Evidence of persistent seismo-volcanic activity at Marsili seamount

Antonino D'alessandro Antonino D'Alessandro,Giorgio Mangano Giorgio Mangano,Giuseppe D'anna Giuseppe D'Anna

doi:10.4401/ag-5515

Antonino D'alessandro Antonino D'Alessandro, Giorgio Mangano Giorgio Mangano + Show 1 more

Open Access

https://doi.org/10.4401/ag-5515

Copy DOI

Abstract

<p>The Marsili submarine volcano is the largest European volcano, and it can be considered as the key to our understanding of the dynamics of the spreading and back-arc lithosphere formation in the Tyrrhenian sector [Marani et al. 2004, and references therein]. Despite its size, it is very difficult to monitor due to its geographical position [D'Alessandro et al. 2011], and it still remains little known. In 2006, the Centro Nazionale Terremoti (National Earthquake Centre) of the Istituto Nazionale di Geofisica e Vulcanologia (INGV) deployed a broadband ocean-bottom seismometer with hydrophone (OBS/H) [Mangano et al. 2011] on the flat top of Marsili volcano, at a depth of ca. 790 m. In only nine days, the instrument recorded ca. 800 seismo-volcanic events [D'Alessandro et al. 2009]. This revealed the intense seismo-volcanic activity of Marsili volcano for the first time. […]</p><p> </p>

Highlights

The Marsili submarine volcano is the largest European volcano, and it can be considered as the key to our understanding of the dynamics of the spreading and back-arc lithosphere formation in the Tyrrhenian sector [Marani et al 2004, and references therein]
On February 14, 2010, another ocean-bottom seismometer with hydrophone (OBS/H) was deployed at the same point for a long-term experiment
We recognized 589 volcano-tectonic type A (VT-A) events and 1,952 volcanotectonic type B (VT-B) events (Figure 1), with their local magnitudes measured according to Havskov et al [2003]

Summary

Introduction

The Marsili submarine volcano is the largest European volcano, and it can be considered as the key to our understanding of the dynamics of the spreading and back-arc lithosphere formation in the Tyrrhenian sector [Marani et al 2004, and references therein]. In 2006, the Centro Nazionale Terremoti (National Earthquake Centre) of the Istituto Nazionale di Geofisica e Vulcanologia (INGV) deployed a broadband ocean-bottom seismometer with hydrophone (OBS/H) [Mangano et al 2011] on the flat top of Marsili volcano, at a depth of ca. This revealed the intense seismo-volcanic activity of Marsili volcano for the first time. The short duration of the experiment did not allow exhaustive characterization of the seismo-volcanic activities currently ongoing on the seamount.

Results

Conclusion