Acoustic impedance properties of seafloor sediments off the coast of Southeastern Hainan, South China Sea

2018 ◽  
Vol 154 ◽  
pp. 1-7 ◽  
Author(s):  
Zhengyu Hou ◽  
Zhong Chen ◽  
Jingqiang Wang ◽  
Xufeng Zheng ◽  
Wen Yan ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Acoustic Impedance ◽  
China Sea ◽  
Seafloor Sediments

Sound speed structure models of seafloor sediments in the Southern South China Sea

2016 ◽  
Author(s):  
Jingqiang Wang ◽  
Guozhong Han ◽  
Qiuhong Xie ◽  
Changsheng Guo ◽  
Zhengyu Hou ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Sound Speed ◽  
Southern South China Sea ◽  
China Sea ◽  
Seafloor Sediments ◽  
Sound Speed Structure

Acoustic characteristics of seafloor sediments in the abyssal areas of the South China Sea

2018 ◽  
Vol 156 ◽  
pp. 93-100 ◽  
Author(s):  
Zhengyu Hou ◽  
Zhong Chen ◽  
Jingqiang Wang ◽  
Xufeng Zheng ◽  
Wen Yan ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
The South China Sea ◽  
The South ◽  
Acoustic Characteristics ◽  
China Sea ◽  
Seafloor Sediments

Gas hydrate saturation from acoustic impedance and resistivity logs in the Shenhu area, South China Sea

2011 ◽  
Vol 28 (9) ◽  
pp. 1625-1633 ◽  
Author(s):  
Xiujuan Wang ◽  
Shiguo Wu ◽  
Myung Lee ◽  
Yiqun Guo ◽  
Shengxiong Yang ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Acoustic Impedance ◽  
Shenhu Area ◽  
China Sea ◽  
Resistivity Logs ◽  
Hydrate Saturation

scholarly journals Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Xiujuan Wang ◽  
Shiguo Wu ◽  
Yiqun Guo ◽  
Shengxiong Yang ◽  
Yuehua Gong
Keyword(s):  
South China Sea ◽  
South China ◽  
Gas Hydrate ◽  
Acoustic Impedance ◽  
Low Frequency ◽  
P Wave ◽  
Seismic Profiles ◽  
Submarine Canyons ◽  
China Sea ◽  
Baiyun Sag

Gas hydrate drilling results show that gas hydrate has a close relationship with strong bottom-simulating reflectors (BSRs) identified from seismic data in the Baiyun sag, South China Sea. The BSRs observed on seismic profiles at the crests of submarine canyons indicate the likely existence of gas hydrate. We calculate the acoustic impedance using constrained sparse spike inversion (CSSI), the interval velocity, and the seismic reflection characteristics such as reflection strength, instantaneous frequency, blanking, and enhanced reflection to demonstrate the presence of gas hydrate. Higher acoustic impedance and P-wave velocity were identified above the BSR. A remarkable low impedance, low frequency, and acoustic blanking indicated the presence of gas below gas hydrate stability zone. The occurrence of gas hydrate at the crests of canyons suggests that the abundance of gas hydrate in Baiyun sag may be due to the migrating submarine canyons providing the structural reliefs and the topographic ridges.

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