Análisis de los ciclos de congelación y descongelación en la capa activa en el entorno de la BAE JCI. Periodo 2000-2011 = Study of the active layer freezing and thawing cycles in the surroundings of the Spanish Antarctic Station JCI. 2000 to 2011.
- M. Ramos
- M.A. de Pablo
- A. Molina
- G. Vieira
- A. Trindade
- A. Correia
Publisher: Sociedad de Ciencias Aranzadi
ISBN: 978-84-941323-1-5
Year of publication: 2012
Pages: 723-726
Congress: 7a. Asamblea Hispano Portuguesa de Geodesia y Geofísica
Type: Conference paper
Sustainable development goals
Abstract
Close to the Spanish Antarctic Station our research team drilled, at the 1999-2000 Antarctic campaign, a 2,30 m shallow borehole in quartzite bedrock. This borehole was instrumented with temperature data loggers (Tinytag model) that have allowed us to register the gradient thermal in a continuous regime evolution during the 2000-2011 period. The analysis of the temperature data allows to describe the temporal evolution of the freezing and thawing cycles in the active layer, as well as the N-Factor variability, related with the soil surface thermal behavior and its energy balance. In this work we discuss the different freezing and thawing mechanisms in monthly and annual periods. The study shows a important freezing and thawing inter annual variability,, the annual cumulative index showed values in the following intervals: freezing index, If є (-700, -300 ºC day) and thawing index It є (400, 700 ºC day).