Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Decelerated mass loss of Hurd Peninsula glaciers, Livingston Island, Antarctic Peninsula
Year:2012
Research Areas
  • Geophysics
Information
Abstract
We present in this contribution the winter,summer and annual surface mass balances of Johnsons and Hurd glaciers, for the hydrological years 2002-2011. The annual surface mass balances, averaged over the 10-year period, are slightly negative (?0.15±0.10 m/a w.e.) for Hurd Glacier, and very slightly positive (0.05±0.10m/a w.e.) for Johnsons Glacier. However, it we add to the latter the calving losses(volumetric calving flux is estimated as 0.823 × 10?3 km3/a), it results an equivalent geodetic mass balance of ?0.15±0.10 m/a w.e. for Johnsons Glacier. These mass lossesare, however, smaller (almost by half) than the average geodetic mass balances estimated for the period 1956-2000 (?0.27 and ?0.16 m/a w.e., for Hurd and Johnsons glaciers, respectively), showing that the rate of mass loss has decelerated in spite of continued regional warming. Interestingly, this seems to be due not just to the observed increase in accumulation in the region, but, at least in the case of Hurd and Johnsons glaciers, also to a decrease of surface melt associated to the smaller amount of energy available at the glacier surface as a result of increased cloud cover.
International
Si
Congress
XXXII SCAR and Open Science Conference
960
Place
Portland, Oregon, USA
Reviewers
Si
ISBN/ISSN
978-0-948277-24-5
Start Date
16/07/2012
End Date
19/07/2012
From page
299
To page
299
XXXII SCAR and Open Science Conference
Participants
  • Autor: Francisco Jose Navarro Valero (UPM)
  • Autor: Maria Isabel de Corcuera Labrado (UPM)
  • Autor: Alba Martín Español (UPM)
  • Autor: Javier Jesus Lapazaran Izargain (UPM)
  • Autor: Jaime Otero Garcia (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
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