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Geoelectrical characterization of superficial deposits in Western Antarctica (Livingston Island, South Shetland Islands)

dc.contributor.authorMuñoz Martín, Alfonso
dc.contributor.authorGiner Robles, J. L.
dc.contributor.authorGonzález Casado, J. M.
dc.contributor.authorLópez Martínez, Jerónimo
dc.contributor.authorDurán Valsero, Juan José
dc.contributor.authorGumiel Martínez, Pablo
dc.contributor.authorSerrano, E.
dc.description.abstractThe geophysical study of superficial deposits (mainly gravels) in ice-free areas near the seashore in the South Shetland Islands (Antarctica) allows establishing the possible existence of permafrost and buried ice bodies. In this work we have investigated the internal structure of Quaternary sediments using the resistivity method (vertical electric sounding, V.E.S.), with the purpose of establishing the resistivity values of the different materials and their geometry. We present here the results obtained from 1 7 vertical electric soundings carried out in Caleta Española, (north coast of Hurd Peninsula), and in the surroundings of Caleta del Glaciar Rocoso (south coast of Hurd Peninsula), both in Livingston Island. Vertical electric soundings interpretation has allowed us to characterise different units from the resistivity values (active layer, permafrost, buried ice, Quaternary deposits and their basement), and to establish the inter-phase between sea water and continental water. Moreover, with the resistivity method we have deduced the spatial distribution of some of these beds. In this way the permafrost (with resistivity values ranging between 13000 and 35000 Q*m), and the associated active layer, is restrained to shallow depths (< 2 m) and located in the surveyed areas faraway from the seaside (i.e. mainly in the upper raised beaches). Buried ice under coarse Quaternary deposits have resistivity values of one major order magnitude than the permafrost (> 60000 Q*m) and has been only found in the studied rock glacieren_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherGeophysical prospectingen_US
dc.subject.otherQuaternary depositsen_US
dc.subject.otherWestern Antarcticaen_US
dc.titleCaracterización geoeléctrica de depósitos superficiales en la Antártida Occidental (Isla Livingston, Islas Shetland del Sur)en_US
dc.titleGeoelectrical characterization of superficial deposits in Western Antarctica (Livingston Island, South Shetland Islands)eng

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