Imaging the earthquake cycle with the Moment-Ratio Method: An exploration
The seismic moment cycle at plate boundaries may be imaged by the Moment-Ratio Method (MRM). In this exploratory technique the fluctuation of cumulative moment deficiency is used as an indicator of the cycle of degradation and recovery of free energy along an active tectonic region. A 20-year half-life is assumed for the healing process of earthquake ruptures along the Pacific plate boundary. Using the Pacheco-Sykes Catalog of large shallow earthquakes (M>7), we estimate the moment ratio for Japan and Mexico at 20-year intervals during the 20th century. Moment-ratio peaks for 1980 correlate with subsequent earthquakes of magnitude M>7 during the following 20-year period in Mexico and Japan.
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Universidad Nacional Autónoma de México, Instituto de Geofísica
2009
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| Online Access: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692009000400006 |
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oai:scielo:S0016-716920090004000062010-02-15Imaging the earthquake cycle with the Moment-Ratio Method: An explorationZhang,C.Shi,Y.Ma,L.Huang,J.Lomnitz,C. Cumulative seismic moment subduction zone seismicity earthquake prediction The seismic moment cycle at plate boundaries may be imaged by the Moment-Ratio Method (MRM). In this exploratory technique the fluctuation of cumulative moment deficiency is used as an indicator of the cycle of degradation and recovery of free energy along an active tectonic region. A 20-year half-life is assumed for the healing process of earthquake ruptures along the Pacific plate boundary. Using the Pacheco-Sykes Catalog of large shallow earthquakes (M>7), we estimate the moment ratio for Japan and Mexico at 20-year intervals during the 20th century. Moment-ratio peaks for 1980 correlate with subsequent earthquakes of magnitude M>7 during the following 20-year period in Mexico and Japan.info:eu-repo/semantics/openAccessUniversidad Nacional Autónoma de México, Instituto de GeofísicaGeofísica internacional v.48 n.4 20092009-12-01info:eu-repo/semantics/articletext/htmlhttp://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692009000400006en |
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| language |
English |
| format |
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| author |
Zhang,C. Shi,Y. Ma,L. Huang,J. Lomnitz,C. |
| spellingShingle |
Zhang,C. Shi,Y. Ma,L. Huang,J. Lomnitz,C. Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| author_facet |
Zhang,C. Shi,Y. Ma,L. Huang,J. Lomnitz,C. |
| author_sort |
Zhang,C. |
| title |
Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| title_short |
Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| title_full |
Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| title_fullStr |
Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| title_full_unstemmed |
Imaging the earthquake cycle with the Moment-Ratio Method: An exploration |
| title_sort |
imaging the earthquake cycle with the moment-ratio method: an exploration |
| description |
The seismic moment cycle at plate boundaries may be imaged by the Moment-Ratio Method (MRM). In this exploratory technique the fluctuation of cumulative moment deficiency is used as an indicator of the cycle of degradation and recovery of free energy along an active tectonic region. A 20-year half-life is assumed for the healing process of earthquake ruptures along the Pacific plate boundary. Using the Pacheco-Sykes Catalog of large shallow earthquakes (M>7), we estimate the moment ratio for Japan and Mexico at 20-year intervals during the 20th century. Moment-ratio peaks for 1980 correlate with subsequent earthquakes of magnitude M>7 during the following 20-year period in Mexico and Japan. |
| publisher |
Universidad Nacional Autónoma de México, Instituto de Geofísica |
| publishDate |
2009 |
| url |
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692009000400006 |
| work_keys_str_mv |
AT zhangc imagingtheearthquakecyclewiththemomentratiomethodanexploration AT shiy imagingtheearthquakecyclewiththemomentratiomethodanexploration AT mal imagingtheearthquakecyclewiththemomentratiomethodanexploration AT huangj imagingtheearthquakecyclewiththemomentratiomethodanexploration AT lomnitzc imagingtheearthquakecyclewiththemomentratiomethodanexploration |
| _version_ |
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