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Mar 23, 1984 - instructions for carrying-out the field operations of MIZEX 84, 15 May to. 30 July, 1983. The Plan ...... Secure drift station. 1400. He10 arrives from POLARQUEEN. 1500. De loy acoustic ...... H. C. Hoeber. Meteor. Inst. Univ. ..... recording fathometer (echo sounder) is operated and that the record is adequately ...
MIZEX Marginal Ice Zone Experiment

Operations Manual 1984 Greenland Sea Experiment

MIZEX Project Office March 1984

MIZEX 1984 FRAM STRAI'r- GREENLAND SEA

EXPERIMENT

OPERATIONS ;PLAN

Compiled and edited by the MIZEX Executive Committee, MIZEX Science Group, Platform Chie.f Scientists, Principal Investigators, and MIZEX Project Pffice Staff

PART I

BLANK

CON TEN T S

Foreword Page Record List of Figures List of Tables List of Forms Subject Index to Figures, Tables and Forms

i11 v

vii ix ix x

PART I Operating Schedule 1. Summary 2. Key Dates 3. Rescheduling Procedure

1 1

II.

Program Integrated Plan Schedule

4

III.

Overview: Interplatform Operating Plans 1. Ice-Ocean-Met Arrays 2. Moored Current Meters 3. CTD Surveys 4. Meteorology 5. Remote Sensing 6. Acoustics 7. Biology 8. Bathymetry 9. Weather Forecasting 10. Ice Monitoring and Forecasting 11. Inter-Calibration plan (MET, CTD, etc.) 12. Post-MIZEX Fram Strait Operations, Fall 1984

88 101 108 108 109 109 111 111 113

IV.

Operating Plan: Ships and Aircraft 1. USNS LYNCH 2. MV POLARQUEEN 3. MV KVITBJORN 4. FS POLARSTERN 5. FS VALDIVIA 6. MS HAKON MOSBY 7. HU SVERDRUP 8. Helicopter Schedules 9. Aircraft Operations

117 117 125 128 136 137 139 140 141 145

V.

Communication Plan

158

VI.

Organization

173

I.

2

3

67 67 72

74

i

MAR 23 1984

PART II

VIII. Data Management Plan

201

IX.

Measurement Plan

207

X.

Personnel Assignments

231

Logistics Shipmen): of Equipment Ma:l.1 and Emergency Telephone Number.s 3. Medical/Health 4. Firearms 5. Explosives 6. Ship Etiquette 7. Ships Jnformstion .8 . Transportation/Hotel 9. Personnel Rotation Through Longyearbyen Attachment 1: Recommended Personal Equipment List Attachment 2: Sample, US Shipper's Export Declaration Attachment 3: Shipping Instructions forPOLARSTERN Participants

237 237 239

XI.

1. 2.

XII.

Personnel List and Next of Kin

240 240 240 240 241 248 249·

250 252 253 .258

XIII. Distribution List

281

11

MAR 23 1984

MIZEX Marginal Ice Zone Experiment

FOREWORD

This operations Plan provides the specific information, procedures, and instructions for carrying-out the field operations of MIZEX 84, 15 May to 30 July, 1983. The Plan integrates the project and program activities of all participating personnel, platforms and supporting elements ashore. The plan incorporates and builds on the experience gained in MIZEX 83. It omits repeating the background information and scientific objectives for MIZEX because these are fully presented .in the MIZEX Science Plan, published as CRREL Special Report 83-12 in May 1983 and distributed to the MIZEX list. (Copies available on request to \"1m . D. Hibler III at CRREL or D.A. Horn at MIZEX Project Office) . This MIZEX 84 Operational Plan is presented in this looseleaf format, suitable for binding in a ring notebook. This format will expedite the early promulgation of complete sections of the Plan and facilitate necessary future revisions and corrections. A Page Record will be issued with each mailing to permit recipients to verify that all, up-to-date pages have been received. Request for missing or updated pages should be sent to the 11IZEX Project Office, ONR Arlington, VA.

ttJLv.-1~h(cv, t~

Ola M. ;o~annessen Chairman MIZEX Science Group

MIZEX Executive Officer

iii

MAR 23 1984

iv

MAR 2 "3 1984

PAGE RECORD

Date .Issued

Page Numbers

23 narch 1984

i to ·xvi

Part I: Part II:

1 to 174

23 March :1984

201 .to

.23 March 1984

v

MAR 2 3 1984

Date Issued

MAR 231'::54

List of Figures Figure No.

Title

Page

II-I

MIZEX 84 Ship Program Overview

III-l 1II-2 1II-3 1II-4 III-5 1II-6 1II-7 1II-8 III-9 I II-I 0

ARGOS Buoy Array Meso and Small Scale Buoy Arrays Current ~Ieter Moorings Large Scale CTD Program Synoptic Scale Survey, CTD Grid Synoptic Scale Survey, Survey Pattern . Mesoscale Survey, Grid and Example Upwelling Survey POLARQUEEN · Helo Surveys Synoptic Meteorological Survey, Ship Deployment Concept Meteorological Flight Pattern A.l Meteorological Flight Pattern A.2 Meteorological Flight Pattern B.l Meteorological Flight Pattern B.2 NOAA P-3 Flight Pattern for Wind Parallel to Ice Edge Remote Sensing Program Summary Coincident Coverage: 15-24 June Coincident Coverage: 15 June - 7 July Coincident Coverage:. 8-10 July Laser Profilometer Flight Lines in Support of Meteorological Program Laser Profilometer Flight Lines in Support of Acoustics Proposed MIZLANT Cruise Track

III-11 III-12 III-13 III-14 III-IS I II-I 6 II 1-17 I II-I 8 III-19 1II-20 III-21 1II-22 IV-l IV-2 IV-3 IV-4 IV-5 IV-6 IV-7 IV-8 IV-9 IV-lO IV-11 IV-12

USNS LYNCH - mZEX - Leg 1 USNS LYNCH - MIZEX - Leg 2 USNS LYNCH - CTD Pattern Small Scale Array Around POLARQUEEN KVITBJORN Deployment Schematic Ice Drift Phase MET Installation on KVITBJORN Flight Information Matrix CV-580 Flight Patterns Flight Pattern for French B-17 Example Flight Pattern for NRL P-3 PMI NASA/CV-990 1984 Flight Patterns and Schedule Corner Reflector Deployment Geometries

5

68 71

73 75 77

78 80 81 82 92 94 95 95 96

97 102 103 104 105 106 107 115 118 121 123 127 129 134 151 152 153 154 155 157

vii

MAR 23 1984

.Listof 'Figures (cout.) F;l.gure No.

