Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves
The dimensions and rupture velocities of four earthquakes, two in the Mid-Atlantic Ridge and two in Iceland with strike–slip mechanisms and magnitudes (Mw) between 6.2 and 6.8 were studied using the directivity effects of Rayleigh and body waves. For Rayleigh waves we used the directivity function f...
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Language: | English |
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_2952902 2023-05-15T16:48:58+02:00 Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves Pro, C. Buforn, E. Udías, A. 2007 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2952902 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2006.12.011 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2952902 Tectonophysics info:eu-repo/semantics/article 2007 ftgfzpotsdam https://doi.org/10.1016/j.tecto.2006.12.011 2022-09-14T05:54:44Z The dimensions and rupture velocities of four earthquakes, two in the Mid-Atlantic Ridge and two in Iceland with strike–slip mechanisms and magnitudes (Mw) between 6.2 and 6.8 were studied using the directivity effects of Rayleigh and body waves. For Rayleigh waves we used the directivity function for different pairs of stations and for body waves the waveforms of P and SH waves corresponding to a simple extended line source. We have found that three have very shallow depths about 3 km and one 8 km, fault lengths between 12 km and 21 km, and a low rupture velocity of about 1.5 km/s to 2.0 km/s which supports the idea of the presence of slow earthquakes in transform faults. Article in Journal/Newspaper Iceland GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Mid-Atlantic Ridge Tectonophysics 433 1-4 65 79 |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
The dimensions and rupture velocities of four earthquakes, two in the Mid-Atlantic Ridge and two in Iceland with strike–slip mechanisms and magnitudes (Mw) between 6.2 and 6.8 were studied using the directivity effects of Rayleigh and body waves. For Rayleigh waves we used the directivity function for different pairs of stations and for body waves the waveforms of P and SH waves corresponding to a simple extended line source. We have found that three have very shallow depths about 3 km and one 8 km, fault lengths between 12 km and 21 km, and a low rupture velocity of about 1.5 km/s to 2.0 km/s which supports the idea of the presence of slow earthquakes in transform faults. |
format |
Article in Journal/Newspaper |
author |
Pro, C. Buforn, E. Udías, A. |
spellingShingle |
Pro, C. Buforn, E. Udías, A. Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
author_facet |
Pro, C. Buforn, E. Udías, A. |
author_sort |
Pro, C. |
title |
Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
title_short |
Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
title_full |
Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
title_fullStr |
Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
title_full_unstemmed |
Rupture length and velocity for earthquakes in the Mid-Atlantic Ridge from directivity effect in body and surface waves |
title_sort |
rupture length and velocity for earthquakes in the mid-atlantic ridge from directivity effect in body and surface waves |
publishDate |
2007 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2952902 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Tectonophysics |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2006.12.011 https://gfzpublic.gfz-potsdam.de/pubman/item/item_2952902 |
op_doi |
https://doi.org/10.1016/j.tecto.2006.12.011 |
container_title |
Tectonophysics |
container_volume |
433 |
container_issue |
1-4 |
container_start_page |
65 |
op_container_end_page |
79 |
_version_ |
1766039043434348544 |