VELOCITY STRUCTURE OF A GAS HYDRATE REFLECTOR

被引：229

作者：

SINGH, SC ^{[1
]}

MINSHULL, TA ^{[1
]}

SPENCE, GD ^{[1
]}

机构：

[1] UNIV VICTORIA,SCH OCEAN & EARTH SCI,VICTORIA V8W 2YZ,BC,CANADA

来源：

SCIENCE | 1993年 / 260卷 / 5105期

关键词：

D O I：

10.1126/science.260.5105.204

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Seismic reflection profiles across many continental margins have imaged bottom-simulating reflectors (BSRs) parallel to the seabed; these are often interpreted as the base of a zone in which methane hydrate ''ice'' is stable. Waveform inversion of seismic reflection data can be used to estimate from seismic data worldwide the velocity structure of a BSR and its thickness. A test of this method at a drill site of the Ocean Drilling Program predicts that sediment pores beneath the BSR contain free methane for approximately 30 meters. The hydrate and underlying gas represent a large global reservoir of methane, which may have economic importance and may influence global climate.

引用

页码：204 / 207

页数：4

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