Title

Page

V..,l

Rad;l.ofreCJuenc:,ySpectrum Useage

170

VI~l

MIZEX84:Field Organization

174

xt....1

:POtARQUEEN :Lab .Al1ocat;i.on Va.n Arrangementll POLARQUEEN KVITBJORN tab Al:ea

242 2{f,3 245

XI-'2

Xl-3

·v iii

MAR231984

List of Tables

Table No. II-l

II-2 III-l

III-2 III-3

III-4 III-5

III-6 IV-l IV-2 IV-3

IV-4 IV-5

V-l

V-2 V-3

V-4 V-5

V-6 " V-7 V-8

Page

Title Remote Sensing Schedule: Tentative Flight Dates Program Integrated Ship Schedule

6 7

Buoy Measurements Current Meter Moorings in Fram Strait Summary of Meteorological Measurements Radiosonde/Tethersonde Ascent Schedule Automatic Meteorological Surface Stations Non-Interference Ship Intercomparison Periods

69 72 88 91 100 112

POLARSTERN Helicopter Schedule POLARQUEEN Helicopter Schedule KVITBJORN Helicopter Schedule Remote sensing Aircraft and Instrument Ensembles Helicopter and Surface-Based Remote Sensing Instruments

141 142 143

Communication Equipm"ent Available Communication Links Call Letters Ship Communication Procedures Communication Schedule Radio, Telex and Telephone Distribution List for Weekly SITREP Acoustic and Radio Frequency Spectrum Useage

158 159 159 160 161 168 169 170

148 149

List of Forms Form No. V-l

V-2 V-3

Page

Title 0500 Standard Report 1900 Daily Situation TELEX Report Aircraft Overflight Information

ix

163 165 166

MAR 231984

Subject Index to Figures, Tables and Forms The following Subject Index and the Table of Contents (pp i and H) are the principal means to finding specific and key information in this OP Plan. Figure (F), Table (T) or Form (R) Number

Subject

Page

Acoustic Array Frequency Spectrum

Sect. III.6 F 1V-5 T V-8

108 129 170

Aircraft Operations Call Letters Coincident Coverage (see Flight Patterns) Communications (see Communications) Flight Dates Flight Information Matrix Flight Patterns (see Flight Patterns) Overflight Information Radiosonde/Tethersonde Ascent Schedule Remote Sensing Program Summary

Sect. IV-9 T V-3

145 159

T II-1 F 1V-7

6 151

R V-3 T III-4 F II1-16

166 91 102

ARGOS Buoy Array

F III-l

68

Arrays, Buoy and Instrumentation Acoustic, KVITBJORN Deployment Automatic Met Stations Corner Reflectors Current Meter Moorings Current Meter Moorings Drift Program Measurements, Ice-Ocean-Met Meso and Small Scale Meterological Survey, Ship Deployment Small Scale Array, POLARQUEEN

F T F F T F T F F F

IV-5 III-5 IV-12 II1-3 III-2 II1-2 III-l III-2 III-lO IV-4

129 100 157 73 72 71

69 71

92 127

Buoys (see Arrays) T V-3

Call Letters, Ships and Aircraft

x

159

MAR 2 3 198~

Figure (F), Table (T) or Form (R) Number

Subject

Page

Communications Acoustic Frequency Spectrum Aircraft Overflight Information Call Letters Equipment Links Procedures Report Forms - 0500 Standard Report Forms - 1900 Daily Radio frequency Spectrum Radio, Telephone, TELEX Schedule

Sect. V T V-8 R V-3 T V-3 T V-I T V-2 T V-4 R V-I R V-2 F V-I T V-6 T V-5

158 170 166 159 158 159 160 163 165 170 168 161

CTD Grids Eddy Surveys Helo Survey Large Scale Survey LYNCH CTD Pattern Mesoscale Survey Synoptic Scale Survey, Grid Synoptic Scale Survey, Pattern Upwelling Survey

F F F F F F F F

80 82 75 123 80

Current Heters (also see Arrays) Hoorings in Fram Strait Hoorings

T 1II-2 F III-3

73

Drift Program

F III-2

71

Field Organization

F VI-l

174

Flight Dates

T II-I

6

III-7 III-9 III-4 IV-3 1II-7 III-5 1II-6 1II-8

77

78 81

72

xi

MAR 23 1984

Figure (F), Table (T) or Form (R) Number

Subject Flight Patterns Coincident Coverage CV 580 French B-17 Laser Profi1ometer Meteorological Flights NASA CV 990 NOAA P-3 NRLP-3

F F F F F F

F F

III-17,18,19 IV-8 IV-9 III-20,21 111-11,12,13,14 IV-ll III-15 IV-10

103-105 152

153 105-106 94-96 155 97 154

Frequency Spectrums (see communications) HAKON MOSBY

Sect. IV.6

139

Helicopter Schedules KVITBJORN POLARQUEEN POLARSTERN

Sect. IV.8 IV-3 F IV-2 F IV-1

141 143 142 141

Inter-calibration Plan Ship Intercomparison Periods

Sect. III.11 T 1II-6

.111 112

KVITBJORN

Sect. IV.3

128

La b Area, KVITBJORN Lab Allocation, POLARQUEEN

F XI-3 F XI-1

245 245

Large Scale CTD Program

F 1II-4

74

Logistics

Sect. XI

237

LYNCH

Sect. IV.1

117

Mesoscale Survey, Grid and Example

F 1II-7

F

80

xii

MAR 23 1984

Figure (F), Table (T) or Form (R) Number

Subject

Page

Meteorological Automatic Surface Stations Flight Patterns (see Flight Patterns) KVITBJORN Installation Laser Profilometer Flight Measurement Summary Radiosonde/Tethersonde Accents Synoptic Survey, Ship Deployment

T 1II-5

100

F F T T F

134 106 88 91 92

Overviews Acoustics Bathymetry Biology CTD Surveys Ice Monitoring and Forecasting Ice-Ocean-Met Arrays Inter Calibration Plan Meteorology Moored Current Meters Post-MIZEX Fram St. Operations Remote Sensing Remote Sensing, Program Summary Remote Sensing, Flight Dates Ship Program Heather Forecasting

Sect. III Sect. II!. 6 Sect. III.8 Sect. II!. 7 Sect. III. 3 Sect. II!. 10 Sect. II!. 1 Sect. II!. 11 Sect. III. 4 Sect. III.2 Sect. III.12 Sect. II!.5 F III-16 T II-I F II-I Sect. II!.9

