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Investigation of snow avalanches with ground based ku-band radar

Lucas, C. and Hajnsek, Irena and Marino, Armando and Böhler, Y. (2016) Investigation of snow avalanches with ground based ku-band radar. European Conference on Synthetic Aperture Radar (EUSAR), 2016-06-06 - 2016-06-09, Hamburg, Germany.

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Abstract

A ground based interferometric and fully polarimetric real aperture Ku-band system is used to observe snow avalanches and hazardous snowpack. The system's high temporal resolution of three minutes allows for near real time monitoring of processes. Instantaneous coherence drop was successfully used to detect avalanches. In combination with geometrical features of avalanches and their theoretical flow paths, modelled by water flow down the slope, the coherence drop has the potential for a reliable near real time avalanche detector. Variations in the coherence drop over a warm spring day, where significant snow melt occurred, were analysed with different time intervals and could partly be correlated to temperature variations inducing snow melt and refreezing. However this first data analysis showed that other processes must be taken into account to fully explain the variations. © VDE VERLAG GMBH · Berlin · Offenbach.

Item URL in elib:https://elib.dlr.de/110704/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of snow avalanches with ground based ku-band radar
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lucas, C.WSLUNSPECIFIED
Hajnsek, IrenaUNSPECIFIEDUNSPECIFIED
Marino, Armandouniversity of edinburgh (uk)UNSPECIFIED
Böhler, Y.WSLUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Drops; Flow of water; Geothermal springs; Radar; Snow; Synthetic aperture radar Geometrical features; Ground based; High temporal resolution; Near-real time; Near-real-time monitoring; Snow avalanche; Temperature variation; Time interval
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Hamburg, Germany
Event Type:international Conference
Event Dates:2016-06-06 - 2016-06-09
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Multi-dimensionale SAR-Auswertung
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > SAR Technology
Deposited By: Bauer, Robert
Deposited On:13 Jan 2017 14:42
Last Modified:13 Jan 2017 14:42

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