Surface Currents. Northeast Indian Ocean Including the Bay of Bengal, Andaman Sea and South China Sea

1977 ◽  
Author(s):  
NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS
Keyword(s):  
Indian Ocean ◽  
South China Sea ◽  
South China ◽  
Bay Of Bengal ◽  
Andaman Sea ◽  
Surface Currents ◽  
China Sea

TSUNAMI HAZARD AND CASUALTY ESTIMATION IN A COASTAL AREA THAT NEIGHBORS THE INDIAN OCEAN AND SOUTH CHINA SEA

2012 ◽  
Vol 06 (02) ◽  
pp. 1250010 ◽  
Author(s):  
ANAWAT SUPPASRI ◽  
FUMIHIKO IMAMURA ◽  
SHUNICHI KOSHIMURA
Keyword(s):  
Indian Ocean ◽  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Worst Case ◽  
China Sea ◽  
Coastal Population ◽  
The Indian Ocean ◽  
Hazard Level

In the Indian Ocean and the South China Sea, many hundreds of thousands of lives have been lost due to tsunami events, and almost half of the lives lost occurred following the 2004 Indian Ocean event. Potential tsunami case scenarios have been simulated in these regions by a number of researchers to calculate the hazard level. The hazard level is based on a variety of conditions, such as the tsunami height, the inundation area, and the arrival time. However, the current assessments of the hazard levels do not focus on the tsunami risk to a coastal population. This study proposes a new method to quantify the risk to the coastal population in the region that includes the Indian Ocean and the South China Sea. The method is simple and combines the use of readily available tsunami data, far-field tsunami simulation models to determine the regional risk and global population data. An earthquake-generated tsunami was simulated, following an earthquake that had a magnitude larger than 8.5 Mw and occurred along a potential subduction zone. The 2004 Indian Ocean event seemed to be a "worst case scenario"; however, it has been estimated that a potential tsunami, occurring in a coastal region with a high population density, could cause significantly greater casualties.

scholarly journals Molecular and spatial distributions of dicarboxylic acids, oxocarboxylic acids, and <i>α</i>-dicarbonyls in marine aerosols from the South China Sea to the eastern Indian Ocean

2020 ◽  
Vol 20 (11) ◽  
pp. 6841-6860 ◽  
Author(s):  
Jing Yang ◽  
Wanyu Zhao ◽  
Lianfang Wei ◽  
Qiang Zhang ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Indian Ocean ◽  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Photochemical Oxidation ◽  
Eastern Indian Ocean ◽  
The South ◽  
China Sea ◽  
Mass Ratios

Abstract. Marine aerosol samples collected from the South China Sea (SCS) to the eastern Indian Ocean (EIO) during a cruise from 10 March to 26 April 2015 were studied for diacids and related compounds. In view of air mass backward trajectories, source regions, and geographical features, the cruise area was categorized into the South China Sea (SCS), the eastern Indian Ocean off the coast of western Indonesia (EIO-WI), the EIO off the coast of Sri Lanka (EIO-SL), Malacca, and the Sri Lanka docking point (SLDP). Total concentrations of diacids, oxoacids, and α-dicarbonyls were high at the SLDP, followed by the SCS and Malacca, and they were the low in the EIO-WI. In this study, oxalic acid (C2) was the dominant diacid during the cruise, followed by malonic acid (C3) in the SCS, EIO-WI, EIO-SL, and Malacca, and succinic acid (C4) was relatively more abundant than C3 diacid at the SLDP. Except for SLDP, C3∕C4 mass ratios were always greater than 1, and no significant difference was observed during the cruise. The C2∕C4 and C2∕total diacid ratios also showed similar trends. The average mass ratios of adipic acid (C6) to azelaic acid (C9) were less than unity except for in the EIO-WI; the mass ratios of phthalic acid (Ph) to azelaic acid (C9) were less than 2 except for in the SCS. The concentrations of diacids were higher when the air masses originated from terrestrial regions than when they originated from remote oceanic regions. Based on the molecular distributions of organic acids, the mass ratios, and the linear correlations of selected compounds in each area, we found that the oxidation of biogenic volatile organic compounds (BVOCs) released from the ocean surface and subsequent in situ photochemical oxidation was the main contributor to diacids, oxocarboxylic acids, and α-dicarbonyls from the SCS to the EIO. In addition, the continental outflow, which is enriched in anthropogenic VOCs and their aged products, influenced the organic aerosol loading, particularly over the SCS. Emissions from Sri Lanka terrestrial vegetation as well as fossil fuel combustion and subsequent photochemical oxidation also played a prominent role in controlling the organic aerosol loading and the molecular distribution of diacids and related compounds at the SLDP.

A comparison study on primary production in typical low-latitude seas (South China Sea and Bay of Bengal)

2012 ◽  
Vol 32 (18) ◽  
pp. 5900-5906 ◽  
Author(s):  
刘华雪 LIU Huaxue ◽  
宋星宇 SONG Xingyu ◽  
黄洪辉 HUANG Honghui ◽  
谭烨辉 TAN Yehui ◽  
黄良民 HUANG Liangmin
Keyword(s):  
South China Sea ◽  
Primary Production ◽  
South China ◽  
Bay Of Bengal ◽  
Comparison Study ◽  
Low Latitude ◽  
China Sea
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