Study of tide and residual current observations in Chukchi Sea in the summer 2008

WANG Hui-wu; CHEN Hong-xia; LV Lian-gang; WANG Dao-long

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WANG Hui-wu, CHEN Hong-xia, LV Lian-gang, WANG Dao-long. Study of tide and residual current observations in Chukchi Sea in the summer 2008[J]. Haiyang Xuebao, 2011, 33(6): 1-8.

Citation:

WANG Hui-wu, CHEN Hong-xia, LV Lian-gang, WANG Dao-long. Study of tide and residual current observations in Chukchi Sea in the summer 2008[J]. Haiyang Xuebao, 2011, 33(6): 1-8.

WANG Hui-wu, CHEN Hong-xia, LV Lian-gang, WANG Dao-long. Study of tide and residual current observations in Chukchi Sea in the summer 2008[J]. Haiyang Xuebao, 2011, 33(6): 1-8.

Citation:

WANG Hui-wu, CHEN Hong-xia, LV Lian-gang, WANG Dao-long. Study of tide and residual current observations in Chukchi Sea in the summer 2008[J]. Haiyang Xuebao, 2011, 33(6): 1-8.

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Study of tide and residual current observations in Chukchi Sea in the summer 2008

1.
First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China;Center for Ocean and Climate Research,State Oceanic Administration,Qingdao 266061, China
2.
First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China;Key Lab of Marine Science and Numerical Modeling,State Oceanic Administration,Qindao 266061,China

Received Date: 2010-07-28
Rev Recd Date: 2011-05-27

Abstract

Abstract

Based on the Acoustic Doppler Current Profilers obtained from a shallow mooring deployed in the Central Channel of the Chukchi Sea(71°40.024'N,167°58.910'W) during 5 August to 7 September in the third Chinese Arctic Research Expedition 2008, the distribution of sea currents is studied, focusing on the trend of the vertical structure of currents, profile characteristics and baroclinicity. Main results incudes:(1) 6 significant tidal constituents predominate in this area, which are the semidiurnal tidal M₁, S₂ and N₂, and the recent tidal O₁, astronomical tidal MM and MSF, while the M₂ semidiurnal tidal represents the most significant, the trend of all the half-day tidal ellipses shows counterclockwise Rotation; (2) The average measured current profile throughout the flow is north-northeast flow with the average residual current magnitude of 6.6 cm/s; (3) There is a significant vertically synchronous cyclical changes for the residual current in all layers; (4) In depth range of 8~11 m, the average baroclinic kinetic energy is stronger, while it is relatively weak below 18 m, in depth of 11~18 m the average kinetic energy of baroclinic decrease gradually from up to down, with the average baroclinic flow change to be smaller gradually.
- Chukchi Sea,
- tide and current,
- depth-dependent current

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References(21)

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