Interannual and long-term sea level variability in the eastern Indian Ocean and South China Sea

2017 ◽  
Vol 50 (9-10) ◽  
pp. 3195-3217
Author(s):  
Soumya Mohan ◽  
P. Vethamony
Keyword(s):  
Indian Ocean ◽  
South China Sea ◽  
Sea Level ◽  
South China ◽  
Eastern Indian Ocean ◽  
Sea Level Variability ◽  
China Sea

A study of sea level variability and its long-term trend in the South China Sea

2016 ◽  
Vol 35 (9) ◽  
pp. 22-33 ◽  
Author(s):  
Ying Xu ◽  
Mingsen Lin ◽  
Quan’an Zheng ◽  
Qingtao Song ◽  
Xiaomin Ye
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Sea Level Variability ◽  
Term Trend ◽  
China Sea ◽  
Long Term Trend

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.

scholarly journals Statistical estimations of atmospheric duct over the South China Sea and the tropical eastern Indian Ocean

2013 ◽  
Vol 58 (23) ◽  
pp. 2794-2797 ◽  
Author(s):  
XiaoFeng Zhao ◽  
DongXiao Wang ◽  
SiXun Huang ◽  
Ke Huang ◽  
Ju Chen
Keyword(s):  
Indian Ocean ◽  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
Eastern Indian Ocean ◽  
The South ◽  
China Sea ◽  
Atmospheric Duct ◽  
Statistical Estimations

Interannual sea level variability in the South China Sea and its response to ENSO

2007 ◽  
Vol 55 (4) ◽  
pp. 257-272 ◽  
Author(s):  
Zengrui Rong ◽  
Yuguang Liu ◽  
Haibo Zong ◽  
Yongcun Cheng
Keyword(s):  
South China Sea ◽  
Sea Level ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Sea Level Variability ◽  
China Sea

scholarly journals Reidentification of Decapterus macarellus and D. macrosoma (Carangidae) reveals inconsistencies with current morphological taxonomy in China

ZooKeys ◽  
2020 ◽  
Vol 995 ◽  
pp. 81-96
Author(s):  
Liyan Zhang ◽  
Jing Zhang ◽  
Puqing Song ◽  
Shigang Liu ◽  
Pan Liu ◽  
...  
Keyword(s):  
Indian Ocean ◽  
South China Sea ◽  
Cryptic Species ◽  
South China ◽  
Posterior Margin ◽  
The South China Sea ◽  
Reference Points ◽  
Eastern Indian Ocean ◽  
The South ◽  
China Sea

Decapterus macarellus and D. macrosoma are economically important pelagic fish species that are widely distributed in tropical and subtropical seas. The two species are often mistakenly identified due to their morphological similarities as described in the Chinese literature on fish identification. In this study, D. macarellus and D. macrosoma samples were collected in the Eastern Indian Ocean and the South China Sea and reidentified using morphological and DNA barcoding techniques. The characteristics that distinguish the two species primarily include the scute coverage of the straight portion of the lateral line (the most indicative characteristic for classification), the shape of the predorsal scaled area and its location relative to the middle axis of the eye, and the shapes of the posterior margin of the maxilla and the posterior margin of the operculum. The results revealed a large number of misidentified sequences among the homologous cytochrome oxidase (COI) sequences of the two species in the NCBI database and that the genus Decapterus may include cryptic species. In terms of genetic structure, the Sundaland has not blocked genetic exchange between D. macarellus populations in the South China Sea and the Eastern Indian Ocean, giving rise to a high level of genetic diversity. In this study, we made corrections to the Chinese classification standards for D. macarellus and D. macrosoma and the erroneous reference sequences in the NCBI database, thereby providing accurate reference points for the future exploration of cryptic species in the genus Decapterus.

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