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AD-A183 76 NORDIC SEAS SEDIMENTATION DATA FILE VOLUME 2 CURRENT 1/1MEASUREMENTS FROM TH.. (U) MOODS HOLE OCEANOGRAPHICINSTITUTION MA S HONJO ET AL. FED 97 MHOI-87-18

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Joint Program:Woods Hole Oceanographic Institution, USA WHOI-87-18University of Kiel, FRG

NORDIC SEAS SEDIMENTATIONDATA FILE, Vol. 2, 1987

o Current Measurementsfrom the Northern Nordic Seas

1983 -198600

*V

Sponsoredeb

Offic of Nval Rsearc

Arlington. VigiiaUS

-:I AU

. . . . . . . . . .

WHOI-87-18

Current Measurements from the 0Northern Nordic Seas

1983 - 1986

by

Susumu Honjo, Christine M. Wooding, and Gerold Wefer*

Woods Hole Oceanographic InstitutionWoods Hole, Massachusetts 02543

*Institute of Geological SciencesUniversity of Bremen ,-

Bremen, Federal Republic of Germany

February 1987 %A

~.-

Technical Report .

Funding was provided by the Office of Naval Researchunder Grant Number N00014-85-C-0001.

Reproduction in whole or in part is permitted for any purpose of -The United States Government. This report should be cited as:

Woods Hole Oceanog. Inst. Tech. Rept. WHOI-87-18

Approved for publication; distribution unlimited

Approved for Distribution:

,~ eu-

David A. Ross, ChairmanGeology and Geophysics Department

Joint Program:

Woods Hole Oceanographic Institution

andUniversity of Bremen, FRG

NORDIC SEAS SEDIMENTATION

DATA FILE, Vol. 2

.1

CURRENT MEASUREMENTS FROM THE

NORTHERN NORDIC SEAS cc ,.

1983 - 1986

l| ..%mp . :

..

Sponsored byOffice of Naval Research ..............Arlington, Virginia USA

1.. _ C

1

Table of Contents Page

Abstract ........... ............................. . .. 1

Introduction .......... ... ........................... I

Technical Note .......... .......................... . ... 2

Acknowledgments .......... .. ......................... 3

Table 1. Moorings in the Greenland Basin/Norwegian Sea,1983-1986 ......... ....................... ...

Figure 1. Distribution of sediment trap/current meter moorings. 5 ,d

Figure 2. Cruise track of R/V. Polarstern, Bremerhaven, fromTromso to Alesund, Norway, August 8 to 26, 1984 ...... 6 ,'• . , ... .

Current Meter Data: 1983-1984 ......... .................. 7

Current Meter 713, Lofoten Basin ......... ..... . 8Current Meter 1484, Greenland Basin ..... ............ . 14Current Meter 1485, Greenland Basin ......... .... 19Current Meter 2752, Greenland Basin ..... ............ ... 253-D Vector Diagram, Greenland Basin .... ............. ... 31

Current Meter Data: 1984-1985 ......... .................. 33

Current Meter 2814, Fram Strait ..... ............... ... 34

Current Meter Data: 1985-1986 ......... ................. 39

Current Meter 2814, Fram Strait ..... ............... ... 40Current Meter 1484, Greenland Basin .... ............. ... 45Current Meter 1485, Greenland Basin .... ............. ... 49 .Current Meter 2752, Greenland Basin .... ............. ... 55Conductivity measurements ......... .................. 603-D Vector Diagram, Greenland Basin ......... ... . 64

-.. j

"'. % I ,' - .

.. , .. , , . . , . .... . ... ..

Nordic Seas Sedimentation: Data File; Volume 2

Current Measurements from the Northern Nordic Seas,1983 - 1986

by

Susumu Honjo, Christine M. Wooding, and Gerold Wefer* ~. *%.

