The U.S. National Science Foundation has agreed to support the development of a next-generation gravity map of Antarctica (ADGRAV - Antarctic Digital Gravity Synthesis). NSF funding will cover the development of a Web-based access tool and the entry of data as it becomes available. Although this concept is targeted at the gravity field of Antarctica, it will be closely coordinated with ADMAP and BEDMAP as well as SCAR. The goal of this project is to develop an on-line Antarctic gravity database which will facilitate access to improved high resolution satellite gravity models, in conjunction with shipboard, airborne, and land-based gravity measurements for the continental regions.

The ADGRAV compilation will provide an important new tool to the Antarctic Earth science community, from the geologist needing to place field observations in a regional context to the seismologist studying continental scale mantle structure. ADGRAV will complement the parallel projects underway to develop new continental bedrock (BEDMAP) and magnetic (ADMAP) maps of Antarctica. An international effort will parallel these ongoing projects in contacting the Antarctic geophysical community, identifying existing data sets, agreeing upon protocols for the use of data contributed to the database and finally assembling a new continental scale gravity map. The SCAR Solid Earth Geophysics Working Group offered general support for the ADGRAV concept as an outgrowth of ADMAP during the SCAR meeting in Conception, Chile in July 1998.

United States
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