67 108 109 108 74 III 67 III 88 72 113 101 102 6

POLARQUEEN

Sect. IV.2

125

POLARSTERN

Sect. IV.4

136

IV-6 1II-20 1II-3 III-4 III-lO

5

109

Radiosonde (see Meteorological)

xiii

MAR 23 1984

Figure (F), Table (T) or Form (R) Number

Subject Remote Sensing Aircraft Instrumentation Corner Reflectors Flight Dates Flight Information Matrix Flight Patterns (see Flight Patterns) He10 and Surface-Based Instr. Overflight Information Program Summary Reports Aircraft Information Matrix Daily Situation TELEX, 1900 Overflight InformationStandard 0500 Weekly SITREP Distr. -

Sect. III.5 T IV-4 F IV-12 T II-1 F IV-7

101 148157 6 151

T IV-s

149 166 106

R V-3

F III-16

F IV-7 R V-2 R V-3 R V-1

T V-7

Schedules Communication Helicopter Program Integrated Ship Radiosonde/Tethersonde Accent Remote Sensing, Flight Dates Remote Sensing Program Summary Ship Program Overview

T V-S T IV-1,2,3 T-II-2 T III-4 T II-l F III-16 F II-1

.surveys Eddy Helo, POLARQUEEN Large Scale, CTD Program LYNCH CTD Pattern Mesoscale, Grid and Example Synoptic Met, Ship Deployment Synoptic Scale, CTD Grid Synoptic Scale, Pattern Upwelling

F F F F F F F F F

xiv

Page

III-7 III-9 III-4 IV-3 III-7 III-10 III-5 III-6 III-8

lsi 165 166 i63 169

161 141-143 7 91 6 102 5

80 82 75 123 80 92 77

78 81

MAR 23 1984

Subject ·SVERDRUP

'Figure (F)., Table (T) Form (R) Number .

.01:

. Page

-Sect. IV-.7

.140

VALDIVIA

Sect. IV,...!;

137

Van Arrangements, POLARQUEEN

P·XI-2

.243

Telephone (see Communicatio~s) TELEX (see communications) Tethersonde (see Meteo·rplogical) ·Upwelling (see S·urveys)

MAR 23 1984

MAR 2:3 198L

I. 1.

OPERATING SCHEDULE SUMMARY

Summary

The schedule of the MIZEX 84 Operations Plan is presented in the MIZEX Program Integrated Plan Schedule: Figure II-I and Tables II-I and II-2. Certain dates, times, and events (clearly identified by an asterisk in the Key Date Summary below) will control this Operations Plan and must, therefore, be met. Other than these control dates, times, and events, the balance of the schedule and plan must be flexible and readily adaptable to the vagaries of weather, equipment and operating conditions. Throughout the operations, reschedule actions will be taken as the result of regular onboard meetings held by each platform Chief Scientist and will be coordinated overall by the MIZEX Field Coordinator. When required, field decisions will be the final responsibility of the MIZEX Field Coordinator. The research platforms for MIZEX 84 will be the ice-strengthened Norwegian ships POLARQUEEN and KVITBJORN, chartered by the Polar Science Center, University of Washington, the Federal Republic of Germany icebreaker research ship POLARSTERN of the Alfred Wegener Institute of Polar Research, Bremerhaven; the research ship VALDIVIA, of the University of Hamburg; the research ship HAKON MOSBY of the University of Bergen; the research ship SVERDRUP of the Norwegian Defense Research Establishment; and the NAVOCEANO research ship LYNCH assigned to the US Naval Research Laboratory . POLARQUEEN and POLARSTERN will each carry two helicopters to support instrumentation deployment and recovery and to assist in research operations. Aircraft conducting remote sensing experiments are expected to include the Canadian CV 580 with SAR; a French B-17 with SLAR and photography; Danish C 130 wHh SLAR and passive microwave systems; NOAA's P-3 with SLAR, laser profilometer and meteorological systems; NASA's CV 990 and NRL's P-3 with passive microwave systems. In addition the German DFVLR Falcon 20 and the ARA Beech Baron, meteorological aircraft will make MET research and photographic flights as often as conditions permit. Finally, a Norwegian P-3 will supplement the extensive ship-based CTD surveys with several coordinated AXBT drops. Throughout the aircraft operations, ground truth reference data will be acquired by the ship and ice-based MIZEX research teams. Two special conditions of this schedule should be noted. First, all times are GMT and all platforms (ships and aircraft) will operate on GMT throughout the field operations. The scheduled times in Table 11-2 are approximate except for those control dates and times marked by an asterisk on the following Key Date Summary. Second, due to limitations of berths on several ships and in order to accommodate the number of field personnel required for the scheduled experiments, MIZEX personnel exchanges by helicopter from Svalbard have been scheduled. These exchanges have been timed to correspond to the regular SAS flight schedule between Tromso and Svalbard thereby minimizing waiting time in Svalbard (See Logistics, Section XI). Individuals are responsible for meeting the schedule and for the transport of any material or equipment they plan to bring. 1

MAR 23 1984

2.

Ke::t: Date Summar:/:

Date

~

May 8-9 May 14-16 May 16

0700 0600 1100

May May May May May l1ay Hay

0800 0500 0600 0800 0800 0600 0600 1800 0800

18 21 24 27 28 29 30

May 31 Jun 1 Jun 2

Jun 3 Jun 5 Jun 6 Jun 8 Jun 10 Jun 11-12 Jun 12 Jun 14 Jun 15 Jun 18 Jun 2l Jun 22 Jun 23 Jun 26 Jun 27 Jun 29 Jul 3 Jul 2 Jul14 Jul 15 Jul16

1400 0600 1100 1600 2200 0600 0800 0800 2000 1200 0000 0800 1000 1000 0000 2200 1200 0000 0900 1200 1200 1800 1400 2400 0800 0800 1400 0000 0000 1800

Event

* * * * * * * *

* * * * * *

* * * * *

* *

Load POLARSTERN, Bremerhaven Load LYNCH Tromso Field Coordinator designate approximate location for drift station LYNCH sails Tromso LYNCH arrives OP Area Load SVERDRUP, Horten SVERDRUP sails Horten LYNCH departs OP Area Load POLARQUEEN, Bergen Load KVITBJORN, Tromso POLARQUEEN sails Bergen LYNCH arrives Tromso, exchange personnel and equipment as required SVERDRUP arrives Tromso POLARQUEEN arrives Tromso, load Helos Field Coordinator - Chief Scientists meeting on board POLARQUEEN (see Note below) KVITBJORN sails Tromso POLARQUEEN sails Tromso SVERDRUP sails Tromso POLARQUEEN arrives Ice Edge LYNCH sails Tromso SVERDRUP arrives OP Area KVITBJORN on Station LYNCH arrives OP Area POLARQUEEN on Station POLARSTERN arrives Tromso Load POLARSTERN, Tromso HAKON MOSBY sails Bergen POLARSTERN sails Tromso HAKON MOSBY arrives Tromso HAKON MOSBY sails Tromso VALDIVIA sails Hamburg POLARSTERN starts current meter deployment POLARSTERN and HAKON MOSBY on Station VALDIVIA arrives OP Area LYNCH departs OP Area SVERDRUP departs OP Area SVERDRUP arrives Tromso SVERDRUP sails Tromso Window for personnel exchange by helo SVERDRUP ard.ves Horten VALDIVIA departs OP Area HAKON MOSBY departs OP Area HAKON MOSBY arrives Longyearbyen 2

MAR 23 1984

2.