Woods Hole Oceanographic InstitutionWoods Hole, Massachusetts 02543

*Institute of Geological Sciences

University of BremenBremen, Federal Republic of Germany

April, 1987

Abstract:

Records from ten Aanderaa current meters deployed along with 5current meter/sediment trap mooring arrays in the Fram Strait and p.Greenland Basin, each deployed for approximately one year between 1983and 1986, are presented in this data file., ,ata included are currentvectors, temperatures, frequency spectra, and two- and three-dimensionalvector diagrams.

Introduction

Supported by the United States Office of Naval Research, the WoodsHole Oceanographic Institution (WHOI) in cooperation with the Universityof Kiel and the University of Bremen, Federal Republic of Germany, hasconducted basin-wide sedimentological research in the Nordic Sea sincethe summer of 1983. One of the major field programs was the deploymentof 16 moorings with sediment traps and current meters for a period ofabout one year throughout the basin between 1983 and 1988. As the firststep in the program, we deployed 6 year-round moorings between August,1983 and August, 1986 in the Fram Strait and Norwegian Basin (Fig. 1).In the second phase of the study, sediment trap and current meterdeployments will continue around Iceland and coastal Greenland incooperation with the Marine Research Institute, Reykjavik (refer to Fig.1 and Table I).

_P...

.-..I- ..

On five of the mooring arrays deployed in the northern Nordic Seas,Aanderaa current meters with thermister chains were attached. At leastone of the current meters on an array was positioned close to the L

sediment trap - usually 50 or 100 meters below the trap. Information onthe design of the mooring arrays deployed in the Nordic Seas experimentwill be published elsewhere in this data series. Of the 11 currentmeters deployed in this area, two meters (the only current meter on theBI-I station, off Bear Island-Storfjord, and one of three deployed at theshallower depth at GB-I station, Greenland Basin during 1985-1986) failedto record data. At the Lofoten Basin Station (LB-l) 2 current meterswere deployed at 2,650 m and 2,975 m. Although both current metersworked, the record from only the shallower instrument is included in thisdata file. .0

All other current meters functioned for about one year or a slightly -shorter period, and the data greatly contributed to an understanding ofthe relationship between current and mass fluxes of ocean particles inthis area. In this data file are presented current vectors, vectorcomponents, vector average diagrams and temperature records. Also, theeast and north components of frequency auto-spectrum and frequency rotaryspectrum were computed and attached. We follow the style taken by "Fram io %Strait Current Measurements, 1984-1985" by Aagaard et al., 1985, 85 pp., .published in Bergen, Norway, to compile this data file. ,W

Technical note

For spectrum calculations, each data series was divided into roughly .uv

5 pieces, each about 2-1/2 months long (2048 hourly points, 512 4-hourly %

points). Means were removed from each piece separately, and they werepre-whitened. Pre-whitening is using first differences, in the timedomain, to reduce the low-frequency components of a series. On plotting,the spectra were averaged in increasingly large groups at the highfrequencies to reduce superfluous points. They also were "re-colored" torestore the low-frequency information. The confidence levels indicatehow closely the spectral estimates match the true variance. Tho rotaryspectra represent the circular decomposition of a 2-dimensional vectorseries into clockwise (here, negative) and counterclockwise (positive)harmonic components. Unfortunately, only 4-hourly data was available forLB-I. All other spectra are on hourly data.

.'..-.......

~&.. A. ~ .&..." A• m1. . A. * ]

Acknowledgments

The Nordic Sea is one of the most difficult ocean areas forLoceanographic logistics. We have received a great deal of help and goodwill from international colleagues in pursuing this project. Inparticular, Dr. Jdrn Thiede, Chief Scientist of the 1984 and 1985 legs,rendered us every possible opportunity to make this experiment successful Non board R/V Polarstern, Alfred Wegener Institution for Polar and MarineResearch, Bremerhaven. In memory of the first recovery cruise in 1984 onboard R/V Polarstern, a track chart of Arktis II, leg 4 is included inthis data file as Fig. 2. We also thank R/V Meteor (old) and theDeutsche Hydrographische Institute, Hamburg, which supported us during adifficult mission to recover a malfunctioned mooring and to deploy a 1large array in the Greenland Sea during 1985. Dr. Jens Meike maderecovery of the FS-l mooring possible through his care and competence asChief Scientist of R/V Valdivia during the summer of 1985. %

