Gas hydrate occurrence on the Antarctic Peninsula, Antarctica

Title
Gas hydrate occurrence on the Antarctic Peninsula, Antarctica
Author(s)
진영근; M.W. Lee; 김예동; 남상헌; 김규중
Publication Year
2003-03-01
Abstract
On the multi-channel seismic profiles, Bottom Simulating Reflectors (BSRs) are widespread on the South Shetland continental margin, northern Antarctic Peninsula, implying existence of large volumes of gas hydrates. In order to estimate the volume of gas hydrate in the area, interval velocities were determined using a 1-D velocity inversion method and porosities were deduced from their relationship with sub-bottom depth for terrigenous sediments. Two baseline models were proposed for the velocities and porosities of non-gas-hydrate-bearing sediments in the area, considering the velocity jump observed at the shallow sub-bottom depth due to joint contributions of gas hydrate and a shallow unconformity. Based on the models, an average volume gas hydrate concentration was determined as 6.3 %. Assuming that gas hydrates exist only where BSRs are observed on the seismic profiles, the total volume of gas hydrates along the seismic profiles in the area is about 4.8´10 10 m3 (7.7 ´10 12 m3 volume of methane at standard temperature and pressure).
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32359
Bibliographic Citation
International Workshop on Gas Hydrate Studies and Related Topics, pp.3-1 - 3-4, 2003
Publisher
Kitami Institute of Technology, Japan
Type
Conference
Language
English
Publisher
Kitami Institute of Technology, Japan
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