Key Date Summary

(cont'd)

Date

GMT

Event

Jul 18 Jul19

0000 1200 1200 1200 1000 0600 1200 1200 1800 0600

POLARSTERN departs OP Area POLARSTERN arrives Longyearbyen VALDIVIA arrives Longyearbyen POLARQUEEN departs OP Area POLARQUEEN arrives Tromso, off load Helos POLARQUEEN sails Tromso KVITBJORN departs OP area KVITBJORN arrives Tromso, off load ship POLARQUEEN arrives Bergen, off load ship MIZEX 84 Operations completed

Ju12l Jul 23 Jul 24 Jul 27 Jul 29 Note:

3.

*

The Greenland Ice Patrol is expected to make a reconnaissance flight in late May over the MIZEX 84 Operations Area to provide data on current ice conditions.

Rescheduling Procedure

The Program Integrated Ship Plan Schedule (Table II-2) and the MIZEX 84 Aircraft Schedule (Table II-I) of this Operations Plan are recognized as flexible, EXCEPT for those cardinal dates, times and events clearly identified in the Key Date Summary. The intent of the schedules is to organize and facilitate the planning process, to provide a means for clear, rapid communication, and to aid and expedite the rescheduling of events that will inevitably occur during the 11IZEX 84 Field Operations. Every operating day. as required, each platform Chief Scientist will hold and scheduling meeting with the PI's onboard. This meeting should require about 30 minutes to one hour and should be the basis of each Chief Scientist's daily status and schedule plans report to the Field, Coordinator. See Communications Plan, Section IV for details and procedures. ~o..p-erations

During daily operations, changes or variations can and probably will occur. Every action taken or change made should be annotated by the cognizant individual and reported at their Chief Scientist's meeting. Changes impacting other researchers and ship operations must be relayed as soon as possible . to those affected and to the cognizant Chief Scientist for approval and/or relay to the Field Coordinator as necessary. All major actions taken or variations occurring will be reported to the Field Coordinator daily. The final authority and responsibility for operational and scheduling actions and for the resolution of any conflicts rests with the Chief Scientist on each platform and with the MIZEX Field Coordinator overall. Each project PI or research leader is expected to recognize and accept this and to conduct his/her research operations accordingly.

3

MAR 23

i::;O'l

.il.

PRO.GRAM ):NTECmATE}) PLAN SCHEDULE

4

MAR 23 "1884

MAY

USNS LYN CH

M/V POLARQUEEN"

"

F/S "POLAR STERN" o

MIS "H AKON MO S BY

lJ>

F/S VALDIVIA" 'I

2

.1:~1~1:~1~1 ~:~~o:er: I

Instrumenl

~

l>

::0 (\)

CN

(0

co

.f-:.

IACOUSliCS

,I,

,

I'

5

8

10 12

14 I 16

JULY

I

I

WindawllwindOW for 5 days far pers synoptic HET. progr.

I

Exch.

I ~

C.T'D/BiOI'IHET.~coord . cynopl,c Seclions ICE drill progr.

C.T. D.

~

I

coord

large scale Dcea nogr.

Mesoscale Dceanogr.

Fig. ]I-1 (Eddies ) Fronls Upwelling

MIZEX-84 OVERVI EW

SHIP

PROGRAM

TABLE II-l REMOTE SENS1NG SCHEDULE: cv-sao

DATE

Sio!'Jl

Jun 1

2 3 4

5 6 7

2£L.

OANISH C-130

1I0RWEG1AN ~

C'l - 990

NOAA

NRL

~

~-J

TE~TAT[VE

FRENCH SLAR

,L;GnT

GEP.I'AN ,ALCON

~ATES

riE!"OSC~L

::~ASME

?~

"-:ELJ

'1.1070 -- E!..,)

T 1

1 FH

a

9 10 II 12 13 14 15 16 17 18 19 20 21 22 23 24 2S 26 27 28 29 30 .luI I 2 3

X(A) X(A) X(A)

•5 :(.

6 7

x

a

9 10 II

12 13

14 IS 16 17 la

19 20 21 22 23 24 25 26 27 28 29 30 11

6.

MAR 23 198,

TABLE II-2 Table II-2 consists of pages 7 to 66 incl. which are intended to be taped together to form the Program Integrated Schedule. USNS LYNCH DATES Hour Event JULIAN CALENDAR GMT 134 S MAY 13 Note: LYNCH in Glasgow for up keep period Some items may be loaded on 4-7 May. See Logistics Plan 135

M

14

0600

136

T

15

All day

Load ship install equipment (See Logistics Plan)

137

w

16

All day

Complete ship loading Field Coord/Chief Sci. Select OP Area

HOO

Arrive Tromso, Commence loading ship

138

T

17

All day

Nowegian Constitution Day - Holiday

139

F

18

0800

140

S

19

141

S

20

142

M

21

0500 PH

Arrive OP Area, site survey & deploy WHO! source Recover 1983 m, current meter. Deploy C-M FS-7 Transit to UW current meter FS-8 site.

143

T

22

AM

144

w

23

AM

Deploy UW current meter FS-8. Transit to and recover 1983 LDGO current meter. Transit to ice-edge near 78 0 30' N and deploy LDGO current meter triangle. Continue deploying LDGO C-M' s

145

T

24

AM

Transit to CTD, 79 0 50'N and the ice-edge. Begin CTD work.

146

F

25

PM

Finish transect. Begin deployment of UW curren] meters.

147

S

26

AM

Deploy ARGOS bouys along northern ice-edge.

Sail Tromso, enroute OP Area

Enroute OP Area

!