Dr. Vernon Asper, University of Southern Mississippi, StevenManganini and Dorinda Ostermann, WHOI, contributed to the preparationsand deployment of arrays in this difficult ocean. Their dedication andimagination made this program take off. Peter Clay and Thomas Crook

,

provided vital assistance in recovering a stranded GB-I mooring in thesummer of 1985 on board R/V Meteor (old).

Without the encouragement and funding support from the Office ofNaval Research, this basin-wide sedimentation study would never have beenstarted. We sincerely thank Dr. G. Leonard Johnson for his insight andcommmitment to this project.

:...\ .%

% %.

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Figure 1. Distribution of sediment trap/current meter moorings.

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Island

Figure 2. Cruise track of R/V Polarstern, Bremerhaven, from Tromso to Alesund,Norway, August 8 to 26, 1984.

1983 -1984

DATA

Lofoten Basin

Greenland Basin

A-7 -L

Curret Metr 7-

Curren meters71

Deploed byR/V oforten Bsin ae, 8118

Auguste wihMon1B1, 1983--Agst1,184

.1SV3 ±M M4MON MAfOS SWOAZ3A LN3HSM 3univ3dym2

00LL.a0a

iSV3IS3 HiW K~os SaL3A INHH(O 3HLVHdM'

±SV3 iS3M HLHON K~Lnos SHOMM3 1N3mfl 3Hfl±VK3dfl3L

II I I

N1

idip

z-

z

0L.

ISV3 I.SM KHj~oN IIIO siofL33A imukino 3HiIUVM3dM3L

iSV3 IS31M Kimm# 14Jfos SiO.LM3A D43UWfl 3WUVVi3d2aL

0400

01

0.

ISV3 153A HioN ~nos SVOMA i3HWO 3HLVUdVG

I.,'

0 75 EpAKILoNIErERSN

7i0 #M

83-V I Ii- 16 To 84- 0L-3'

LB-1, 2,650 mL

.4

s p'

-:12-

101 j W I1 1 1 1 I

EAST GMP_ lf NORTH'COMP

104 lo,

, 1

103 z u 10"

u E 101 EiOCL a.LJ

cph cphFREQUENCY FREQUENCY

AUTO-SPECTRUM AUTO-SPECTRUM

105 100-958 -84

10o

10 10- "cphhcph

FREQUENCYFREQUENC

ROTAR SPECTRU

IsJ F83-84E lo'

u.JU

(IL

0, 95% I1

1- 10'cph

FREQUENCYROTARY SPECTRUM

CLOCKWISE IS SOL.ID LINE

-'3-

Current Meter 1484

Greenland Basin

August 1, 1983 - March 12, 1984

740 32'N %

060 40'W

945 meters

Record length: 5,126 hours "%

Deployed by R/V Polarstern, Bremerhaven, 08/1/83....

Recovered by R/V Meteor, Hamburg, 07/30/85

Deployed with Mooring GB-I, 1983-85

-14-

v' " "' ¢ -" -€-" " "i ~ ~ i"-"-" '"- .- -"¢ ' '-" "-" '- '-' ' " - -"- -' -".' -''"* ' " ". -"." ." " "." ''"

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Bc-F

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iS3I3 ~O " SHLAl3WO3M3

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go

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N --{OCT C""

1 48400 t M

83-V 111-02 TO 84- t11-24 EB

C-1, 945 m

MA.

