Operating ice-penetrating radars on GVs in Antarctica to improve climate and sea level change characteristics: ANTHALO as a multinational approach


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Olaf.Eisen [ at ] awi.de

Abstract

Antarctica and the Antarctic ice sheet are a major component of the Earth system. To reliably answer current scientific questions it is necessary to obtain full coverage of primary parameters on continental scales. To date, successful achievement of this coverage has been limited because of the range of available airborne platforms. With its long-range capabilities, HALO is the distinguished platform to close polar gaps of various parameters. Considering glaciological characteristics, with such data sets it would become possible to tackle the following issues: − to complete mapping of bed topography and basal properties in East Antarctica to improve ice-dynamic boundary conditions and constrains for future changes in view of ice-sheet stability and sea level change − to derive bottom melt rates of ice shelves, which dominate ice mass loss, especially in so far neglected areas − to determine snow accumulation and changes thereof in Antarctic key basins, which have yet been out of reach for spatial mapping − to determine present age distribution (isochrone architecture) of East Antarctica to reconstruct past ice dynamics − to identify regions with a potentially intact stratigraphy to recover a 1.5 Ma old ice core to constrain the search for Oldest Ice. With a dedicated commitment, such a mission could complete the long-needed full coverage of Antarctica by joint operations of the available Gulfstream V airplanes from DLR and NASA. Implementation would require adaptation of available survey instrumentation to HALO, e.g. high-performance ultrawideband radars, preferably in the L-band range. Besides an emphasis on Antarctic topics, a ANTHALO mission with such instrumentation would provide a benefit for other disciplines and projects as well, e.g. ground-truthing for a possible Tandem-L satellite Cal/Val mission, instrumentation and application to improve observation of soil moisture, seasonal snow cover and sea-ice properties, and synergies for determining atmospheric properties. Our presentation will give an overview of possible mission concepts, the framework of international collaboration and cooperation, envisaged instrumentation requirements and intersections to other disciplines.



Item Type
Conference (Talk)
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Not peer-reviewed
Publication Status
Published
Event Details
1stHALO Symposium: Airborne Research with HALO: Achievements and Prospects, 14 Mar 2017 - 16 Mar 2017, DLR-Oberpfaffenhofen, Germany.
Eprint ID
44221
Cite as
Eisen, O. , Binder, T. , Yan, J. , O'Neill, C. and Giogineni, P. (2017): Operating ice-penetrating radars on GVs in Antarctica to improve climate and sea level change characteristics: ANTHALO as a multinational approach , 1stHALO Symposium: Airborne Research with HALO: Achievements and Prospects, DLR-Oberpfaffenhofen, Germany, 14 March 2017 - 16 March 2017 .


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