E com enorme prazer que comunicamos que Vanessa Batista, estudante de mestrado do Instituto de Geografia e Ordenamento do Território da Universidade de Lisboa e investigadora do Centro de Estudos Geográficos - UL, recebeu o Prémio por "Outstanding Presentation for Early Career Scientists" na Oslo IPY Science Conference, na categoria 2 - "Past, Present and Future Changes in Polar Regions". Um total de 750 investigadores em início de carreira participou no concurso e a Vanessa Batista foi uma das 12 premiadas, tendo obtido o prémio pelo melhor poster. O prémio foi entregue por Jennifer Provencher, coordenadora do Awards Committee e por Jonas Gahr Støre, Ministro Norueguês dos Negócios Estrangeiros.
Este prémio vem reconhecer a importância do trabalho de Vanessa Batista realizado na ilha Deception na Antárctida Marítima, sobre os factores que controlam a camada activa do permafrost, a nível espacial e temporal.
Vanessa Batista foi primeira autora de um trabalho em colaboração com colegas do CEG/IGOT-UL, da Universidade de Alcalá de Henares (Espanha) e da Universidade de Buenos Aires (Argentina).
O Comité Português para o Ano Polar Internacional aproveita para dar os parabéns à Vanessa Batista pelo seu trabalho e pelo contributo para a consolidação da ciência polar portuguesa a nível nacional e internacional.
Em baixo, incluimos o resumo do poster.
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Summer Evolution of the Active Layer Thickness in Cerro de la Cruz Area (Deception Island, Maritime Antarctic)
V. Batista1, M. Neves1, R. Melo1, G. Vieira1, A. Caselli2, M. Ramos3.
1. Centro de Estudos Geográficos, University of Lisbon,
2. Geological Sciences Department, University of Buenos Aires,
3. Department of Physics, University of Alcalá de Henares
Keywords: Active layer, Small CALM sites, Permafrost, Deception Island
In order to understand the influences of altitude and aspect on active layer thickness, 6 small CALM sites were installed in Deception Island. These allow for monitoring the spatial and temporal evolution of thaw during the summer and provide a insight into the characteristics of active layer and permafrost in this volcanic island.
Each small CALM site consists of a square of 4x4 m limiting a grid of 9 monitoring points. The measurement of the active layer thickness was made using a metal probe with 1.1 m length inserted into the soil down to the frozen ground. The depth at each node was recorded and average data for each small CALM site were analised. Observations were made at a few days interval during the summers of 2009 and 2010.
The Cerro de la Cruz area shows non-cohesive volcano-sedimentary substratum and slopes with various aspects and altitudes, ranging from 35 to 119 m. Four small CALM sites were installed at different altitudes at a north facing slope allowing to evaluate its influence on thaw, but allowing for similar incoming solar radiation. Two small CALM sites have been located on the north and south slopes of an elongated E-W running interfluve that develops between the Cerro de la Cruz and the Mekón valley. Chosen sites were at similar altitude, but showed different aspects allowing for contrasting incoming radiation.
This poster presents the results for 2009 and 2010 and an evaluation of the influence of altitude and aspect in the behavior of the active layer. Data are compared to meteorological data from a nearby station. Interesting results were obtained on the rates thaw according to altitude and aspect. During the summer, events with lower air temperatures resulted in a upwards refreezing that lasted for very short periods before the reinitiation of thaw.
Veja publicações relacionadas:
- Jornal «Público»: Investigadora portuguesa recebe prémio internacional por trabalhos na Antárctida
http://ecosfera.publico.clix.pt/noticia.aspx?id=1441980
- Revista «Ciência Hoje»: Portuguesa premiada no IPY Oslo Science Conference
http://www.cienciahoje.pt/index.php?oid=43517&op=all
- Revista «Ciência Hoje»: Gonçalo Vieira na «IPY Oslo Science Conference»
http://www.cienciahoje.pt/index.php?oid=43324&op!+=all
- MSN Mulher
http://mulher.pt.msn.com/mundodamulher/article.aspx?cp-documentid=153960625.
Total de 6 votantes 