-17-

10'10' NORTH COMP

10 ~idOP10 4 -'

103 - 10

'JJ) -- ( o'z 10' lo,

(I))

10 95% 10 95% leve_

10-ti 104.. 10"1104 10- I0"1 10

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FREQUENCY FREQUENCY

AUTO-SPECTRUM AUTO-SPECTRUMlog

ROTAR SPECT 9A .4.

10' '

1484.9(no.

0Z-

R: lo" -1'

. '

Z o ' 83-84

l~iI.

102' "

E F-

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cph

FREQUENCY

ROTARY SPECTRUMCLOCKWISE IS SOLID LINE

-1-

,- . • . o . ... • o .. ,. .. . . . . -, , S . , ' s.. J , . , . ,, • . • . , . • . . . ., -

Current Meter 1485

Greenland Basin

August 1, 1983 - August 22, 1984

740 32'N .

06° 40'W

1,842 meters

Record length: 9,120 hours

Deployed by R/V Polarstern, Bremerhaven, 08/1/83



N' V,

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ISV3 ±S3AA I4ION HIAGS SH=L3A JJOHUAO 3fLVNDd11L

1 - 4.

iSV3LA KHON HOL3A L WkfO Un~np

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FREQUENCY FREQUENCYAUTO-SPECTRUM AUTO-SPECTRUM

S-

10, ROTARY SPECT&

103 '

101 -41485

z 0o ~ -I ,,-

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10- 1485

cphFREQUENCY


-24-

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P..N"

B,

Current Meter 2752

Greenland Basin

August 1, 1983 - September 27, 1984

740 32'N'p.

060 40'W

2,929 meters


Deployed by R/V Polarstern, Bremerhaven, 08/1/83P

4

Recovered by R/V Meteor, Hamburg, 07/30/85 4"


-25-I.]

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2752G Na0 IrM

1J-t 02 to 84- 2X-24 R

GB-I, 2,926 m N MAY

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-2 9-

EAS TOMP NORTH COMP

10 1 0.

10, W

LjJJ

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E E

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10 -1* I , , I ____ ___ ___ ____ ___ ___ ___-___ __,___

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FREQUENCY FREQUENCYAUTO-SPECTRUM AUTO-SPECTRUM

10 IOTARY SPECT6

10'

- ', , 2752 ""

10' 8,3-84

u% E

10- ' 95% level

10 "'1 .0 - 2 1 0-1 !

cphFREQUENCY

ROTARY SPECTRUMCLOCKWISE IS SOI.ID INE %

-30--

,- . - -.-- '-".-.,,.;.-".- .- * ~ - . . * .--.--.- v -. '. ... ,:.:.'.--.. ..- ;.....-.-.. .-:.. ... .:-.*..... *5 ..-. :.: .- ,-,- -v .-.- ,.--5

*1

Greenland Basin

1983 - 1984

Vector Diagram

Three-dimensional plots

August 1, 1983 - July 30, 1984

V

945 m, #1484

1,842 m, #1485

2,929 m, #2752

-31-

VECTOR DIAGRAM

GREENLAND BASIN, GB-i

74 32'N, 06 40'W

AUGUST, 1983 - AUGUST 1984

Anchor depth: 3,417 m

Nov.

APR I

UL A A

Nov.

'JUL'

-32-

1984 - 1985

DATA

Fram Strait

Greenland Basin

Current Meter 2814

A.

Fram Strait

August 20, 1984 - August 10, 1985

780 52'N

010 22'E

2,476 meters


'

Deployed by R/V Polarstern, Bremerhaven, 08/20/84


Deployed with Mooring FS-I, 1984-85

,%.

