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Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea
Joint Authors
Wang, Xiujuan
Gong, Yuehua
Yang, Shengxiong
Wu, Shiguo
Guo, Yiqun
Source
Journal of Geological Research
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-17
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Earth Science , Water and Environment
Abstract EN
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.
American Psychological Association (APA)
Wang, Xiujuan& Wu, Shiguo& Guo, Yiqun& Yang, Shengxiong& Gong, Yuehua. 2011. Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea. Journal of Geological Research،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-465739
Modern Language Association (MLA)
Wang, Xiujuan…[et al.]. Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea. Journal of Geological Research No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-465739
American Medical Association (AMA)
Wang, Xiujuan& Wu, Shiguo& Guo, Yiqun& Yang, Shengxiong& Gong, Yuehua. Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea. Journal of Geological Research. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-465739
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-465739