Footprints of obliquely incident internal solitary waves and internal tides near the shelf break in the northern South China Sea

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Footprints of obliquely incident internal solitary waves and internal tides near the shelf break in the northern South China Sea
	Ma, Xiaochuan 1,2; Yan, Jun 1; Hou, Yijun 3; Lin, Feilong 4; Zheng, Xufeng 5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2016-12-01
卷号	121 期号:12 页码:8706-8719
英文摘要	A mooring system and two sites of bottom currents were deployed over the slope and near the shelf break on the propagating paths of internal solitary waves (ISWs), west off Dongsha Atoll in the northern South China Sea. Data indicated that energetic ISWs obliquely shoaled onto the shelf west off Dongsha Atoll in an approximately 290 degrees direction, causing strong reversing currents (some exceeding 80 cm/s) near the bottom. Two types of sandwaves and short scour channels are discernible on the seafloor near the shelf break, which have reasonable correlations with the obliquely incident ISWs and internal tides. Type 1 sandwaves, featured by ISWs at the depths of 130-150 m, have flat crests interacting with the isobaths at an angle of nearly 45 degrees which slightly incline and migrate upslope. Type 2 sandwaves are associated with internal tides, which have crests parallel to the isobaths and distinctly incline and migrate downslope. Short channels are parallel to the depth contours and truncate the strata, which could be formed and maintained by along-slope currents that are probably produced by the obliquely ISWs on a large gradient (gamma>0.8 degrees). The ISWs can move coarse grains or suspend fine grains but do not change the long-term trend of sediment transport on the seabed with larger gradients (gamma/c>1), which is dominated by internal tides. These features are likely widespread near the shelf break in the northern South China Sea and other seas but are limited on mild slopes where ISWs do not break.
收录类别	SCI
语种	英语
WOS记录号	WOS:000393140400016
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/136313]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.SOA, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Zhejiang, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xiaochuan,Yan, Jun,Hou, Yijun,et al. Footprints of obliquely incident internal solitary waves and internal tides near the shelf break in the northern South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2016,121(12):8706-8719.
APA	Ma, Xiaochuan,Yan, Jun,Hou, Yijun,Lin, Feilong,&Zheng, Xufeng.(2016).Footprints of obliquely incident internal solitary waves and internal tides near the shelf break in the northern South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,121(12),8706-8719.
MLA	Ma, Xiaochuan,et al."Footprints of obliquely incident internal solitary waves and internal tides near the shelf break in the northern South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 121.12(2016):8706-8719.