No.381. Moored Current Meter Dat-- from.hudson Strait, 1982. Canadian Data Report of Fisheries and Aquatic Sciences. . K.F.

Moored Current Meter Dat-- from.hudson Strait, 1982 r :- '... K.F. Drinkwater Marine Ecology Laboratory Ocean Science ano Surveys, Atlantic Departmnt of Fisheries and Oceans Bedford Institute of Oceanography PO. Box 1006 Dartmouth, Nova Scotia B2Y 4A2 February 1983 Canadian Data Report of Fisheries and Auatic Sciences No.381

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» I E I i I Ii It I I I f I Ii I! I i I I = I I i I I r I J I J I i, Canadian Data Fisheries and Auatic Sciences 381 February 1983 MOORED CURRENT METER DATA FROM HUDSON STRAIT by K.F. Drinkwater Marine Ecology Ocean Science and Atlantic Department of Fisheries and Oceans Bedford Institute of P.O. Box 1006 Dartmouth, Nova Scotia B2Y 4A2 1982 I i * t I i I 1 I I i, l This is the 14th Data Marine from the

ii of 1 Cat. No. Correct for K.F. 1 1

CONTENTS Abstract Introduction Mooring Information 1 Data 2 Acknowledgements 3 References Appendix 2

ABSTRACT K.F. 1983. Moored current meter 1 + 46 A current meter array was moored to 1 data are rates in mean currents as as amplitudes and phase lags for the M2 a,re Drinkwater, K.F. 1983. Moored current meter from 1 Data. + Du mois au mois 1 on courantometres dans Ie detroit dihudson. nr.lnn"p<: sur et du courant ainsi ue sur la et sont sous forme On courants moyens et decalages de phase pour les composantes U"-'UH",",

Introduction Sutcliffe (1983) identified outflow from Hudson Strait a an important nutrient source Shelf. In 1982 the Laboratory of the a field investigation Labrador Shelf-Hudson a current meter array was moored in Hudson and t"o''''''"t presents the current meter data. Information current meter array was located west of consisted of four stations (HSI-HS4) along a transect northeast from the Quebec shore to Baffin Island and one further to the east in the center of the Strait (see 1). are in Fig. moor ing is km 1. in the table to consecutive A ther was at da ta are not presented herein. All current meters were with and sensors. as an an AMF acoustic a current meter are

I... IIII... IIIIIII II.II nata Measurementsof current rate and salinity were every 15 raw to remove are days are given in Julian days (day run fue amplitudes and phase lags for standard a of the data. current the currents were then These currents from a f were then vector vector if always under the influence of the measured current. The arrow in a upper r corner of the progressive vector every five the across the the dates are in the the r (t data were determine a mean

3 125 0 T) mean rate and directions are listed in Table 3 and the mean currents are plotted in Fig. 4. ACKNOWLEDGEMENTS I would like to thank those people who recovery of the current meters, especially G. Scotney, J. Galliott, L. Bellefontaine and P. Also thanks are M. to R. W. Tr B. MacLean, P. B. for various Finally I the crew Hudson for their cooperation helpful Sutcl W.H. Jr., R.H. Loucks, K. A. R. Coote. 1 flux onto the conseuences.

_1:g.; 4. TABLE 1 Lat. HSI 493 6 09' 29' 51 494 6 19' 1 HS3 495 6 200 HS4 496 01 ' 09' 1 2 1 HS5 497 3' 22'

5 TABLE 2 The Amplitudes and Phase Lags for the M2 Constituent Station Depth Major Axis Amp.- Phase Direction (ms-1) Minor Axis Amp' Phase Rotation (ms-1) HSI 30.297 189 0 107 0 50.289 1 1 100.295 186 0 113 0 200.235 180 0 116 0 C 1 C.070 C.008 270 0 C 30.206 c HS3 30.257 117 0 200.275 172 0 1120.027 c.056 2620 c HS4 30.464 170 0 110 0 100.411 1 11.046 260 0 c c 1 92 0 1 21 c I...... j.a... a.l...[.!. L.0&

6 TABLE 3 Mean Currents and their Standard in ms-l. Along-Strait Mean Mean Rate 30.145 11 50 1.094 103 0 100.122 1 1 1 200.034-.120 1 HS2 30 1 -,011 1 30 -.028 056 -, 200.018.014 30,013 31 100 -.048.052 -.014 050. HS5 30 -.010 -. 200

65 HUDSON STRAIT ;,) HS 3 HS 2 CIIHS4... -...., HS 5 \::) ';:) "... :: -162 0 -...l U E 8 E C D '", ', ', ", " e b(). Fig. 1 Hudson showing locations.

8 HS4 HS3 HS2 HSI Advance 20 40 60 80 100 (f) 150 LiJ a:: f- w 250 300 Cruise 82-027 " Aug 21 - Oct 15.1982"'::,,. Current Meters )\ T- S Choin Kilometers

0 20 40 60 80 100 HS3 HS5 150 200 UJ 0:: W I- 300 w 400 Cruise 82-027 Aug 21 - Oct 15,1982 500 Current Meters o 20 40 meters and

10 9 «' i 00- :t: M +'. _ I (fj :t: E o It)

11 HUDSON STRAIT 3. 'Y c:;:).------ 100m 61" 200m o 1! 2 3 ms-' 60" Fig. It Mean currents

13 Time series plots, of current rates and directions, temperatures and salinities, plus progressive vector Hudson Strait moorings.

