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First Images and Orientation of Fine Structure from a 3-d Seismic Oceanography Data Set : Volume 6, Issue 2 (20/04/2010)

By Blacic, T. M.

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Book Id: WPLBN0004020451
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: First Images and Orientation of Fine Structure from a 3-d Seismic Oceanography Data Set : Volume 6, Issue 2 (20/04/2010)  
Author: Blacic, T. M.
Volume: Vol. 6, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Holbrook, W. S., & Blacic, T. M. (2010). First Images and Orientation of Fine Structure from a 3-d Seismic Oceanography Data Set : Volume 6, Issue 2 (20/04/2010). Retrieved from http://worldlibrary.net/


Description
Description: University of Wyoming, Geology and Geophysics Department, 1000 E. University Ave., Laramie, WY 82071, USA. We present 3-D images of ocean fine structure from a unique industry-collected 3-D multichannel seismic dataset from the Gulf of Mexico that includes expendable bathythermograph casts for both swaths. 2-D processing reveals strong laterally continuous reflections throughout the upper ~800 m as well as a few weaker but still distinct reflections as deep as ~1100 m. We interpret the reflections to be caused by reversible fine structure from internal wave strains. Two bright reflections are traced across the 225-m-wide swath to produce reflection surface images that illustrate the 3-D nature of ocean fine structure. We show that the orientation of linear features in a reflection can be obtained by calculating the orientations of contours of reflection relief, or more robustly, by fitting a sinusoidal surface to the reflection. Preliminary 3-D processing further illustrates the potential of 3-D seismic data in interpreting images of oceanic features such as internal wave strains. This work demonstrates the viability of imaging oceanic fine structure in 3-D and shows that, beyond simply providing a way visualize oceanic fine structure, quantitative information such as the spatial orientation of features like fronts and solitons can be obtained from 3-D seismic images. We expect complete, optimized 3-D processing to improve both the signal to noise ratio and spatial resolution of our images resulting in increased options for analysis and interpretation.

Summary
First images and orientation of fine structure from a 3-D seismic oceanography data set

Excerpt
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