Results 231 to 240 of about 30,472 (270)

Stochastic synthesis of earthquake catalogs

Journal of Geophysical Research: Solid Earth, 1981
A model of earthquake occurrence is proposed that is based on results of statistical studies of earthquake catalogs. We assume that each earthquake generates additional a probability that depends on time as t−(1+θ). This assumption together with one regarding the independence of branching events on adjacent branches of the event ‘tree,’ is sufficient ...
Y. Y. Kagan, L. Knopoff
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A Method for Identifying Explosions Contaminating Earthquake Catalogs: Application to the Washington Regional Earthquake Catalog

Seismological Research Letters, 1992
Abstract The Washington Regional Seismograph Network (WRSN) earthquake catalog shows more earthquakes in the day than at night, probably because some local explosions are misidentified as earthquakes. We have implemented a method to help discriminate likely local blasts from local earthquakes. Probable blasts are identified based on time
R. Benson, C. D. Lindholm, R. Ludwin, A. Qamar   +3 more
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Next generation analysis of earthquakes and earthquake catalogs with InSAR

2021
Availability and frequency of synthetic aperture radar (SAR) imagery are rapidly increasing. This surge of data presents new opportunities to explore both old and new questions relating to surface deformation. This expansion also introduces common challenges associated with large volumes of data.
Clayton Brengman, William Barnhart, William Yeck, Mark Reagan, Bill McClelland, Emily Finzel   +5 more
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A Global Catalog of Calibrated Earthquake Locations

Seismological Research Letters, 2022
Abstract We produced a globally distributed catalog of earthquakes and nuclear explosions with calibrated hypocenters, referred to as the Global Catalog of Calibrated Earthquake Locations (GCCEL). This dataset currently contains 18,782 events in 289 clusters with >3.2 million arrival times observed at 19,258 stations.
Eric A. Bergman, Harley M. Benz, William L. Yeck, Ezgi Karasözen, E. Robert Engdahl, Abdolreza Ghods, Gavin P. Hayes, Paul S. Earle   +7 more
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Catalog of Nicaraguan earthquakes

Bulletin of the Seismological Society of America, 1974
abstract A documented catalog of 457 Nicaraguan seismic and volcanic events reported for the 453-year period 1520-1973 is presented. Earthquakes range in size from those that caused the destruction of the former capital at Leon in 1609, 1663 and again in 1885 to instrumentally recorded events of small magnitude.
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A hybrid approach for declustering of earthquake catalogs

2023
Usually, the earthquake catalog for a given region represents a collection of all detected and localized earthquakes and, thus, contains not only the main shocks, but also fore- and aftershocks. In order to perform an independent seismic event and seismic hazard analysis we require a catalog that, ideally, contains only mainshocks. Thus, the removal of
Jonas Köhler, Wei Li, Johannes Faber, Georg Rümpker, Horst Stöcker, Nishtha Srivastava   +5 more
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Local Statistics of Earthquake Catalogs

1972
In analyzing earthquake catalogs one encounters the problem of distinguishing earthquakes whose occurrence is related to previous earthquakes. This paper investigates the first part of the problem: proof of the existence of interrelated earthquakes (not simply in the trivial case of aftershocks).
V. I. Keilis-Borok, V. M. Podgaetskaya, A. G. Prozorov   +2 more
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A catalog of earthquake related sounds

Bulletin of the Seismological Society of America, 1974
Abstract The paper is a catalog of 13 known recordings of earthquake related sounds, including circumstances relevant to the recordings. Reproductions of the recordings are also part of the paper.
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Assessment of the completeness of earthquake catalogs

Geosciences Journal, 2018
Since earthquake catalogs are not complete over the magnitude range covered, one should check the completeness of catalogs before any use. To this end, I propose a new method based on the Chi-square test to assess the completeness of earthquake catalogs. The performance of the method was tested using simulated earthquake catalogs.
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Certain problems related to earthquakes’ catalogs

2023
The quality of the earthquakes’ catalogs plays the most important role in the study of seismicity, of active faults, in seismic hazard and risk assessment, etc. The quality of the catalog is evaluated by the absence of duplicate records or explosions in itself.
Vahan Davtyan, Armen Kazarian, Haik Kazarian   +2 more
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