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.
|Title of host publication||Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006|
|Number of pages||5|
|State||Published - 2018|
|Event||Society of Exploration Geophysicists International Exposition and 76tth Annual Meeting 2006, SEG 2006 - New Orleans, United States|
Duration: Oct 1 2006 → Oct 6 2006
|Name||Society of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006|
|Conference||Society of Exploration Geophysicists International Exposition and 76tth Annual Meeting 2006, SEG 2006|
|Period||10/1/06 → 10/6/06|
Bibliographical notePublisher Copyright:
© 1996-2018 Society of Exploration Geophysicists. All rights reserved.
ASJC Scopus subject areas