Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Radioglaciological studies on Hurd Peninsula glaciers, Livingston Island, Antarctica
Year:2009
Research Areas
  • Geophysics
Information
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 (200 MHz)-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.
International
Si
JCR
Si
Title
ANNALS OF GLACIOLOGY
ISBN
0260-3055
Impact factor JCR
0,802
Impact info
Volume
50
10.3189/172756409789097603
Journal number
51
From page
17
To page
24
Month
AGOSTO
Ranking
Participants
  • Autor: Francisco Jose Navarro Valero (UPM)
  • Autor: Jaime Otero Garcia (UPM)
  • Autor: Javier Jesus Lapazaran Izargain (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
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