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The seismicity of Ischia Island

Luca D'Auria, Flora Giudicepietro, Anna Tramelli, Patrizia Ricciolino, Domenico Lo Bascio, Massimo Orazi, Marcello Martini, Rosario Peluso, Giovanni Scarpato and Antonietta Esposito
The seismicity of Ischia Island
Seismological Research Letters (September 2018) 89 (5): 1750-1760


Ischia is a volcanic island, west of the caldera of Campi Flegrei, southern Italy. Since the deployment of a modern seismic network in 1970, until the 21 August 2017 earthquake, the seismicity of Ischia has been characterized by low-magnitude (Md< or =2.3) earthquakes located in the northern part of the island, mostly beneath the town of Casamicciola Terme at very shallow depths ( approximately 500 m). Some of these events seem to have occurred on the same seismogenetic structure in the northern part of the island. This area coincides with that where the devastating events of 1881 and 1883 occurred and where the small-magnitude seismicity recorded between 1927 and 1936 was located. The August 2017 seismic sequence affected the same area. The current network configuration is able to locate shallow events with Md> or =1.0 and to detect smaller earthquakes or other types of natural and artificial events (e.g., blast fishing, geothermal well explosions; see The Seismic Network section). Here, we present the catalog of earthquakes recorded on Ischia between 1999 and February 2018 and compare the August 2017 seismic sequence with the background seismicity. Furthermore, we identified a sequence of events possibly linked to the explosion of a geothermal well on the island.

ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 89
Serial Issue: 5
Title: The seismicity of Ischia Island
Affiliation: Istituto Nazionale di Geofisica e Vulcanologia, Naples, Italy
Pages: 1750-1760
Published: 201809
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 30
Accession Number: 2019-005957
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, sketch maps
N40°42'00" - N40°46'60", E13°50'60" - E13°58'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201906
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