Agenda

19 Ott 2017 16:00

Variations in the isotopic composition of precipitation at Dome C (East Antarctica)

Campus Scientifico via Torino - edificio DELTA, Aula 0A

Giuliano Dreossi, DAIS

Abstract:
Oxygen and hydrogen stable isotopes have been widely used as temperature proxies in paleoclimate studies; however, the isotope-temperature relationship is yet to be completely understood, hence the need to carry on further studies. The French-Italian Concordia base, at Dome C, East Antarctica, is where the Epica Dome C icore core was drilled, covering the last 800,000 years. Since 2008, snow precipitation has been collected in proximity of the Concordia base on a daily basis, and a nearby automatic weather station has been providing daily temperature data since 1995. The snow crystal observation, carried out from the winter-over Concordiar personnel, has allowed to discriminate between three types of precipitation: snowfall, hoar and diamond dust. The isotope-in-precipitation record at Dome C is still in progress and it is the longest for the Antarctic continent.

Lingua

L'evento si terrà in italiano

Organizzatore

Barbara Stenni

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