1

remain~ng

7

MAR 23 1984

:8

. MAR 2319

USNS LYNCH DATES JULIAN CALENDAR 148 S MAY 27

Hour All day

149

M

28

150

T

29

151

w

30

152

T

31

0800

153

F JUN

1

All day

154

S

2

0800

S

Repeat CTD transect as time permits

'01""

OP A,oa, on,"o'o ,,""'"

Enroute Tromso

j AM

1100

155

Event

GMT

Arrive Tromso, personnel and equipment changes as required Continue loading

Intercalibrate Met equip. w/PQ and KB Field Coord/Ch.Sci. meeting on POLARQUEEN

I

At Tromso

3

I

156

M

4

157

T

5

158

I.

6

159

T

7

160

F

8

0000 All day

Arrive OP Area CTD Transect, Radiosondes, Cavitation and Bioluminesence

161

s

9

All day

HLF

0800

'Y

Sail Tromso, enroute OP Area Begin Radiosonde release per schedule

I

Enroute OP Area

XSSP, Radiosondes

MAR 23 1984

.10

·M' AR1."-'..:; ? ,., I

f.i'O,1 .I~

USNS LYNCH DATES JULIAN CALENDAR:162 S JUN 10

All- day HLF Tow, XBT, XSSP, Radiosondes

163

M

11

All day

164

T

12

All day

165

W

13

All day

166

T

14

All day

167

F

15

All day

168

S

16

All day

169

S

17

All day

170

H

18

All day

171

T

19

0000

Hour

Event

GMT

I

I I

t

Cease HLF-3 tow near WHO! source site; locate and recover WHO! source Begin synoptic CTD, cavitation and bioluminescent work

1200 172

W

20

All day

173

T

21

All day

174

F

22

1200

I

Redeploy and tow HLF-3 source Depart OP Area enroute Reykjavik, Begin regular XBT and XSVP measurememts

I

175

S

23

All dayl 11

MAR 231984

12

MAR .23 1984

USNS LYNCH DATES JULIAN CALENDAR

176

S JUN 24 ·

177

M

25

178

T

26

179

W

27

180

T

28

181

F

29

182

S

30

183

S JUL

1

184

M

2

185

T

3

186

I~

4

187

T

5

188

F

6

189

s

7

Hour

Event

GMT

AM

Recover HLF-3 source

Enrl"o Royk,.vik

1200

Arrive Reykjavik

13

14

MAR 2.3 1984

HV POLARQUEEN Hour DATES GHT JULIAN CALENDAR 148 S HAY 27

Event

149

H

28

150

T

29

0600

Load Bergen (see Logistics Plan)

151

\~

30

1800

Sail Bergen, enroute Tromso

152

T

31

I

Enroute Tromso 1

i

153

F

JUN

I I

1

I I

154

S

2

0600 1100 2200

A~rive Tromso, Load He10s Field Coor/Ch.Sci. Meeting on POLARQUEEN Sail Tromso

I

Enroute Ice Edge

155

S

3

156

M

4

157

T

5

0800 1300

158

IV

6

All day

'1raY d'p10,.,.
30 Kt-! -HaPO

~ 0\

t1

~62(301

xA31S0)

(l)

xT3120J

CO H H H

1rTl (15)

X A212[])

....I

LEGEND

:z

0"

ro

xHIIIO) ~T2(S)

XAI (5)

A CANADIAN H B NORWEGIAN I NORWEGIAN I'fOROIDS) II GERMAN G GERMAN toCEflN DR WIERS) f fRENCH o fRENCH (OCEAN DRIfTERS) '" RflDAR REfLECTORS

xBI (51

,,'-------

,-----------------------------------,

,:' b,1,' {it'

:

10 SURfACE DRIfTERS

:

:_______ ..o!~~~,_ .__ ~ ~~~ ________________ J

"

ty/

SURfACE DRIfTERS (W. SPITS.) GI , G2, . ,GB ~

",' ,

,, ,,

, ~

l>

o

5W

LONGITUDE

:::0 ~

CN

(t"1

t."()

.. Buog" A7, A8, .

.. All Lo be depLag~d aL s~Le.

AI, A2, .

AS one ~onLh Laler from PoLor6lern

81W

Table III-1

----------------------------------------------------------------------------------------BUOY MEASUREMENTS Inst.

No.

Type

Measured parameters

3 Hermes 2 Hermes 1 Hermes

BIO *

position position,wind v position

Location

Approx. Approx. Deploy. Recov.

Al,A3,A6 A2,A4 AS

157 157

201 201

Plat.

D

PQ PQ air

U of Bergen

3 4 1

toroids posit.,met/oceanog. ICEX capsule position ICEX capsule position,pressure, oceanographic

T1,T2,T3 B1,B2,B3,B5 B4

158 158 158

201 201 201

PQ PQ PQ

Mus. Nat'l d'Hist. Nat.

3 1

spheres spheres

C2,C3,F1** F2***

159 182

201 201

PQ PQ

AWl

3

BAHlS

position position position,met

H1,H2,H3

PS

Mus. Nat'l 10 d'Hist. Nat. 12

surface drifters SOFAR floats

position

D1,D2, •• D10

position

Sl to S12***

170

U of Hamburg

8

surface drifters

position

G1,G2, ••• G8

172

D

U of Miami

3

cyc1esondes

C2,C3,T3

160

201

PQ

CRREL

6 Del Norte

C2,C3,T3,N1,N2,N3 .160

201

PQ

U of Hash.

5

acce1erometer

201

PQ

SPRI

4

transponders

USGS

3 ablation guages

A\H

5

transponders

ERIM

5

radar reflectors

oceanographic position acceleration

C2,C3; T3, W2, lY3

position bottom ice ab1ation,waves position

D

160

PQ(3), L(3)HM(4: PS V

lY1,lY2,W3,W4

PQ

W2,W3,T2

PQ

Il, .. I5

PS

B2,F1,B5,Tl,T2

PQ

* ARGOS drifters A7,A8, ••• Al1 (not shown) to be deployed later (177-182) from POLARSTEID in geographic positions Al,A2, ••• A5. ** F1 and F2 are Autonomous listening stations (Gascard) ***

Not shown on Figure 111-1 69

MAR 23 1984

c.

