Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica

Navarro Valero, Francisco Jose and Otero García, Jaime and Macheret, Yu and Vasilenko, Evgeniy and Lapazaran Izargain, Javier Jesús and Ahlstrom, L.P. and Machío, F. (2009). Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica. In: "International Symposium on Radioglaciology and its Applications, 2008", 09/06/2008-13/06/2008, Madrid, España.

Description

Title: Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica
Author/s:
  • Navarro Valero, Francisco Jose
  • Otero García, Jaime
  • Macheret, Yu
  • Vasilenko, Evgeniy
  • Lapazaran Izargain, Javier Jesús
  • Ahlstrom, L.P.
  • Machío, F.
Item Type: Presentation at Congress or Conference (Article)
Event Title: International Symposium on Radioglaciology and its Applications, 2008
Event Dates: 09/06/2008-13/06/2008
Event Location: Madrid, España
Title of Book: Proccedings of International Symposium on Radioglaciology and its Applications, 2008. Annals of Glaciology
Date: 2009
Volume: 50, Is
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Matemática Aplicada a las Tecnologías de la Información [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

We present the results of several radio-echo sounding surveys carried out on Johnsons and Hurd Glaciers, Livingston Island, Antarctica, between the 1999/2000 and 2004/05 austral summer campaigns, which included both radar profiling and common-midpoint measurements with low (20- 25 MHz)- and high (200MHz)-frequency radars. The latter have allowed us to estimate the radio-wave velocity in ice and firn and the corresponding water contents in temperate ice, which vary between 0 and 1.6% depending on the zone. Maximum ice thickness is ~200 m, with a mean value of 93.6 ± 2.5 m. Total ice volume is 0.968 ± 0.026 km3, for an area of 10.34 ± 0.03 km2. The subglacial relief of Johnsons Glacier is quite smooth, while that of Hurd Glacier shows numerous overdeepenings and peaks. The radar records suggest that Hurd Glacier has a polythermal structure, contrary to the usual assumption that glaciers in Livingston Island are temperate. This is also supported by other dynamical and geomorphological evidence.

More information

Item ID: 4400
DC Identifier: http://oa.upm.es/4400/
OAI Identifier: oai:oa.upm.es:4400
Official URL: http://www.igsoc.org/
Deposited by: Memoria Investigacion
Deposited on: 28 Sep 2010 11:08
Last Modified: 20 Apr 2016 13:38
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM