| CHEN Hongxia,WANG Huiwu,SHU Qi,WANG Daolong,LIU Na. 2013. Ocean current observation and spectrum analysis in central Chukchi Sea during the summer of 2008. Acta Oceanologica Sinica, 32(3):10－18 |
| Ocean current observation and spectrum analysis in central Chukchi Sea during the summer of 2008 |
| Ocean current observation and spectrum analysis in central Chukchi Sea during the summer of 2008 |
| Received:August 03, 2012 Revised:October 30, 2012 |
| DOI：10.1007/s13131-013-0283-7 |
| Key words:Arctic Ocean Chukchi Sea submersible mooring system long-term observations spectrum analysis |
| 中文关键词: Arctic Ocean Chukchi Sea submersible mooring system long-term observations spectrum analysis |
| 基金项目:The National Key Basic Research and Development Plan under contract No. 2010CB950301:"Sea-ice-air interaction in the Southern Ocean and its influence on the south Indian Ocean", International Polar Year Chinese action plan project:"Chukchi Sea & Beaufort Sea ice anomaly variation and its impact on the winter climate of China"; National Science and Technology Support Program under contract No.2006BAB18B02:"Water masses and circulation monitoring technology and its application in the southern ocean"; The Basic Research Fund Project under contract No.FIO SOA 2010T01:"Key technology research of polar mooring observation system". |
| Author Name | Affiliation | E-mail | | CHEN Hongxia | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China | chenhx@fio.org.cn | | WANG Huiwu | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China | | | SHU Qi | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China | | | WANG Daolong | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China | | | LIU Na | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Science and Numerical Modeling, State Oceanic Administration, Qingdao 266061, China | |
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| Abstract: |
| During the summer of 2008, the third CHINARE Arctic Expedition was carried out on board of Xuelong Icebreaker in the central Chukchi Sea. A submersible mooring system was deployed and recovered at Station CN-01 (71°40.024'N, 167°58.910'W) with 33 days of the current profile records, and continuous observation of temperature and salinity data were collected. This mooring station locates in the blank of similar observation area and it is the first time for our Chinese to finish this kind of long-term mooring work in this area. This mooring system finished integrated hydrological observations with long-term continuous record of the whole profile velocity for the first time. Based on time series analysis of temperature, salinity, velocity and flow direction, we get the following main results. (1) During the observation period, the mean surface current velocity is 70.2 cm/s eastward, and velocity reaches its maximum in average at 3 m level with magnitude 90.0 cm/s, direction 206°. (2) In 9-30 m layers, the semidiurnal period variation is the most obvious, the flow direction is quite stable, and the flow is synchronous and consistent vertically. (3) Besides the semidiurnal period variation, the main variation in the upper layer is in 11-d period, with variations in period 5.5, 5.5, and 3.7 d, which reflect the influences of sea surface wind change and maintenance. (4) Near the bottom, the temperature change is correlated and synchronized with the conductivity. |
| 中文摘要: |
| During the summer of 2008, the third CHINARE Arctic Expedition was carried out on board of Xuelong Icebreaker in the central Chukchi Sea. A submersible mooring system was deployed and recovered at Station CN-01 (71°40.024'N, 167°58.910'W) with 33 days of the current profile records, and continuous observation of temperature and salinity data were collected. This mooring station locates in the blank of similar observation area and it is the first time for our Chinese to finish this kind of long-term mooring work in this area. This mooring system finished integrated hydrological observations with long-term continuous record of the whole profile velocity for the first time. Based on time series analysis of temperature, salinity, velocity and flow direction, we get the following main results. (1) During the observation period, the mean surface current velocity is 70.2 cm/s eastward, and velocity reaches its maximum in average at 3 m level with magnitude 90.0 cm/s, direction 206°. (2) In 9-30 m layers, the semidiurnal period variation is the most obvious, the flow direction is quite stable, and the flow is synchronous and consistent vertically. (3) Besides the semidiurnal period variation, the main variation in the upper layer is in 11-d period, with variations in period 5.5, 5.5, and 3.7 d, which reflect the influences of sea surface wind change and maintenance. (4) Near the bottom, the temperature change is correlated and synchronized with the conductivity. |
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