Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Progress in the development of techniques for estimation of the ice volume of Svalbard glaciers from GPR data
Year:2012
Research Areas
  • Geophysics
Information
Abstract
An inventory of radio-echo sounded glaciers in Svalbard has been compiled with the aim of obtaining a reliable estimation of the total ice volume stored in Svalbard glaciers. To achieve this goal, a set of ice thickness data has been gathered from different sources and formats. Two main sets of GPR-retrieved thickness data can be distinguished. First, data from glaciers for which a rather complete net of GPR profiles is available, usually from ground-based echo sounding. Second, airborne echo sounding data which usually covers only the central flow line of the glacier. In this contribution we will focus on the techniques of volume estimation for these two data sets. In the first case, the volume computation from the ice thickness map is straightforward using the routines incorporated in the GIS software. Special attention will be paid to the analysis of errors involved, both regarding the radar data and the interpolation and volume computation. In the second case, the volume calculation involves some assumption about the shape of the cross section of the glacier valley. At the early state of our work we approximated the cross-section by a parabola, but this resulted in an underestimate by about 20%. Further work is in progress to improve such estimates; one of the approaches that we have considered takes into account geomorphological aspects of the glacier valley.
International
No
Congress
Workshop on the Dynamics and Mass Budget of Arctic Glaciers & the IASC Network on Arctic Glaciology Annual Meeting
960
Place
Zieleniec, Poland
Reviewers
No
ISBN/ISSN
Start Date
09/01/2012
End Date
12/01/2012
From page
40
To page
42
The Dynamics and Mass Budget of Arctic Glaciers
Participants
  • Autor: Javier Jesus Lapazaran Izargain (UPM)
  • Autor: Alba Martín Español (UPM)
  • Autor: Francisco Jose Navarro Valero (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Simulación Numérica en Ciencias e Ingeniería
  • Departamento: Matemática Aplicada a las Tecnologías de la Información
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)