文献类型：期刊文献

中文题名：Numerical simulation of bubble plumes in overlying water of gas hydrate in the cold seepage active region

英文题名：Numerical simulation of bubble plumes in overlying water of gas hydrate in the cold seepage active region

作者：Li CanPing[1];Liu XueWei[2];Gou LiMin[3];Wang XiangChun[2];Yin JunJie[4];Xie ChengLiang[2]

机构：[1]Guangdong Ocean Univ, Lab Ocean Remote Sensing & Informat Technol, Zhanjiang 524088, Peoples R China;[2]China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China;[3]China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China;[4]China United Coalbed Methane Natl Engn Res Ctr Lt, Beijing 100095, Peoples R China

年份：2013

卷号：56

期号：4

起止页码：579

中文期刊名：Science China Earth Sciences

外文期刊名：SCIENCE CHINA-EARTH SCIENCES

收录：SCI-EXPANDED(收录号：WOS:000317347200008)、、EI(收录号：20131616208771)、Scopus(收录号：2-s2.0-84875970492)、WOS

基金：We especially thank the reviewers for many constructive comments on improving an earlier version of this paper. We also express our gratitude to Wang Xiujuan, Yang Mengmeng, Li Ying, He Jing, and Wang Jun for their helpful suggestions on improving the English version of this paper. This work was supported by National Basic Research Program of China (Grant No. 2009CB219505), Program for Science and Technology Development of Zhanjiang (Grant No. 2011C3107006) and the Talents Introduction Special Project of Guangdong Ocean University (Grant No. 0812182).

语种：英文

中文关键词：gas hydrate; plume; cold seepage; scattered wave; numerical simulation

外文关键词：gas hydrate; plume; cold seepage; scattered wave; numerical simulation

中文摘要：To study the seismic responses produced by gas hydrate bubble plumes in the cold seepage active region, we constructed a plume water body model based on random medium theory and acoustic velocity model of bubble medium. The plume water body model was forward simulated by finite difference. Seismic records of single shot show the scattered waves produced by the plume. The scattered wave energy is strong where the plume exists. Where the scattered wave energy is stronger, the minimum of travel time is always above the plume, which has no relationship with the shot's position. Seismic records of shot gathers were processed by prestack time migration. The migration section shows that the scattered waves produced by plumes can be imaged distinctly with higher accuracy. These researches laid a foundation for further study on the seismic responses produced by plumes and provided a new approach for the identification of gas hydrate.

外文摘要：To study the seismic responses produced by gas hydrate bubble plumes in the cold seepage active region, we constructed a plume water body model based on random medium theory and acoustic velocity model of bubble medium. The plume water body model was forward simulated by finite difference. Seismic records of single shot show the scattered waves produced by the plume. The scattered wave energy is strong where the plume exists. Where the scattered wave energy is stronger, the minimum of travel time is always above the plume, which has no relationship with the shot's position. Seismic records of shot gathers were processed by prestack time migration. The migration section shows that the scattered waves produced by plumes can be imaged distinctly with higher accuracy. These researches laid a foundation for further study on the seismic responses produced by plumes and provided a new approach for the identification of gas hydrate.