Meso and Small Scale Arrays

In addition to the ARGOS buoy array (Figure 111-1), meso and small scale instrumentation arrays will be deployed in the vicinity of the drifting ships and close to the ice edge (see Figure 111-2). Surrounding POLARQUEEN will be an array of 5-6 Del Norte transponders which will be tracked by radar from the ship to obtain detailed information ice deformation and rotation. An ice deformation and rotation data set will also be obtained from the acoustic array adjacent to KVITBJORN (see Section IV.3 and Figure IV-5). At three sites (C2, C3, T3) cyc1esondes and accelerometers will also be set out. ARGOS drifters will be placed at locations C2 and C3 to provide backup position data. The drifting station array and the Bergen Toroid array will be tied together by common positioning at T3. Each Bergen Toroid will be equipped with a string of 6 current meters. In ' addition C2 and C3 will each be equipped with 2 Aanderra current meters. Ice motions near the ice edge will be intensively monitored at' sites W1-W4 during three 4-day "minidrifts". Transponders for the first two minidrifts will be set out by POLARSTERN; helicopters from POLARQUEEN will deploy the array for the 3rd mini drift and recover transponders from the 2nd and 3rd minidrifts. Sites H2 and W3 . will also have accelerometers, automatic ice ablation buoys, and current meters. Five additional transponders will also be set out during each of the minidrifts at sites II-IS to determine ice movement along the extreme ice edge. Three Bergen thermistor chains, each with current meters, will be deployed on one pack ice floe at least 1 km diameter and as close to KVITBJORN as possible. The array will form a triangle approximately 1 km on each leg. In addition, a Bergen current meter rig will be deployed adjacent to KVITBJORN (see Figure 111-2).

70

-
Figure III-4

75.

MAR 2 3 !::a:A

b.

Synoptic Scale Survey

Synoptic scale CTD surveys will be carried out in boxes (110 x 120 km) twice during MIZEX, near 80 0 30'N and n 0 30'N, depending on the position of POLARQUEEN. This should enable us to estimate the hydrographic background (horizontal density distributions) for the investigation of mesoscale features. Sampling depths are 50 Om and l500m. The ideal CTD grid reaching 45 km into the ice and 65 km into the open water is displayed in Figure 111-5. The MIZEX Field Coordinator will designate the four corners of the grid. The idea is to cover every station twice during a survey, with the two platforms working in the opposite direction. This will enable us to estimate the effects of advection of features in the mean current. Due to time' constraints (total time available, other measurements) not all .of the stations can be occupied during such a survey. So, in some cases only every other section can be done. Figure 111-6 is a schematic of the ship and helo tracks during the two synoptic surveys. The grid should be located in such a way that POLARQUEEN is positioned in the northern part' of the atray. Drifting southwards, she can then give full helicopter support to the CTD measurements. In addition be carried out MOSBY possibly decided upon in

to these over the supported the field

combined efforts another synoptic scale survey will Molloy deep (79 0 10 'N) during 25-30 June by HAKON by Helos from POLARQUEEN. The CTD grid will be as it iS , strongly dependent on local ice conditions.

Additional Measurements on Synoptic Surveys POLARSTERN VALDIVIA HAKON MOSBY LYNCH c.

Biology, Chemistry Biology, Chemistry, CODAR, Waves Whitecaps, Meteorology None

Mesoscale Surveys

l1esoscale surveys, covering an area of up to 40 x 40 km, are intended to map meanders of eddies at the ice edge and within the ice very rapidly. The high variability of these features makes it necessary to carry out a mapping within 24 hours or possibly less. As the exact grid design depends heavily on ' ocal ice conditions, we can only give guidelines for the design of such a 'id which can be applied in the field. The measurement depth should not be ~s than 300m in order to reach into the Atlantic water.

76

MAR 23 198,

(1.)

Ice Edge Eddies: The following steps should be followed: get information on eddy - from remote sensing - from synoptic scale survey run a quick helo-survey of the ice edge, give positions to main ii. survey ship iii. estimate center and lateral extend of eddy feature apply appropriate grid consisting of about 45 stations to the iv. feature so that it is fully covered. The grid has to be scaled up or down to give at least a - 10 stations on a cross section v. define areas to be surveyed by helos, ship 1, ship 2 etc. align grid stations on sections for single platform survey areas vi. vii. give positions to helos viii. start work

1.

The grid itself is ShOlffi in Figure 1II-7a. It would be useful to prepare overlays at different scales in order to match the size of the feature. An example of station distribution using one helo and tIm open l,ater ships is given in Figure 1II-7b.

(2.)

Upwelling

The upwelling CTD grid is similar to the synoptic survey grid, just on a smaller scale. Sections perpendicular· to the ice should reach about 40 km off the ice edge with 2 - 5 km station spacing. Sections should be shifted in the along ice direction at a distance determined by the mean advection. One section, consisting of 15 stations, can be occupied within ;1.2 hours, i.e. within one inertial period. With a mean advection of 20 cm/s sections should be spaced at a distance of a - 10 km. Mirror image helicopter CTD work would be a useful component of this ..ork. A second ship (VALDIVIA) will estimate surface current divergence by CODAR and add CTD stations near the ice edge. A possible configuration for a l2hour survey is given in Figure III-a, using HAKON MOSBY, VALDIVIA and one helo. (3.)

Mesoscale Features under the Ice Using POLARQUEEN's Helos

Since the POLARQUEEN will be drifting with the ice field, a majority of the helicopter CTn surveys will be done within the 206B range limitations. The main thrust of observations with the helicopter CTD during the lifetime of the drift phase will be that of continuously mapping the local upper ocean features around the POLARQUEEN (using a simple grid consisting of 9 stations) every two to four days depending upon availability of the helicopters, see Figure 1II-9.

79

MAR 2 3

~geA

MESOSCALE SURVEY a)

45

GRID

STNS



• 2

T-



5 km

%..























b)

EXAMPLE







- 40

km







15



HELD 11 STNS -10h • SHIP 1 18 STNS -12-18h o SHIP 2 18 STNS -iZ-18h

X

Figure III-7 80.

MAR 23

!:

UPWELLING SURVEY" (

~12h)

leE

WATER o o· 0

.X

.X

x

x x x'X xx ••

0

-t.

.• •

0

b

.0 0 0 +

• SHIP 1 (H .M.) ern

TO (VAL. ) ,SHIP 2 ern TO ... SHIP 2 (VAL. ) CODAR .x HELO ern TO 0



10 Ie

0

0

0

0

km.

>I • .

0

.0

0

300 300

m m

300

m

-Figure 1II-8

81.

·MAR23 ,984

The absolute positioning of the stations, as well as repeated grids, will depend upon the position of the ship and the features observed during previous surveys. The total amount of time required to complete a survey will depend upon many factors, however, an average of 10 hours should be sufficient. In time periods when the ship moves very little, stations within subsequent surveys will have the same geographical positions (duplicate survey) thereby gaining information on temporal variability (spatial variability is always observed) over the entire survey area. In most cases, however, it is expected that the ship 1>111 drift otlly enough so that part of the previous grid may be occupied by the current grid (sliding, survey). Here, at least, we do get some information on temporal variations, even though it may be over only a percentage of the previous survey area. During time periods of rapid, drift of the POLARQUEEN, it may be possible only to put in grids that have no overlapping points (independent survey), thereby gaining information strictly on spatial variability with e'ach grid. Over the projected drift pattern of the POLARQUEEN, it is expeCted that "duplicate surveys" will be used during the beginning of the drift phase; the "sliding surveys" used as the ship moves closer to the East Greenland Current, and that the "independent surveys" will be completed when the ship is moving is close association with the East Greenland Current.

