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

Xiong Li, Thomas G. Hildenbrand, William J. Hinze, G. Randy Keller, Dhananjay Ravat, Michael Webring

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish
Pages (from-to)859-863
Number of pages5
JournalSEG Technical Program Expanded Abstracts
Volume25
Issue number1
DOIs
StatePublished - Jan 2006

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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