Determination of parameters for historicaI British earthquakes
Examination of 20th century data from the U.K. shows a good correlation between felt area and instrumental magnitude, producing good magnitude values for historical earthquakes where felt area is known; this is a more reliable method than using I0. The equations: ML = 1.03 log A3:; -0.19; ML = 0.92...
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| Format: | Article |
| Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
1996-06-01
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| Series: | Annals of Geophysics |
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| Online Access: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/4035 |
| _version_ | 1811268560368959488 |
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| author | R. M. W. Musson |
| author_facet | R. M. W. Musson |
| author_sort | R. M. W. Musson |
| collection | DOAJ |
| description | Examination of 20th century data from the U.K. shows a good correlation between felt area and instrumental magnitude, producing good magnitude values for historical earthquakes where felt area is known; this is a more reliable method than using I0. The equations: ML = 1.03 log A3:; -0.19; ML = 0.92 log A4 + 0.71 give magnitude from areas within isoseismals 3 and 4 MSK. Dcpths for historical earthquakes have also been obtained using a modification of the well-known Sponheuer method, using the program MACDEP; the regional value for (á is 0.003 and depths for events with magnitude above 4 ML range from 3 to 25 km. |
| first_indexed | 2024-04-12T21:24:24Z |
| format | Article |
| id | doaj.art-22030205f28845eaa1b16ca69f20ab99 |
| institution | Directory Open Access Journal |
| issn | 1593-5213 2037-416X |
| language | English |
| last_indexed | 2024-04-12T21:24:24Z |
| publishDate | 1996-06-01 |
| publisher | Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
| record_format | Article |
| series | Annals of Geophysics |
| spelling | doaj.art-22030205f28845eaa1b16ca69f20ab992022-12-22T03:16:12ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X1996-06-0139510.4401/ag-4035Determination of parameters for historicaI British earthquakesR. M. W. MussonExamination of 20th century data from the U.K. shows a good correlation between felt area and instrumental magnitude, producing good magnitude values for historical earthquakes where felt area is known; this is a more reliable method than using I0. The equations: ML = 1.03 log A3:; -0.19; ML = 0.92 log A4 + 0.71 give magnitude from areas within isoseismals 3 and 4 MSK. Dcpths for historical earthquakes have also been obtained using a modification of the well-known Sponheuer method, using the program MACDEP; the regional value for (á is 0.003 and depths for events with magnitude above 4 ML range from 3 to 25 km.http://www.annalsofgeophysics.eu/index.php/annals/article/view/4035Earthquake depthearthquake magnitudehistorical earthquakes |
| spellingShingle | R. M. W. Musson Determination of parameters for historicaI British earthquakes Annals of Geophysics Earthquake depth earthquake magnitude historical earthquakes |
| title | Determination of parameters for historicaI British earthquakes |
| title_full | Determination of parameters for historicaI British earthquakes |
| title_fullStr | Determination of parameters for historicaI British earthquakes |
| title_full_unstemmed | Determination of parameters for historicaI British earthquakes |
| title_short | Determination of parameters for historicaI British earthquakes |
| title_sort | determination of parameters for historicai british earthquakes |
| topic | Earthquake depth earthquake magnitude historical earthquakes |
| url | http://www.annalsofgeophysics.eu/index.php/annals/article/view/4035 |
| work_keys_str_mv | AT rmwmusson determinationofparametersforhistoricaibritishearthquakes |