POLft,RQUEEN HELO SURVEYS survey ICE

WATER

~O independent





PQ

,.'

qzp



T -10 - 20

survey





km

~

CTD box grid (0 - 500 m)

Figure III-9 82

MAR 23 1984

d.

Routine Hydrographic Observations

In order to b e able to enbed the I1I ZEX observations int o the large scale hydrograph ic and circulation field it would be extremely useful to c ol lect as many environmental oceanographic data as p ossible . Observa t ions o f surfac e temperature and salinity, surface currents (by comparing dead reckoning and satellit e fix positions) a nd vertical profi les of temperature and salinity (XBT, CTD) should be carried out by all participating vessels as frequent l y as possible in the area nor t h of latitu.de 72 0 N. Besides during the NIZEX act ivities itself such data should be collec t ed on transects to and from the operations area and in bet'"een stations. Desired sampl.ing spacing is not more than 10 - 20 km, i.e. hourly during steaming. Such a data set will a ll ow resear chers to dep ict the development of the large scale circulation, provi ded all ships participate tn the clata cO.L1ection. Also it will provide surface data for satellite IR-images. The following pages give da t a logs for these standard observa t ions. Please take sufficient XEROX copies on your cruise a nd fill in the data during the experiment on b oard the ship . Data can be uncalibra te d but should no t be unrealistiC, i.e. tempe rature + 0.1 - 0. 2 o C , salinit y + 0.05 - 0.10 0/00, currents:!: 10 em/so Immed iately after completing the cruise, t he data sheets should be sent to: Dr. Detlef Quadfasel Institut fur Meereskunde del' Universitat Hamburg Heimhuder Strasse 71 D-2000 Hamburg 13 F. R . GERHANY Maps of hori zontal distribut ions of properties in Fram Straits will then be compiled within two or three months and distributed to all HIZEX PI's. Remember: good coverage is only possible if every ship participates . .

83

MAR 23

She.et :No. :.___-

Surface .. Current: D;1te

T,op,g

-S'peed CM/S

84

Dir

.Nprth

East

OT

MAR 231984

Sheet No. ::_ __

Surface Current: Date

Time

Lat

S)1rf • .50 ./00

Long.

GMT

85

MAR 231984

Profil~

data (CTD, XBTl Ships

Date

Time

GMT

00 0\

~

» :::0 N

03

........

sg

Lilt N

Long

Sheet:, Surface

TS

SOm T

15\) m

100 III

9

T'

S

T

,2'00 lIi

S

T

S

'T

No.:~

30\) lit ,9

___ 500 m

T

'9

BLANK

MAR .23 1984 !\7

4.

Meteorology a.

Measurements:

Table 111-3 provides a summary overview of all meteorological measurements by platform and parameter. Table III-3 Summary of Meteorological Measurements Platforms/Parameters SHIPS MEASUREMENT Pressure

POLAR- POLAR STERN QUEEN x

AIRCRAFT

KVITBJORN x

HAKON MOSBY x

VALDIVIA x

LYNCH x

FALCON 2Q x

NOAA* P-3

x

x

100 m . x

100 m x

x

x Gust Probe

x

x

x

x

SFC layer wind, temp, humidity

x

x

x

x

Velocity turbulence

x Sonic

x

Sonic

x Sonic Film

Film

Temperature turbulence

x Sonic

x Sonic

x

x

Sonic Res. wire

Humidity turbulence Downward radiation (short, long) ~

l>

:::0 CV CN

ill 00

~

Reflected radiation (short)

x

x

x

x (net)

x

x

TableIII-3 (cont'd) Summary of Meteorological Measurements Platforms/Parameters SHIPS POLARSTERN

SODAR/ Tethersonde

SODAR SODAR Doppler Doppler

Radiosonde v, T, q

x Vaisala

'"

~

CN

m CO ~

HAKON MOSBY

TETHERSONDE

SODAR Henostat

x Vaisala

x Vaisala

VALDIVIA

LYNCI!

x Vaisala

x Beukers

FALCON 20

Hhitecaps

x

x

x

x

x

x

x

x

NOAA * P-3

Spiral x

* **

~

BJOR.J.~

x

Electric field

» :::0

KVIT-

Aerosol

Surface temperature

CtJ

POLAR QUEEN

MEASUREMENT

AIRCRAFT

Radiom.

x

Tentative ARA Baron can get surface pressure because it flies at 5m altitude

x

Radiom.

b.

The Radiosonde/Tethersonde Program:

Radiosondes with OMEGA windfinding will be launched from the five ships POLARQUEEN, POLARSTERN, VALDIVIA, HAKON MOSBY and LYNCH. The following launching sequences will be chosen depending on platform configuration, aircraft misgion and large scale atmospheric flow conditions: a) Minimal mode: b) Normal mode: c) Accelerated mode: d ) Intensive mode:

2 ascents per day at 4 ascents per day at 8 ascents per day at 1400, 1700, 2000 and every 90 minutes

1100 and 2300 GMT 0500, 1100, 1700 and 2300 GMT 0200, 0500, 0800, 1100, 2300 GMT

The joint program will start as soon as three radiosonde ships have reached the experimental site about 15 June 1984. It will end at 17 July 1984. The launching sequence will be determined by the Chief Scientist on . FS POLARSTERN. Table 111-4 presents the launching schedule for radiosondes and tethersonde. For a 5-day period in the time window between 4 and 17 June 1984, the four radiosonde ships will form two nearly equilateral triangles with a side length of about 150 km. A possible configuration appears in the following Figure 111-10. One triangle will be situated in the pack ice and the second on the open water side of the ice edge • During this entire corephase of the meteorological program the accelerated mode is principally valid for all ships. The intensive mode may be called for in connection with special aircraft missions or ship movements. In contrast to the above mentioned plan, the launching frequency on POLARSTERN will generally not drop below 8 ascents per day (mode c) in order to resolve diurnal variations. To avoid radio signal interference the assigned to the six ships:

< -398 398-400 400-402 403-405 405-407 407-409

following

fequency ranges are

LYNCH POLARSTERN POLARQUEEN KVITBJORN (Tethersonde) HAKON MOSBY VALDIVIA

The data of all radiosonde ascents will be transferred from the Micro Cora cassettes to IBM compatible digital tapes as well as validated by the Alfred Wegener Institute for Polar Research. c.

