Volcanic monitoring of the 2021 La Palma eruption using long-period magnetotelluric data.

ABSTRACT: Between September and December 2021, the first subaerial volcanic eruption in the Canary Islands in 50 years took place on the island of La Palma. Since November 2021, we have been conducting a long-period magnetotelluric (MT) monitoring experiment at a site located 2.4 km east of the volcanic cone. Having continuously recorded data since then, the obtained dataset shows significant changes in resistivity over the fourteen months following the eruption: more than ± 20% in apparent resistivity and ± 2 degrees in phase. These temporal variations in electrical resistivity, recorded continuously using long-period MT during both the syn- and post-eruptive stages, have not been reported to date, making this dataset unique. Four estimated impedances have been selected as representatives of the ma

SUBMITTER: Pina-Varas P 

PROVIDER: S-EPMC10517953 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature