scholarly journals Analysis of sea condition of Jiaolong deep-sea manned submersible operating in the South China Sea

2021 ◽  
Vol 276 ◽  
pp. 01022
Author(s):  
Liu Xiaohui ◽  
Qin Shengjie ◽  
Yang Lei ◽  
Qi Haibin ◽  
Zhang Qi
Keyword(s):  
South China Sea ◽  
South China ◽  
Deep Sea ◽  
Operating Time ◽  
Scientific Investigation ◽  
The South China Sea ◽  
Design Parameters ◽  
The South ◽  
China Sea ◽  
Manned Submersible

The South China Sea is the sea area with the largest area, the largest depth, the most abundant oil and gas resources and the most comprehensive biological species in China. The further exploration of the South China Sea with manned submersible and other major deep-sea equipment is of great significance to China's deep-sea scientific investigation. In this paper, Jiaolong manned submersible was taken as an example. In order to explore the operation window to guarantee the operation safety of manned submersible and improve the efficiency of voyage scientific investigation, this paper combined the global wave return data and the wave data based on satellite remote sensing to focus on the Marine environment characteristics in the South China Sea. According to the operational design parameters of Jiaolong, in the South China Sea, the most appropriate operating time window is from April to September, and the rest of the time, proper sea conditions should be selected for the operation.

Deep-sea geohazards in the South China Sea

2018 ◽  
Vol 17 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Shiguo Wu ◽  
Dawei Wang ◽  
David Völker
Keyword(s):  
South China Sea ◽  
South China ◽  
Deep Sea ◽  
The South China Sea ◽  
The South ◽  
China Sea

First record of the rare stenopodidean shrimp Odontozona spongicola (Alcock & Anderson, 1899) (Decapoda: Stenopodidea: Stenopodidae) from Indonesia

Zootaxa ◽  
2021 ◽  
Vol 4915 (4) ◽  
pp. 575-584
Author(s):  
CHIEN-LIN CHEN ◽  
TIN-YAM CHAN
Keyword(s):  
South China Sea ◽  
South China ◽  
Rare Species ◽  
Deep Sea ◽  
New Record ◽  
First Record ◽  
The South China Sea ◽  
The South ◽  
China Sea

The stenopodidean shrimp Odontozona spongicola (Alcock & Anderson, 1899) collected by the South Java Deep-Sea Biodiversity Expedition 2018 (SJADES 2018) is a new record from Indonesia. The specimen of O. spongicola recently listed from the South China Sea is also formally reported here in. The characteristcs and coloration of this rare species are described and illustrated. 

Microplastic ingestion in deep-sea fish from the South China Sea

2019 ◽  
Vol 677 ◽  
pp. 493-501 ◽  
Author(s):  
Lin Zhu ◽  
Hao Wang ◽  
Bijuan Chen ◽  
Xuemei Sun ◽  
Keming Qu ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Deep Sea ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Sea Fish

scholarly journals Structure and Composition of Micro-Manganese Nodules in Deep-Sea Carbonate from the Zhaoshu Plateau, North of the South China Sea

Minerals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1016
Author(s):  
Hengchao Xu ◽  
Xiaotong Peng ◽  
Kaiwen Ta ◽  
Taoran Song ◽  
Mengran Du ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Deep Sea ◽  
Carbonate Rocks ◽  
The South China Sea ◽  
Coralline Algae ◽  
Manganese Nodules ◽  
The South ◽  
Raman Spectrometry ◽  
China Sea

The occurrence of deep-sea ferromanganese nodules and crusts on the seafloor is widespread, providing an important resource for numerous metals such as Ni, Co, and Cu. Although they have been intensively studied in the past, the formation of micro-manganese nodules within carbonate rocks has received less attention, despite the considerable amounts of manganese released from the dissolution of the calcareous framework. The micro-petrographic and geochemical characteristics of reef carbonate rocks recovered from the Zhaoshu plateau in the Xisha uplift, north of the South China Sea, were studied using optical microscopy, scanning electron microscopy, confocal Raman spectrometry, and an electron probe micro-analyzer. The carbonate rocks are composed of biogenic debris, including frameworks of coralline algae and chambers of foraminifer, both of which are suffering strong micritization. Within the calcite micrite, numerous micro-manganese nodules were identified with laminated patterns. Mineral and elemental evidence showed that the Mn oxides in the carbonates are mixed with 10 Å vernadite, 7 Å vernadite and todorokite, both of which are closely associated with the carbonate matrix. The micro-nodules were found to have high Mn/Fe ratios, enriched in Ni and Cu and depleted in Co. We infer that theses nodules are mixed type with early diagenetic growth under oxic–suboxic conditions. The re-distribution of manganite within the rocks is likely influenced by micritization of the calcareous framework. We deduce that microbial-associated reduction of manganite induces the formation of diagenetic todorokite similar to nodules buried in marine sediments.

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