The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions

Linking historical earthquakes with the faults that caused them is crucial for seismic hazard assessment. Historical documentation describing the effects of an earthquake is a useful information source, from which we can compile the observed intensity field of the earthquake. In this work, we use i...

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Main Authors: Yolanda de Pro Díaz, José Jesús Martínez Díaz, Carolina Canora Catalán
Format: Article
Language:English
Published: McGill University 2025-07-01
Series:Seismica
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Online Access:https://seismica.library.mcgill.ca/article/view/1493
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author Yolanda de Pro Díaz
José Jesús Martínez Díaz
Carolina Canora Catalán
author_facet Yolanda de Pro Díaz
José Jesús Martínez Díaz
Carolina Canora Catalán
author_sort Yolanda de Pro Díaz
collection DOAJ
description Linking historical earthquakes with the faults that caused them is crucial for seismic hazard assessment. Historical documentation describing the effects of an earthquake is a useful information source, from which we can compile the observed intensity field of the earthquake. In this work, we use intensity data from the catastrophic 1804 Alborán earthquake (south of Iberia) along with intensity simulations and coseismic stress transfer analysis to search for this earthquake's seismic source. We build intensity simulations for each fault proposed as a potential source, and compare these simulations with the intensity field. We also propose the possibility of the Alborán 1804 earthquake triggering the Dalías earthquake (European macroseismic intensity (IEMS-98) IX), which occurred seven months after, and analyze stress transfer between the possible sources of both earthquakes. Our results point to a conjunct rupture of the northern Al-Idrissi Fault segment and the North–South Faults as the most likely source for the Alborán earthquake.
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spelling doaj-art-4ab746ef93e24099a0447bd443ef603e2025-08-20T03:27:22ZengMcGill UniversitySeismica2816-93872025-07-014210.26443/seismica.v4i2.1493The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactionsYolanda de Pro Díaz0José Jesús Martínez DíazCarolina Canora CatalánUniversidad Complutense de Madrid Linking historical earthquakes with the faults that caused them is crucial for seismic hazard assessment. Historical documentation describing the effects of an earthquake is a useful information source, from which we can compile the observed intensity field of the earthquake. In this work, we use intensity data from the catastrophic 1804 Alborán earthquake (south of Iberia) along with intensity simulations and coseismic stress transfer analysis to search for this earthquake's seismic source. We build intensity simulations for each fault proposed as a potential source, and compare these simulations with the intensity field. We also propose the possibility of the Alborán 1804 earthquake triggering the Dalías earthquake (European macroseismic intensity (IEMS-98) IX), which occurred seven months after, and analyze stress transfer between the possible sources of both earthquakes. Our results point to a conjunct rupture of the northern Al-Idrissi Fault segment and the North–South Faults as the most likely source for the Alborán earthquake. https://seismica.library.mcgill.ca/article/view/14931804 Alborán earthquakeseismic scenarioCoulomb stress transferearthquake sourceintensity data
spellingShingle Yolanda de Pro Díaz
José Jesús Martínez Díaz
Carolina Canora Catalán
The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
Seismica
1804 Alborán earthquake
seismic scenario
Coulomb stress transfer
earthquake source
intensity data
title The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
title_full The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
title_fullStr The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
title_full_unstemmed The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
title_short The 1804 Alborán seismic series: Search for the source using seismic scenarios and static stress interactions
title_sort 1804 alboran seismic series search for the source using seismic scenarios and static stress interactions
topic 1804 Alborán earthquake
seismic scenario
Coulomb stress transfer
earthquake source
intensity data
url https://seismica.library.mcgill.ca/article/view/1493
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