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The quest for the perfect gravity anomaly: Part 1 - New calculation standards

SEG Technical Program Expanded Abstracts

By:
, , , , ,
DOI: 10.1190/1.2370391

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Abstract

The North American gravity database together with databases from Canada, Mexico, and the United States are being revised to improve their coverage, versatility, and accuracy. An important part of this effort is revision of procedures and standards for calculating gravity anomalies taking into account our enhanced computational power, modern satellite-based positioning technology, improved terrain databases, and increased interest in more accurately defining different anomaly components. The most striking revision is the use of one single internationally accepted reference ellipsoid for the horizontal and vertical datums of gravity stations as well as for the computation of the theoretical gravity. The new standards hardly impact the interpretation of local anomalies, but do improve regional anomalies. Most importantly, such new standards can be consistently applied to gravity database compilations of nations, continents, and even the entire world. ?? 2005 Society of Exploration Geophysicists.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The quest for the perfect gravity anomaly: Part 1 - New calculation standards
Series title:
SEG Technical Program Expanded Abstracts
DOI:
10.1190/1.2370391
Volume
25
Issue:
1
Year Published:
2006
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
859
Last page:
863
Number of Pages:
5