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ADMAP-2: a new generation international magnetic anomaly compilation project to aid Antarctic geosciences (public)
Convener: Fausto Ferraccioli 
Thu, 01 May, 13:30–15:00

Antarctica is a keystone for global studies of the Gondwana, Rodinia and Columbia supercontinents. An improved understanding of Antarctic geology is also required to enhance our knowledge of geological controls on the evolution, dynamics and long-term stability of Antarctic ice sheets.

Given the extensive ice, snow and marine cover, magnetic surveying is the most cost-effective tool for expanding our knowledge of Antarctic geology. ADMAP 1 (Antarctic Digital Magnetic Anomaly Project) was the first international magnetic anomaly compilation of Antarctica and was completed in 2001 (Golynsky et al., 2001), six years after its first launch in 1995. The new magnetic anomaly compilation provided tantalizing insights into the structure and evolution of Antarctica, including its Proterozoic-Archaean cratons, Proterozoic-Palaeozoic mobile belts, Palaeozoic-Cenozoic magmatic arc systems, continental rift systems and rifted margins, large igneous provinces and the surrounding oceanic gateways.

Since the production of this magnetic anomaly map, the international geomagnetic community has been very active, and has acquired more than 1.5 million line-km of new air- and shipborne data. In particular, the increased international dimension of magnetic surveying has enabled several major previously largely unexplored Antarctic frontiers to be investigated.

To initiate the production of the next generation magnetic anomaly map and database for the Antarctic south of 60S, an international ADMAP-2 steering committee was formed, which met for the first time at the Korean Polar Research Institute (KOPRI) in August 2013.

Here we propose to review the status of the new ADMAP-2 project with the broader community involved in Antarctic geomagnetic studies. We propose to discuss: high-priority regional compilations for which the datasets are already available; how to engage more with international stakeholders and data owners that have yet to release their data; re-assess the roadmap, milestones. timelines and products to be delivered by ADMAP-2; discuss the techniques to be used; how to continue enhancing the geological utility of Antarctic magnetic surveys; how to ensure timely contributions for the next generation World Digital Magnetic Anomaly Map; how to help foster and launch new international magnetic anomaly surveys and strengthen interdisciplinary links with other Antarctic geosciences communities.