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

Transcription

1 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

2 Canadian Data Report of Fisheries and Auatic Sciences These reports provide a medium for filing and archiving data compilations where little or no analysis is included. Such compilations commonly will have been prepared in support of other journal publications or reports. The subject matter of Data Reports reflects the broad interests and policies of the Department of Fisheries and Oceans, namely, fisheries management, technology and development, ocean sciences, and auatic environments relevant to Canada. Numbers 1-25 in this series were issued as Fisheries and Marine Service Data Record. Numbers were issued as Department of Fisherie and the Environment, Fisheries and Marine Service Data Reports. The current series name was changed with report number 161. Data Reports are not intended for general di tribution and the contents must not be referred to in other publication without prior written clearance from the i uing establishment. The correct citation appear above the abstract of each report. Rapport statistiue canadien des sciences halieutiues et auatiues Ce rapport ervent de ba e a la compilation de donnee de cla ement et d'archive pour Ie uelles il y a peu ou point d'analyse. Cette compilation aura d'ordinaire ete preparee pour appuyer d'autre publications ou rapports. Le sujets des Rapport stati tiue refletent la vaste gamme de interets et politiues du Ministere des Peches et de Oceans, notamment gestion de peches, techniues et developpement, ciences oceaniues et environnements auatiues, au Canada. Le numero I a 25 de cette serie ont ete publies a titre de Record stati tiues, Service de peches et de la mer. Les numeros ont ete publiesa titrede Rapports statistiues du Service de peches et de la mer, Ministere de Peche et de ren ironnement. Le nom de la erie a ete modifie a partir du numero 161. Les Rapport tati tiues ne ont pa prepares pour une aste di tribution et leur contenu ne doit pas etre mentionne dans une publication sans autorisation ecrite prealable de l'etabli sement auteur. Le titre exact parait au haut du resume de chaue rapport.

3 » 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 4A I i * t I i I 1 I I i, l This is the 14th Data Marine from the

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

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

6 ABSTRACT K.F Moored current meter 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 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",",

7 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

8 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

9 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.

10 _1:g.; 4. TABLE 1 Lat. HSI ' 29' ' 1 HS HS ' 09' HS ' 22'

11 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 C 1 C.070 C C c HS c c HS c c c I j.a... a.l...[.!. L.0&

12 6 TABLE 3 Mean Currents and their Standard in ms-l. Along-Strait Mean Mean Rate HS , , , HS

13 65 HUDSON STRAIT ;,) HS 3 HS 2 CIIHS , HS 5 \::) ';:) "... :: l U E 8 E C D '", ', ', ", " e b(). Fig. 1 Hudson showing locations.

14 8 HS4 HS3 HS2 HSI Advance (f) 150 LiJ a:: f- w Cruise " Aug 21 - Oct "'::,,. Current Meters )\ T- S Choin Kilometers

15 HS3 HS UJ 0:: W I- 300 w 400 Cruise Aug 21 - Oct 15, Current Meters o meters and

16 10 9 «' i 00- :t: M +'. _ I (fj :t: E o It)

17 11 HUDSON STRAIT 3. 'Y c:;:) m 61" 200m o 1! 2 3 ms-' 60" Fig. It Mean currents

18

19 13 Time series plots, of current rates and directions, temperatures and salinities, plus progressive vector Hudson Strait moorings.

20 14 SA LINITY 33.0 ao U HUDSON STRAIT 1IS1

21 15 x...; g ('I) ; 0 sa 0 CO 0 :::s := 0 E-< -< 0 Il:: E-< 00 Z 0 $ I(')...

22 16

23 1 1.0 U 0.8 rn. rn E-t c.!s Q

24 )l f6 I i... i

25 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

26 U "" E-t E-t C; Q f- DIRECTION JJ' 'Jil'f 1#]1 I I I, I\ rj I/ I SALINITY I i l' ',' TEMPERATURE (1982) HUDSON STRAIT BS!

27 21

28 22

29 U 0.8 rn "-. rn 0.8 ex: E-« '70.0 S ci

30 24

31 25

32 U 0..8 Jj;:l rn 0.6 rn Jj;:l 0.4- E-! Jj;:l Jj;:l E-! Jj;:l

33 27

34 28

35 t) rn rn E-4 r:z:i

36 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

37

38

39 w -55, o b ' KILOMETRES HUDSON STRAlT HS3 200 AI

40 34

41 r.n " p::; 0.4- E-4 Q.2 id OD I 32.0 id OD -id HUDSON STRAIT

42 r '1.0 LV 0\ I, i 8 I t I! I! I! I pi, I, I a I! I, i tit I, j $ B75.G-300.G-325.G-300.G-275.G-250.G-225.G-200.o-175.o-100.o-125.D-l I LOMETRES HUDSON STRAIT HS4-30 M

43 ----37

44 U 0.8 fi3 "'- 0.6 If.I Il::

45 , \ LV \ "---'---I...--'-.L.--I---l..----''----..l...--'---l.._'---'-...!-..--'----L_-'---l...---L.---I_-'---L-..L---..JI J KILOMETRES HUDSON STRAIT HS4 100 M

46 40 iii.-oj!xl N t::! N -..-1< Q)l rg "".-I < N f-< Il:: (' }.-oj tt ::: I -i -i 0 ci N "" Fil $

47 U 0.8 UJ ""- UJ ci (1982) HUDSON STRAIT HS5 30M

48 en r:r:: :J HUDSON STRAIT

49 43

50 U 0.8 M rn " rn M 0.4- E-4 M E ci r;1 U HUDSON STRAIT HS5

51 -.o L a ; n

52 d is ro ::i! :=