.,

5%1

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uG

UL

up(p

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1~~ DEC -2814~GG E

111VI-21 '0 Is-V;1-Q9 AUG

FS-1, 2,776 m

-37 -

10lo,EAST COMP

04 10'

103 o

CLU

10 0 10 u 0'

E0 10,

Z ul

10-11~ 100'1

10- I_. 10-1 9074 ev0ael-

cph cphFREQUENCREQUENCYC

ROTARY SPE&TRU

1-33

-. -2814

.1--

1985 - 1986

DATA

Fram Strait

.5-

.1:

N

-39--

94

Current Meter 2814

Fram Strait

78* 52'N

010 22'E

2,476 meters


Deployed by R/V Polarstern, Bremerhaven

Recovered by R/V Valdivia, Hamburg

Deployed with Mooring FS-2, 1985-86

-40-

.ISV ±S3M RWLON RIMlS SU=.L3A LIN3:WW* 3NIUV'43Mn10 R 2 R 22 2 .9 R .

C.4

C44

4x4

0

70 0(44IM RNN Hio H13 3lr n" I

IS5V3 IA HION H.LnOS S80O133A J.N388no J3fl~VH3dVl]Lo 0 00 0 0-

C44

zz

aG

(n S

-42

A N

-o. .

l--

2,,

...

b-'S-2 2,*8

,.

S P /

':/FS2,238

/%

:& ; . ¢ ' : "=£ ; .: ".. "g """ =zl, "" : _ % ; "-?: ; -;: ? -, -' "{ .- ; -; "? : -'",; ' '? . ' -; " '; "? "; - - '. -, "- : -. .: ./ "i';

I0' fil4-1r-'- -r--NOR iii COMP

10' 0 \EAST COP

0

_ - L

Fn Q.

Z Q 10 (/ 10'

w, 0

10* 95% level -10 ieAeUO S

-

I 0 [ I I ! |

ROTAR3.I

S1E10, TR 1 10 1

FRQECY cpnFREQENCYFREQUENCY

AUTO-SPECTRUM AUTO-SPECTRUMGBFS85-86 GBFS85-86

).,.IO OTAR' SPE&IiA

10.1 O* 1

2814

z~ i I .,'lo If I

102 - J

oE

10,

10* 95% level -'

o- 01 10 - 1 10':"

cphFREQUENCY

ROTARY SPECTRUMCLOCKWISE IS SOID LINE

GBFS85-86

-44-

-" ' '.# #'- -, €""# '---,e°, "5' ............. ,*'.*, ",-''. °'',,''*,.*'.- "* -. - "''-,'" . •. -.. ' ..**. ' . -"-.-*".". .. ' -. '.--'

Current Meter 1484

Greenland Basin

August 1, 1985 - March 20, 1986

740 35'N

060 43'W

980 meters

Record length: (partial) %

Deployed by R/V Meteor, Hamburg, 08/02/85

Recovered by R/V Valdivia, Hamberg, 08/23/86

Deployed with Mooring GB-2, 1985-86

-45-

J.5Y3 .S31A IUmoN HJAos SN1OIL33A J.NIMA 3UflJian3±

000

ww

Ix-

z8

z

0 0

t. 4 -4 f.-

±S~V3 JS3M KWON Hinos SSO1O3A LN3Nsn3 3HLV?3dr(J.22 go 2 0 g 2 0 g

40 I II

v ., .. r

cc2

'-C'

c

w

LiL

75

484G,

0 CMi

85-VI.II-01 TO 86- 111-24

GB-2, 1.,857 m.%1

4 .4u

i..

.

Current Meter 1485

Greenland Basin

August 1, 1985 - August 20, 1986

74' 35'N

060 43'W

1,857 meters

Record length: 8,688


Recovered by R/V Valdivia, Hamburg, 08/23/86


49

-w

.9

N~

ISV3 ISJM HiMON WOfOS SMJQL3A INJWAZ 3kA±'V)AGd"3.±

Laa

Laa

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C,.