Satellite:

A primary objective of ·the Meteorological program within MIZEX 84 is to study the internal structure of the atmospheric boundary layer as function of surface roughness and temperature across the Marginal Ice Zone. Completely different cloud regimes might therefore be observed over the ice and water. 90

MAR 23 1981

RADIOSONDE/TETHERSONDE ASCENT SCHEDULE

DAY/SHIPS

Polar Hakon Val- Kvitynch .q.u.epn Mn,;hv clivi" biorn

Polarstern

June --~6~~~+----+----r----r---i----i 7 I"~' 8 9

11

I

12 13

~~

t1inimal mode

"

~

2

17

//ffi /Lj////: V////r-~

~

ASCENTS

~ and ~",-,

no

2300 GHT

24 25

26 27

I

28

5 6

I

11

I ,_ I

Accelerated mode and ascents 0200, 0500, 0800, 1100 , 1400, 2000 and 2300 GHT

12 13 "

15

16 17

23 2' ._ 25-''-__-'-_

r;.::-iV::-/

__

---'-----'---_. -.~

Table 111-4

MAR 23 1984 91.

SYNOPTIC METEOROLOGICAL SURVEY SHIP DEPLOYMENT CONCEPT

Radiosonde c=J Polarstern

/

\

/

\

/

\

/

80 km

\

/

\

/Radiosonde c:J.Polarqueen

\ \

\

\

\ ,

..£ (

I

( I (

ICE

/ '/

II U

/

I

\

ICC

\10 km I / I

I U---.I....c-':-c.t,./-I.I:.o-----I

The direction of the legs will be determind by the mean flOl>'. The legs will be flown along and across the mean wind direction.

I

1-50km/ \

I

\

.... _...

o(Buoy) Figure III-12

The following patterns will be used to study radiation and cloud physics.

B.l: Location depends on cloudiness , an area within ice near POLARSTERN is desirable. HETEOROLOGICAL FLIGHT PATTERN B-1·

30 km I

100 m above MSL - - - - Approx. 150 km -

Figure III-13 95

MAR 231984

B.2:

This pattern will be flown at two levels; one above and one below low level stratus. Length of leg depends on distance from measurement area to Longyearbyen. Position of quadrangle depends on wind direction.

METEOROLOGICAL FLIGHT PATTERN B-2

o

Polarstern

t - - - - 40 km---.-~

r,..

lill be repeated. LYNCH will depart the MIZEX operations area on May 28th at 0800 so that she can arrive back in Tromso early on 11ay 31st. This will complete the first leg of the LYNCH.' s cruise.

b.

Second Leg - 5 June to 28 June 1984

During this leg the LYNCH will operate on a schedule in coordinati'on with the other ships participating in MIZEX. The principal ships with which the LYNCH's activities must be coordinated are the MV KVITBJORN and HU SVERDRUP for which the LYNCH will be towing an acoustic source. She will attempt to adhere to this schedule as closely as possible. See Figure IV-2 and IV-3.

120

USNS LYNCH' - M!ZEX - Leg 2 5-28 June, Tromso to ReykjaviK

I

-----1.. ------ ·. -~;;L-- .. -

\~~)\

, I

I

I

78

:

. :

I

\

:

: •

.-.. - ~' ... -- -:- .... I

\

I

I I

f

!

I I

I I

77

-5

15

o

5

10

Longitude

Ship tracks and locations for the second leg of the USNS LYNCH'.s cruise in HIZEX. Symbols are as follows, A - WHOI acoustic source, V - NUSC array, Xl: - MIT and NRL arrays. Heavy lines indicate possible HLF-3 acoustic source tow tracks. Dotted box indicates a possible synoptic survey region. All locations are representative only and will depend on the actual location of the ice-edge. Figure IV-2 121.

Throughout the second leg LYNCH will be conducting radiosonde and surface meterology measurements. Radiosondes, Beukers Omega Sondes, will be released according to the following schedule, for a total of 60 sondes: Dates

Number/Day

Times

5- 8 June

1

1100

9-15 June

2

1100, 2300

16-24 June

4

0500, 1100, 1700, 2300

25-27 June

2

1100, 2300

In addition, 20-30 Vaisala PTU and 20-30 VIZ Research sondes will be released at nearly the same time as the Beukers in order to compare the different types of sondes. Radiosonde data will be digitally recorded on mixed-media; .after post-experiment processing this data will be available on 9-track tape. Surface observations will be made every three hours with other observations as required. surface observations will include, time, sky, "eather, sea state, sea surface temperature, wind, and pressure. Solar radiation, pyronometer, >Till be recorded on an analog strip chart. Temperature and dew point will be digitally recorded every 10 mins. The LYNCH will sail from Tromso on June 5th at 0800 and should arrive at the CTD transect area at about 0600 on June 8th. She will then repeat some of the previous transect. The total time alotted for this transect is 1 day. During this time she will also perform a cavitation experiment and take biological samples for culturing bioluminescent dinoflagellates. The cavi tation experiment will be lowered over the side while the CTD is in progress, on a not-to-interfere basis. The biological samples loti 11 be acquired during short periods of towing between the CTD stations. The bioluminescent organisms will then be seperated by microscope and cultured. After completing the CTD transect on June 9th the LYNCH will deploy Hydroacoustics' HLF-3 source and tow it along radials and arcs centered on the NUSC array for 2 days. The SVERDRUP will have deployed the NUSC botton array to receive the HLF-3 signal prior to June 9th. The MIT and NRL arrays are ;cheduled to be working by June 11th. The source is to be towed at a depth of gOm at an 8 knot speed. The tracks presented in Figure IV-2, are representative only. Actual tracks will depend on the location of the ice, the KVITBJORN, and the HIT and NRL arrays. Also additional tracks near the ice-edge are not shown. During this to" phase the LYNCH will also drop 800 ft SUS (244m) for the listening arrays and drop expendable sound velocity profilers (XSVP) to determine the sound speed structure. Sixty XSVPs will be deployed during this period. June 19th the LYNCH will recover the HLF-3 source, proceed to the WHOI source site and recover the source deployed in the first leg. She will then participate in the synoptic CTD survey with the other ships of the rUZEX experiment. LYNCH will operate in the vicinity of 80 0 N along the ice edge. An example of this region is provided in Figure IV-2 by the dotted box.

122

MAR 23 1984