La Palma 2021 Eruption Dike Modeling

Abstract

Magnetotelluric surveying has a huge potential for studying subsurface structures and processes due to its wide range of depths. It is particularly useful in igneous and volcanic events due to the considerable resistivity changes that rock undergoes at high temperatures. Despite that, few models and simulations solving the temperature-resistivity evolution with time have been proposed. The 2021 volcanic eruption in La Palma provided an excellent opportunity to develop a model of these characteristics given the constant monitoring and surveying data available of the periods during and after the eruption. The presence of electrical resistivity anomalies during the cooling process of the igneous intrusion made it even more interesting to develop a more complete and general model for these types of systems