Dry-wet bedrock interface detection by radio echo sounding measurements

In this paper a method to distinguish a wet or dry bedrock-ice interface is proposed. It is based on the analysis of Radio Echo Sounding (RES) measurements, a widely employed method for determining bedrock topography in Antarctica. In particular, the RES system has played an important role in subgla...

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Bibliographic Details
Published in:IEEE Transactions on Geoscience and Remote Sensing
Main Authors: Zirizzotti, A., Cafarella, L., Baskaradas, J. A., Tabacco, I. E., Urbini, S., Mangialetti, M., Bianchi, C.
Other Authors: Zirizzotti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Baskaradas, J. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Tabacco, I. E.; Univ. di Milano - Sezione Geofisica, Milan, Italy, Urbini, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Mangialetti, M.; Univ. di Milano - Sezione Geofisica, Milan, Italy, Bianchi, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Univ. di Milano - Sezione Geofisica, Milan, Italy
Format: Article in Journal/Newspaper
Language:English
Published: IEEE Geoscience and Remote Sensing Society 2010
Subjects:
RES systems
ice absorption
bedrock reflectivity
internal ice layers
02. Cryosphere::02.02. Glaciers::02.02.10. Instruments and techniques
Annals of Glaciology
Antarc*
Antarctica
Online Access:http://hdl.handle.net/2122/6214
https://doi.org/10.1109/TGRS.2009.2038900
Description
Summary:In this paper a method to distinguish a wet or dry bedrock-ice interface is proposed. It is based on the analysis of Radio Echo Sounding (RES) measurements, a widely employed method for determining bedrock topography in Antarctica. In particular, the RES system has played an important role in subglacial lake exploration and hydrogeological studies at the bedrock-ice interface. Recently, bedrock characterization has been improved through the analysis of the power of radar echoes. Signal power depends on bedrock reflectivity and its specific physical condition. In this paper a linear model describing the loss term (internal ice absorption) is proposed. This model, together with other known quantities, contributes towards an assessment of power variation of bedrock reflectivity in order to determinate wet and dry bedrock interfaces in the Dome C region in Antarctica. Published 2343 - 2348 3.8. Geofisica per l'ambiente JCR Journal restricted

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