High-resolution radar mapping of internal layers at NGRIP

S. Prasad Gogineni; P. Kanagaratnam; Neils Gundestrup; Lars Larsen

doi:10.1117/12.383564

27 April 2000 High-resolution radar mapping of internal layers at NGRIP

S. Prasad Gogineni, P. Kanagaratnam, Neils Gundestrup, Lars Larsen

Proceedings Volume 4084, Eighth International Conference on Ground Penetrating Radar; (2000) https://doi.org/10.1117/12.383564
Event: 8th International Conference on Ground Penetrating Radar, 2000, Gold Coast, Australia

Abstract

A major goal of NASA's Office of Earth Science Polar Program is to determine the mass balance of the Greenland and Antarctic ice sheets. A key variable in assessing the mass balance of an ice sheet is accumulation rate. Currently, accumulation rate is determined from ice cores and pits. There are large uncertainties in existing accumulation rate maps derived from sparely distributed ice cores and pits. There is an urgent need for developing remote sensing techniques for determining the accumulation rate. A prototype Frequency Modulated Continuous Wave (FMCW) radar system has been developed for mapping internal layers from known volcanic events in the ice. The prototype system has been designed and developed using the latest RF technologies. The system was operated from 100 to 2000 MHz, for imaging the top 200 meters of ice with high resolution. We tested this system during the 1998 and 1999 surface experiments at the North GReenland Ice core Project (NGRIP) ice camp. Our results show that internal layers were successfully mapped with high resolution down to 200 m.

Citation Download Citation

S. Prasad Gogineni, P. Kanagaratnam, Neils Gundestrup, and Lars Larsen "High-resolution radar mapping of internal layers at NGRIP", Proc. SPIE 4084, Eighth International Conference on Ground Penetrating Radar, (27 April 2000); https://doi.org/10.1117/12.383564

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