Publication Date

1986

Document Type

Dissertation/Thesis

First Advisor

Ervin, C. Patrick

Degree Name

M.S. (Master of Science)

Department

Department of Geology

LCSH

Marine geophysics--Data processing||Seismic refraction method--Data processing

Abstract

Conventional reflection seismic surveys contain both reflected and refracted data. During analysis the refracted data are usually ignored. These data contain valuable information about the seafloor and the upper part of the sediments. A basic method for this type of analysis was developed by C.P. Ervin and others in 1983. This study improves on this method by development of a computer algorithm for: 1) determination of arrival times of the refracted waves, 2) correction for dipping beds, 3) compensation for the offset of the refractor location from the ship's position, and 4) providing a contoured, velocity cross-section that may be readily interpreted. The speed of this technique permits time for analysis rather than calculation as is the case in traditional, manual methods. As an example, a profile crossing Georges Bank, northwest Atlantic Ocean, is examined using the automated method of analysis, thus demonstrating the utility of the applications cited above.

Comments

Bibliography:pages [64]-65.

Extent

65 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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