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p

InF

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o o 0 Q

LJJ

wi A

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-A J

.LSV3 ISM HiaoN wn~fos SVO.3A IM3UW*3 unvadm3

o a O a 2 o a- - 1 P) -0

do I~I

zN

a:a

-52

N

0 75KILOMETERSAU

SE OV MIAR JUL148500 o R AU

85-VIII-Ol TO 86-'Vil-16 ECr

GB-2, 1,875 m

, ,AS CIOMP 10K cOR COMP'I 1 ' -Z o1

V I O ) 0o ;'

10 I 102

10,

S 100 ) 0

10' 95. level -10' 95% level

10-2110 10 1 1100 10100-i 0

"1 IV 0 - 1 - -

cph cphFREQUENCY FREQUENCY

AUTO-SPECTRUM AUTO-SPECTRUM

101

1485CL 85-86

-" 10* t I

JuCL

(/1 104

10'- 95% level

10-2 110a 10-2 I0"

cphFREQUENCY

ROTARY SPECTRUMCLOCKWISE IS SOLID L.INE

-54-'

Current Meter 2752

Greenland Basin

August 1, 1985 - April 19, 1986

740 35'N

060 43'W

2,923 meters

Record length: 6,264




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-57

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GB-2, 2,923 rOCT

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_ :' 1 100

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100,' - 95% level 1 9 l

10- 10 - 1 0- 2

cphFREQUENCY


-539- ,.1Z-,".

w.. ~- ~ . -S-

Current Meter 1484and

Current Meter 1485

Greenland Basin

August 1, 1985 - April 16, 1986

740 35 'N

060 43'W

Conductivity Measurements




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.75

VECTOR DIAGRAM

GREENLAND BASIN, GB-2

74 35- N, 06 43-WNS.

AUGUST, 1985 - AUGUST 1986

Anchor depth: 3,445 m

DE I U

UHN ApR

-AUG

.05

-65-

REPORT DOCUMENTATION 1 01"~O-87-18 2. L Recplear. AccessionNo

S PAGE I_______________

Current Measurements from the Northern Nordic Seas 1983-1986 February 1987

(Nordic Seas Sedimentation Data File, Vol. 2)

7. Author(s) L. Performift Orgauizaation nept. No.

Susumu Honjo, Christine M. Wooding,L Gerold Wefer -___ -WHOI-87-18 -9. Performing Orgaiz t",nMame* and Address 10. proiect/Tss&/work unitme

Woods Hole Oceanographic Institution _____Woods Hole, Massachusetts 02543 It. Cantract(C) or GraurtG) No.

- (C)

(G) N00014-85-C-OO01

12L Sponserkng OrganIzation Norme and Ades1L. Type of Report a Period Covered

Off ice of Naval Research Technical

14.

IL. Supplentary Notes E

This report should be cited as: Woods Hole Oceanogr. Inst. Tech. Rept. WHOI-87 18..

14L Ahotr5ip (Umit 20W wor)

Records from ten Aanderaa current meters deployed along with 5 current meter/sedimenttrap mooring arrays in the Fram Strait and Greenland Basin, each deployed forapproximately one year between 1983 and 1986, are presented in this data file. Dataincluded are current vectors, temperatures, frequency spectra, and two- and three-dimensional vector diagrams.

17. Docaument Analysis a. Dowrptr

1. Nordic Seas2. Current meter data3. Spectral Analysis

b. Idesntlfe/Open-Ended Terms

c. COSATI Field/Group

1IL Availability Statemn. £9. Security Cie"e (T"i "tPon) 121. No at pags"

Approved for publication; distribution unlimited IUNCLASSIFIED 6 _520. Security CIOge (This Polge) Z2. Pvtce

L(SeeANSI-M3.18) See Dneftuctio"~ on Reverse 0PTI@--- FORm 2724-7(Formerly NTIS-35)

Dspertowen of Commerc*

DOCUMENT LIBRARYNovember 21, 1986

Distribution List for Technical Report ExchangeInstitute of Marine Sciences Library MIT LibrariesUniversity of Alaska Serial Journal Room 14E-210O'Neill Building Cambridge, MA 02139905 Koyukuk Ave., NorthFairbanks, AK Director, Ralph M. Parsons Laboratory 'S

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