A bottom simulating reflector on the South Shetland margin, Antarctic Peninsula

Multichannel seismic data acquired over the northern Pacific margin of the Antarctic Peninsula, have shown the presence of high-amplitude sub-bottom reflections across part of the South Shetland accretionary prism. Detailed seismic data analysis, such as true amplitude signal recovery, reflection co...

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Bibliographic Details
Published in:Antarctic Science
Main Authors: Lodolo, E., Camerlenghi, A., Brancolini, G.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1993
Subjects:
Geology
Ecology, Evolution, Behavior and Systematics
Oceanography
Antarctic
The Antarctic
Antarctic Peninsula
Pacific
Antarc*
Antarctic Science
Methane hydrate
Online Access:http://dx.doi.org/10.1017/s0954102093000264
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102093000264
Description
Summary:Multichannel seismic data acquired over the northern Pacific margin of the Antarctic Peninsula, have shown the presence of high-amplitude sub-bottom reflections across part of the South Shetland accretionary prism. Detailed seismic data analysis, such as true amplitude signal recovery, reflection coefficient determinations and closely-spaced semblance velocity analysis, have been carried out in order definitely to assign this bottom simulating reflector to the base of the stability field for methane hydrate. This represents the first evidence of gas hydrate layers in the Antarctic Peninsula region.

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