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The seismicity of Portugal and its adjacent Atlantic region from 1300 to 2014; Maximum Observed Intensity (MOI) Map

C. Ferrao, M. Bezzeghoud, B. Caldeira and J. F. Borges
The seismicity of Portugal and its adjacent Atlantic region from 1300 to 2014; Maximum Observed Intensity (MOI) Map
Seismological Research Letters (May 2016) 87 (3): 743-750

Abstract

In this study, we considered earthquakes with a maximum observed intensity (MOI) I (sub o) > or =V that occurred throughout the Portuguese mainland and its adjacent Atlantic region to produce the map of maximum intensities of Portugal. This map is based on a wide variety of historical and recent sources, including 175 earthquakes, over the period of 1300-2014. This MOI map allows the regions of high, medium, and low levels of seismic hazard to be highlighted. The entirety of Portugal has been affected by major seismic events, some of which have caused serious damage. In addition, offshore earthquakes have had significant impacts on the coastal cities located in the central and southern regions of the country. Because the southern region of mainland Portugal is more active than the northern region, the largest concentrations of events with I (sub o) > or =VI are in the southern region, especially on the mainland near the city of Evora, in the Lisbon region, in the Lower Tagus Valley region, and along the Algarve coast, especially in the southwest region in Cape of Sao Vicente and the Gorringe Bank.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 87
Serial Issue: 3
Title: The seismicity of Portugal and its adjacent Atlantic region from 1300 to 2014; Maximum Observed Intensity (MOI) Map
Affiliation: University of Evora, Instituto de Ciencias da Terra, Evora, Portugal
Pages: 743-750
Published: 201605
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 33
Accession Number: 2016-056520
Categories: Quaternary geologySeismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N37°00'00" - N42°10'00", W09°30'00" - W06°10'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201627
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