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Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , |
| In: | Geophysical Research Letters, 28, 2001, 20, S. 4007-4010 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Izutani, Yasuo Kanamori, Hiroo Izutani, Yasuo Kanamori, Hiroo |
|---|---|
| author |
Izutani, Yasuo Kanamori, Hiroo |
| spellingShingle |
Izutani, Yasuo Kanamori, Hiroo Geophysical Research Letters Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan General Earth and Planetary Sciences Geophysics |
| author_sort |
izutani, yasuo |
| spelling |
Izutani, Yasuo Kanamori, Hiroo 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2001gl013402 <jats:p>We analyzed four pairs of a large (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 6) and a small (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 3.5 to 4) shallow strike‐slip earthquakes to investigate the scale‐dependence of the seismic energy‐to‐moment ratio, an important macroscopic parameter which reflects the basic physical process of seismic slip. These earthquakes occurred in the south‐western part of Japan, and high‐quality close‐in records (epicentral distance < 50 km) are available for both the small and large earthquakes. The paired events have almost the same focal mechanism and hypocenter location. We used the spectral ratio of the paired events in order to remove the effects of attenuation along the wave propagation path and the station site response. We then estimated the seismic energy from the source spectra estimated from the spectral ratio. The energy‐to‐moment ratio increases with the earthquake size. This scale‐dependence is very similar to that found earlier for earthquakes in Southern California.</jats:p> Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan Geophysical Research Letters |
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10.1029/2001gl013402 |
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American Geophysical Union (AGU), 2001 |
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American Geophysical Union (AGU), 2001 |
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0094-8276 1944-8007 |
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Geophysical Research Letters |
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| title |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_unstemmed |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_full |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_fullStr |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_full_unstemmed |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_short |
Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_sort |
scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in japan |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2001gl013402 |
| publishDate |
2001 |
| physical |
4007-4010 |
| description |
<jats:p>We analyzed four pairs of a large (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 6) and a small (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 3.5 to 4) shallow strike‐slip earthquakes to investigate the scale‐dependence of the seismic energy‐to‐moment ratio, an important macroscopic parameter which reflects the basic physical process of seismic slip. These earthquakes occurred in the south‐western part of Japan, and high‐quality close‐in records (epicentral distance < 50 km) are available for both the small and large earthquakes. The paired events have almost the same focal mechanism and hypocenter location. We used the spectral ratio of the paired events in order to remove the effects of attenuation along the wave propagation path and the station site response. We then estimated the seismic energy from the source spectra estimated from the spectral ratio. The energy‐to‐moment ratio increases with the earthquake size. This scale‐dependence is very similar to that found earlier for earthquakes in Southern California.</jats:p> |
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| author | Izutani, Yasuo, Kanamori, Hiroo |
| author_facet | Izutani, Yasuo, Kanamori, Hiroo, Izutani, Yasuo, Kanamori, Hiroo |
| author_sort | izutani, yasuo |
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| description | <jats:p>We analyzed four pairs of a large (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 6) and a small (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 3.5 to 4) shallow strike‐slip earthquakes to investigate the scale‐dependence of the seismic energy‐to‐moment ratio, an important macroscopic parameter which reflects the basic physical process of seismic slip. These earthquakes occurred in the south‐western part of Japan, and high‐quality close‐in records (epicentral distance < 50 km) are available for both the small and large earthquakes. The paired events have almost the same focal mechanism and hypocenter location. We used the spectral ratio of the paired events in order to remove the effects of attenuation along the wave propagation path and the station site response. We then estimated the seismic energy from the source spectra estimated from the spectral ratio. The energy‐to‐moment ratio increases with the earthquake size. This scale‐dependence is very similar to that found earlier for earthquakes in Southern California.</jats:p> |
| doi_str_mv | 10.1029/2001gl013402 |
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| imprint | American Geophysical Union (AGU), 2001 |
| imprint_str_mv | American Geophysical Union (AGU), 2001 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161 |
| issn | 0094-8276, 1944-8007 |
| issn_str_mv | 0094-8276, 1944-8007 |
| language | English |
| last_indexed | 2024-03-01T17:57:28.955Z |
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| physical | 4007-4010 |
| publishDate | 2001 |
| publishDateSort | 2001 |
| publisher | American Geophysical Union (AGU) |
| record_format | ai |
| recordtype | ai |
| series | Geophysical Research Letters |
| source_id | 49 |
| spelling | Izutani, Yasuo Kanamori, Hiroo 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2001gl013402 <jats:p>We analyzed four pairs of a large (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 6) and a small (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> ≈ 3.5 to 4) shallow strike‐slip earthquakes to investigate the scale‐dependence of the seismic energy‐to‐moment ratio, an important macroscopic parameter which reflects the basic physical process of seismic slip. These earthquakes occurred in the south‐western part of Japan, and high‐quality close‐in records (epicentral distance < 50 km) are available for both the small and large earthquakes. The paired events have almost the same focal mechanism and hypocenter location. We used the spectral ratio of the paired events in order to remove the effects of attenuation along the wave propagation path and the station site response. We then estimated the seismic energy from the source spectra estimated from the spectral ratio. The energy‐to‐moment ratio increases with the earthquake size. This scale‐dependence is very similar to that found earlier for earthquakes in Southern California.</jats:p> Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan Geophysical Research Letters |
| spellingShingle | Izutani, Yasuo, Kanamori, Hiroo, Geophysical Research Letters, Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan, General Earth and Planetary Sciences, Geophysics |
| title | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_full | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_fullStr | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_full_unstemmed | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_short | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| title_sort | scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in japan |
| title_unstemmed | Scale‐dependence of seismic energy‐to‐moment ratio for strike‐slip earthquakes in Japan |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2001gl013402 |