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A New Model for the Distribution of Observable Earthquake Magnitudes and Applications to b-Value Estimation
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Matematiska vetenskaper. Department of Mining Technology, Luossavaara-Kiirunavaara AB, 98381 Malmberget.ORCID-id: 0000-0002-6289-4949
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Matematiska vetenskaper.ORCID-id: 0000-0001-7656-7271
2018 (engelsk)Inngår i: IEEE Geoscience and Remote Sensing Letters, ISSN 1545-598X, E-ISSN 1558-0571, Vol. 15, nr 6, s. 833-837Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The b-value in the Gutenberg–Richter (GR) law contains information that is essential for evaluating earthquake hazard and predicting the occurrence of large earthquakes. Estimates of b are often based on seismic events whose magnitude exceed a certain threshold, the so-called magnitude of completeness. Such estimates are sensitive to the choice of threshold and often ignore a substantial portion of available data. We present a general model for the distribution of observable earthquake magnitudes and an estimation procedure that takes all measurements into account. The model is obtained by generalizing previous probabilistic descriptions of sensor network limitations and using a generalization of the GR law. We show that our model is flexible enough to handle spatio-temporal variations in the seismic environment and captures valuable information about sensor network coverage. We also show that the model leads to significantly improved b-value estimates compared with established methods relying on the magnitude of completeness.

sted, utgiver, år, opplag, sider
IEEE, 2018. Vol. 15, nr 6, s. 833-837
HSV kategori
Forskningsprogram
Matematisk statistik
Identifikatorer
URN: urn:nbn:se:ltu:diva-69044DOI: 10.1109/LGRS.2018.2812770ISI: 000432958000007Scopus ID: 2-s2.0-85044388582OAI: oai:DiVA.org:ltu-69044DiVA, id: diva2:1212330
Merknad

Validerad;2018;Nivå 2;2018-06-05 (rokbeg)

Tilgjengelig fra: 2018-06-01 Laget: 2018-06-01 Sist oppdatert: 2018-09-14bibliografisk kontrollert

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