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The newly developed airborne radio-echo sounding system of the AWI as a glaciological tool

  • U. Nixdorf (a1), D. Steinhage (a1), U. Meyer (a1), L. Hempel (a1), M. Jenett (a2), P. Wachs (a3) and H. Miller (a1)...

Abstract

Since 1994 the Alfred Wegener Institute (AWI) has operated an airborne radio-echo sounding system for remote-sensing studies of the polar ice caps in Antarctica and in Greenland. It is used to map ice thicknesses and internal layernigs of glaciers, ice sheets and ice shelves, and is capable of penetrating ice thicknesses of up to 4 km. The system was designed and built by AWI in cooperation with Aerodata Flugmeßtechnik GmbH, Technische Umversitat Hamburg-Harburg and the Deutsches Zentrum fur Luft- und Raumfahrt e.V. The system uses state-of-the-art techniques, and results in high vertical (5 m) as well as along-track (3.25 m) resolution. The radar signal is a 150 MHz burst with a duration of 60 or 600 ns. The peak power is 1.6 kW, and the system sensitivity is 190 dB. The short backfire principle has been adopted and optimized for antennae used on Polar2, a Dormer 228-100 aircraft, resulting in an antenna gain of 14 dB each. Digital data recording allows further processing. The quality of the recorded data can be monitored on screen and as online analogue plots during the flight.

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References

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Bell, R. E. and 6 others. 1998. Influence of subglacial geology on the onset of a West Antarctic ice stream from aerogeophysical observations. Nature, 394(6688), 58-62.
Bentley, C. R. 1998. Ice on the fast track. Nature, 394(6688), 21-22.
Blindow, N. 1986. Bestimmung der Machtigkeit und des inneren Aufbaus von Schelfeis und temperierten Gletschern mit einem hochauflosenden elektromagnetischen Reflexionsverfahren. (Ph.D. thesis, Westfalische Wilhelms-Universitat Munster.)
Bogorodsky, V.V., Bentley, C. R. and Gudmandsen, P. E.. 1985. Radioglaciology. Dordrecht, etc, D. Reidel Publishing Co.
Dahl-Jensen, D. and 9 others. 1997. A search in north Greenland for a new ice-core drill site. J. Glacial, 43(144), 300-306.
Drewry, D.J., ed. 1983. Antarctica: glaciological and geophysical folio. Cambridge, University of Cambridge. Scott Polar Research Institute.
Gogineni, S., Chuah, T., Allen, C., Jezek, K. and Moore, R.K.. 1998. An improved coherent radar depth sounder. J. Glacial, 44(148), 659-669.
GRIP Project Members. 1993. Climate instability during the last interglacial period recorded in the GRIP ice core. Nature, 364(6434), 203-207.
Grootes, P. M., Stuiver, M., White, J.W. C., Johnsen, S. and Jouzel, J.. 1993. Comparison of oxygen isotope records from the GISP2 and GRIP Greenland ice cores. Nature, 366(6455), 552-554.
Hempel, L. and Thyssen, F.. 1993. Deep radio echo soundings in the vicinity of GRIP and GISP2 drill sites, Greenland. Polarforschung, 62(1), 1992, 11-16.
Hodge, S. M, Wright, D.L., Bradley, J. A., Jacobel, R.W., Skou, N. and Vaughn, B.. 1990. Determination of the surface and bed topography in central Greenland. J. Glacial, 36(122), 17-30.
Hoppe, H. and Thyssen, F.. 1988. Ice thickness and bedrock elevation in western Neuschwabenland and Berkner Island, Antarctica. Ann. Glaciol, 11, 42-45.
Huybrechts, P. 1994. Formation and disintegration of the Antarctic ice sheet. Ann. Glaciol., 20, 336-340.
Huybrechts, P. and Oerlemans, J.. 1990. Response of the Antarctic ice sheet to future greenhouse warming. Climate Dyn., 5(2), 93-102.
Lambrecht, A. 1998. Untersuchungen zu Massenhaushalt und Dynamik des Ronne Ice Shelfs, Antarktis. Ber. Polarforsch. 265.
Lambrecht, A., Mayer, C., Hempel, L., Nixdorf, U. and Oerter, H.. 1997. Glaciological investigations in the grounding line area of the Foundation Ice Stream, Antarctica. Polarforschung, 65(1), 1995,15-25.
Lambrecht, A., Mayer, C., Oerter, H. and Nixdorf, U.. 1999. Investigations of the mass balance of the southeastern Ronne Ice Shelf, Antarctica. Ann. Glacial, 29 (see paper in this volume).
Nereson, N. A ., Waddington, E. D., Raymond, C. F and Jacobson, H. P.. 1996. Predicted age-depth scales for Siple Dome and inland WAIS ice cores in West Antarctica. Geophys. Res. Lett., 23(22), 3163-3166.
Oerter, H., Graf, W., Wilhelms, F, Minikin, A. and Miller, H.. 1999. Accumulation studies on Amundsenisen, Dronning Maud Land, Antarctica, by means of tritium, DEP and stable-isotope measurements: first results from the 1995-96 and 1996-97 field seasons. Ann. Glacial, 29 (see paper in this volume).
Rothammel, K. 1991. Antennenbuch. Stuttgart, Franckh-Kosmos Verlag GmbH and Co.
Steinhage, D., Nixdorf, U., Meyer, U. and Miller, H.. 1999. New maps of the ice thickness and subglacial topography in Dronning Maud Land, Antarctica, determined by means of airborne radio-echo sounding. Ann. Glacial, 29 (see paper in this volume).
Thyssen, F 1988. Special aspects of the central part of Filchner-Ronne Ice Shelf, Antarctica. Ann. Glacial, 11, 173-179.
Ulaby, F. T., Moore, R. K. and Fung, A. K.. 1982. Microwave remote sensing, active and passive. Val 2. Radar remote sensing and surface scattering and emission theory. Reading, MA, Addison-Wesley Publishing Co.
Waite, A. H. Jr. 1959. Ice depth soundings with ultra high frequency radio waves in the Arctic and Antarctic, and some observed over ice altimeters errors. Fort Monmouth, NJ, U.S. Army. Signal Research and Development Laboratory. (Technical report 2092.)
Waite, A. H. and Schmidt, S. J.. 1962. Gross errors in height indication from pulsed radar altimeters operating over thick ice or snow. Proc. IRE, 50(6), 1515-1520.

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