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Communication Dans Un Congrès Année : 2011

High density coverage investigation of The Austre LovénBreen (Svalbard) using Ground Penetrating Radar

Résumé

A three week field survey over April 2010 allowed for the acquisition of 120 Ground Penetrating Radar (GPR) profiles, adding to a 40 km long walk across an Arctic glacier. The profiles were acquired using a Mal°a equipment with 100 MHz antennas, walking slowly enough to record a 2.224 s trace every 30 cm on the average. Some acquisitions were repeated with 50 MHz or 200 MHz antenna to improve data quality. The GPR was coupled to a GPS system to position traces. Each profile has been manually edited using standard GPR data processing, to pick the reflection arrival time from the ice-bedrock interface. Traveltimes were converted to ice thickness using a velocity of 0.17 m/ns. Dual-frequency GPS mapping and snow coverage thickness were acquired during the same survey. Using interpolation methods, we derived the underlying bedrock topography and evaluated the ice volume.

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Géographie
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Dates et versions

hal-00864530 , version 1 (17-02-2014)

Identifiants

  • HAL Id : hal-00864530 , version 1

Citer

Albane Saintenoy, Jean-Michel Friedt, Florian Tolle, Eric Bernard, Dominique Laffly, et al.. High density coverage investigation of The Austre LovénBreen (Svalbard) using Ground Penetrating Radar. 6th International Workshop on Advanced Ground Penetrating Radar, Jun 2011, Aachen, Germany. ⟨hal-00864530⟩
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