14 SA LINITY 33.0 ao U 1.0 0.0-1.0 HUDSON STRAIT 1IS1

15 x...; g ('I)... 0...; 0 sa 0 CO 0 :::s... 00 := 0 E-< -< 0 Il:: E-< 00 Z 0 $ I(')...

16

1 1.0 U 0.8 rn. rn. 0.6 0.4- E-t 02 0.0 300.0 270.0 c.!s Q 100.0 00.0 0.0 34.0

)l f6 I i... i

19 N 0 r:: N N t-- N t-- (0 N.:a N Q t-- U"l N :is -i N... E--< U"l N -< Eo-< Ul Z &3 N Cl ;:J ::.r.: N N """ - c C\! (0 C\! 0 ci 0 0 """ 0 ci """ ci I I I

20 1.0 U 0.8 00 ""--. 0.6 00 0.4- E-t 02 0.0 360.0 270.0 E-t 180.0 C; Q 90.0 0.0 f- DIRECTION JJ' 'Jil'f 1#]1 I I I, I\ rj I/ I SALINITY I i l' ',' - - - 34.0 33.0 32.0 31.0 3.0 TEMPERATURE 2.0 1.0-1.0 233.0 (1982) HUDSON STRAIT BS!

21

22

23 1.0 U 0.8 rn "-. rn 0.8 ex: E-«0.4-0.2 0.0 360.0 2'70.0 S 180.0 ci 0 90.0 0.0 34-.0 33.0 32.0 31.0 3.0 2.0 1.0

24

25

26 1.0 U 0..8 Jj;:l rn 0.6 rn Jj;:l 0.4- E-! Jj;:l 02 0.0 360.0 Jj;:l 270.0 E-! 180.0 Jj;:l 0 34-.0 33.0 32.0

27

28

t) rn rn 1.0 0.8 0.8 0.4- E-4 r:z:i 02 0.0 360.0 270.0 180.0 90.0 0.0 34-.0 32.0

30 a:l Cf) N 0 (;) (;) Cf) 10?a I :; I N I I I I 8...-l I 0- d == I... :;...-l I 0 CD -I ::::- I == I 8 N I

34.0 31.0 3.0

-5.0 248.0-15.0-25.0 258.0-35.0 268.0 w -55,0 270.0 -.o -------------- b- -80.0 -'70.0 --60.0-50.0-40.0-30.0-20.0-10.0 0.0 KILOMETRES HUDSON STRAlT HS3 200 AI

34

35 0.8 r.n "-... 0.6 p::; 0.4- E-4 Q.2 id ----------------------------- OD I 32.0 id OD -id HUDSON STRAIT 273.0 283.0

1 140.0 115.0 90.0 r 65.0 267.0 40.0 15.0 257.0 23'1.0 LV 0\ -10.0-35.0 --60.0-85.0 I, i 8 I t I! I! I! I pi, I, I a I! I, i tit I, j $ -4.-09-B75.G-300.G-325.G-300.G-275.G-250.G-225.G-200.o-175.o-100.o-125.D-l00.0-75.0-50.0-25.0 0.0 I LOMETRES HUDSON STRAIT HS4-30 M

----37

38 1.0 U 0.8 fi3 "'- 0.6 If.I Il:: 0.4 34.0 33.0 32.0 31.0 3.0 2.0 1.0

, 40.0 20.0 \ 0.0 237.0-20.0-40.0 LV \0-100.0 1-1...-"---'---I...--'-.L.--I---l..----''----..l...--'---l.._'---'-...!-..--'----L_-'---l...---L.---I_-'---L-..L---..JI...-..-J -250.9-230.0-210.0-190.0-170.0-150.0-130.0-110.0-90.0-70.0-50.0-30.0-10.0 KILOMETRES HUDSON STRAIT HS4 100 M

40 iii.-oj!xl N t::! N -..-1< Q)l rg "".-I < N f-< Il:: (' }.-oj tt :::-- 10 0 10 0.-I -i -i 0 ci 0 9 9 9 N "" Fil $

41 1.0 U 0.8 UJ ""- UJ 0.6 0.4-02 0.0 300.0 270.0 180.0 ci 90.0 0.0 233.0 243.0 253.0 263.0 (1982) HUDSON STRAIT HS5 30M 273.0 283.0

42-50.0-100.0 247.0-150.0 en 257.0 r:r:: -200.0 0 267.0...:J - -250.0-300.0 277.0-350.0-110.0-60.0 HUDSON STRAIT

43

44 1.0 U 0.8 M rn "-... 0.6 rn M 0.4- E-4 M 02 0.0 360.0 270.0 E-4 180.0 ci 0 90.0 0.0 34.0 33.0 32.0 31.0 3.0 r;1 U 2.0 1.0 0.0-1.0-2.0 HUDSON STRAIT HS5

-.o L- 45-100.0-150.0 a 1-4 -200.0-110.0-60.0-10.0 - ; n

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