Gas hydrate volume estimations on the South Shetland continental margin, Antarctic Peninsula SCIE SCOPUS

Cited 19 time in WEB OF SCIENCE Cited 8 time in Scopus
Title
Gas hydrate volume estimations on the South Shetland continental margin, Antarctic Peninsula
Author(s)
Jin, YK; Lee, MW; Kim, Y; Nam, SH; Kim, KJ
Alternative Author(s)
남상헌; 김규중
Publication Year
2003-06
Abstract
Multi-channel seismic data acquired on the South Shetland margin, northern Antarctic Peninsula, show that Bottom Simulating Reflectors (BSRs) are widespread in the area, implying 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. Because data such as well logs are not available, we made two baseline models 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. The difference between the results of the two models is not significant. The parameters used to estimate the total volume of gas hydrate in the study area were 145 kin of total length of BSRs identified on seismic profiles, 350 in thickness and 15 km width of gas hydrate-bearing sediments, and 6.3% of the average volume gas hydrate concentration (based on the second baseline model). Assuming that gas hydrates exist only where BSRs are observed, the total volume of gas hydrates along the seismic profiles in the area is about 4.8 x 10(10) m(3) (7.7 x 10(12) m(3) volume of methane at standard temperature and pressure).
ISSN
0954-1020
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5499
DOI
10.1017/S0954102003001275
Bibliographic Citation
ANTARCTIC SCIENCE, v.15, no.2, pp.271 - 282, 2003
Publisher
CAMBRIDGE UNIV PRESS
Keywords
baseline models; bottom simulating reflector; seismic data; unconformity; volume estimation
Type
Article
Language
English
Document Type
Article
Publisher
CAMBRIDGE UNIV PRESS
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse