Earth’s surface deformation on mount Etna: GPS measurements, interpretation, relationship to the mode of volcanism

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We present results from a study of lateral Earth’s surface deformation and vertical movements in the area of the Mount Etna active volcano (Sicily, Italy) based on observations by global satellite navigation systems in 2011–2017 at time intervals of 24 hours at sparse stations of the regional geodetic network. The study of Mount Etna is especially important because (1) the volcano stands in a densely populated area, (2) the eruptions are nearly continuous, and (3) the location of the volcano is inconsistent with plate tectonic concepts. Subregional trends have been identified in the deformation of the area of study. Extension was recorded, not only around the summit crater, but also far from it, in the Ionian Sea. This circumstance suggests the existence of an extensive plumbing system at depth whose sources are far from the active summit crater. We discuss geological and geophysical survey results of the coastal area and the sea area in the region. It is shown that Earth’s surface deformation should be studied from observations of the existing networks that are sparse, but cover a large area.

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作者简介

V. Kafta

Geophysical Center, Russian Academy of Sciences; Institute of Agrarian Technology, Russia’s University of Peoples’ Friendship; Federal Science Center of Geodesy, Cartography, and 3D Data Infrastructure

编辑信件的主要联系方式.
Email: v.kaftan@gcras.ru
俄罗斯联邦, 3, Molodezhnaya str., Moscow, 119269; 6, Miklukho-Maklaya str., Moscow, 117198; 26, Onezhskaya str., Moscow, 125413 

M. Rodkin

Federal Science Center of Geodesy, Cartography, and 3D Data Infrastructure; Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences

Email: rodkin@mitp.ru
俄罗斯联邦, 84/32, Profsoyuznaya str., Moscow, 117997; 1B, Nauki str., Yuzhno-Sakhalinsk, 693022 

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