Observed features of temperature, salinity and current in central Chukchi Sea during the summer of 2012

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Observed features of temperature, salinity and current in central Chukchi Sea during the summer of 2012
	He Yan; Liu Na; Chen Hongxia; Teng Fei; Lin Lina; Wang Huiwu
刊名	ACTA OCEANOLOGICA SINICA
	2015
卷号	34 期号:5 页码:51-59
关键词	Chukchi Sea submersible mooring measurement long-term observations temperature and salinity velocity profile
通讯作者	heyan@fio.org.cn
中文摘要	During the summer of 2012, the fifth CHINARE Arctic Expedition was carried out, and a submersible mooring system was deployed in M5 station located at (69 degrees 30.155'N,169 degrees 00.654'W) and recovered 50d later. A set of temperature, salinity and current profile records was acquired. The characteristics of these observations are analyzed in this paper. Some main results are achieved as below. (1) Temperature generally decreases while salinity generally increases with increasing depth. The average values of all records are 2.98 degrees C and 32.21 psu. (2) Salinity and temperature are well negatively correlated, and the correlation coefficient between them is -0.84. However, they did not always vary synchronously. Their co-variation featured different characters during different significant periods. (3) The average velocity for the whole water column is 141 mm/s with directional angle of 347.1 degrees. The statistical distribution curve of velocity record number gets narrower with increasing depth. More than 85% of the recorded velocities are northward, and the mean magnitudes of dominated northward velocities are 100-150 mm/s. (4) Rotary spectrum analysis shows that motions with low frequency take a majority of energy in all layers. The most significant energy peaks for all layers are around 0.012 cph (about 3.5 d period), while the tidal motion in mooring area is nonsignificant. (5) Velocities in all layers feature similar and synchronous temporal variations, except for the slight decrease in magnitude and leftward twist from top to bottom. The directions of velocity correspond well to those of surface wind. The average northward volume transport per square meter is 0.1-0.2 m(3)/s under southerly wind, but about -0.2 m(3)/s during northerly wind burst.
学科主题	Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15089]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	He Yan,Liu Na,Chen Hongxia,et al. Observed features of temperature, salinity and current in central Chukchi Sea during the summer of 2012[J]. ACTA OCEANOLOGICA SINICA,2015,34(5):51-59.
APA	He Yan,Liu Na,Chen Hongxia,Teng Fei,Lin Lina,&Wang Huiwu.(2015).Observed features of temperature, salinity and current in central Chukchi Sea during the summer of 2012.ACTA OCEANOLOGICA SINICA,34(5),51-59.
MLA	He Yan,et al."Observed features of temperature, salinity and current in central Chukchi Sea during the summer of 2012".ACTA OCEANOLOGICA SINICA 34.5(2015):51-59.