The ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009): Introduction

Storchak, Dmitry A.; Giacomo, Domenico Di; Engdahl, E. R.; Harris, James M.; Bondár, István; Lee, William H. K.; Bormann, Peter; Villaseñor, Antonio

doi:10.1016/j.pepi.2014.06.009

Cited by 174 publications

(108 citation statements)

References 42 publications

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“…Instrumental Earthquake Catalogue (Storchak et al, 2012) relocated 19,000 earthquakes during 1900-2009; it is the result of a special effort to adapt and substantially extend and improve currently existing bulletin data. A million phase records were digitized, and all earthquakes were relocated using Bondár and Storchak (2011).…”

Section: Postmainshock Quiescencementioning

confidence: 99%

The Profound Reach of the 11 April 2012 M 8.6 Indian Ocean Earthquake: Short-Term Global Triggering Followed by a Longer-Term Global Shadow

Pollitz

Bürgmann

Stein

et al. 2014

Bulletin of the Seismological Society of America

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The 11 April 2012 M 8.6 Indian Ocean earthquake was an unusually large intraoceanic strike-slip event. For several days, the global M ≥ 4:5 and M ≥ 6:5 seismicity rate at remote distances (i.e., thousands of kilometers from the mainshock) was elevated. The strike-slip mainshock appears through its Love waves to have triggered a global burst of strike-slip aftershocks over several days. But the M ≥ 6:5 rate subsequently dropped to zero for the succeeding 95 days, although the M ≤ 6:0 global rate was close to background during this period. Such an extended period without an M ≥ 6:5 event has happened rarely over the past century, and never after a large mainshock. Quiescent periods following previous large (M ≥ 8) mainshocks over the past century are either much shorter or begin so long after a given mainshock that no physical interpretation is warranted. The 2012 mainshock is unique in terms of both the short-lived global increase and subsequent long quiescent period. We believe that the two components are linked and interpret this pattern as the product of dynamic stressing of a global system of faults. Transient dynamic stresses can encourage shortterm triggering, but, paradoxically, it can also inhibit rupture temporarily until background tectonic loading restores the system to its premainshock stress levels.

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Section: Postmainshock Quiescencementioning

confidence: 99%

The Profound Reach of the 11 April 2012 M 8.6 Indian Ocean Earthquake: Short-Term Global Triggering Followed by a Longer-Term Global Shadow

Pollitz

Bürgmann

Stein

et al. 2014

Bulletin of the Seismological Society of America

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“…As of this writing, the best long-term catalogs for Europe are the SHEEC (http://www.emidius.eu/SHEEC/) (SHARE European Earthquake Catalog, Stucchi et al 2012) from 1000 to 1899 and the ISC-GEM instrumental earthquake catalog (http:// www.isc.ac.uk/iscgem/) (Storchak et al 2013(Storchak et al , 2015Bondár et al 2015;Di Giacomo et al 2015a, b;Lee and Engdahl 2015) from 1900 to 2011. While the ISC-GEM catalog describes earthquakes only since the beginning of the twentieth century, it has properties that are both rare and desirable: its locations were estimated using the same method and velocity model, its magnitudes are on the same scale, and it reports location and magnitude errors.…”

Section: Challenges To European Oefmentioning

confidence: 99%

Operational earthquake forecasting in Europe: progress, despite challenges

Zechar

Marzocchi

Wiemer

2016

Bull Earthquake Eng

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Is Europe-wide operational earthquake forecasting (OEF) possible? We discuss the myriad problems that prevent it today, many of which relate to heterogeneities in earthquake recording, processing, and reporting. We contemplate the difficulty of building models that cross political boundaries, and we consider the prospect of European OEF in light of recent efforts to harmonize long-term seismic hazard assessment among several nations. Emphasizing the Strategies and Tools for Real-time Earthquake Risk Reduction (REAKT) project, we report achievements related to short-term seismicity forecasting in Iceland and Italy that could apply elsewhere in Europe. In Iceland, collaboration fostered by REAKT resulted in a revised earthquake catalog and a prototype OEF system. We report results from an experiment conducted with this prototype; these results suggest ensemble models provide an information gain, updating models more frequently improves their forecast skill, and that OEF is computationally feasible. In Italy, REAKT supported the creation of an ensemble model that now issues weekly hazard forecasts. We present examples of these forecasts, highlighting the problem that OEF often yields low probabilities, which are difficult to interpret and convert into actionable decisions. Motivated by such low hazard probabilities, we highlight Europe's pioneering efforts in operational earthquake loss forecasting and mention solutions to problems that currently prevent OEF at the European scale.

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“…Recientemente, se publicó el catálogo global instrumental homogéneo en Mw (Storchak, et al, 2013), y en ese ámbito de investigación se calibraron las relaciones de conversión de magnitudes de tipo exponencial (11) Las relaciones (11) y (12) podrían usarse con la debida precaución cuando m b >6,8 (Storchak, et al, 2012). Para el terremoto de Quetame del 2008, el valor calculado en el presente trabajo (5,6 m b ), convertido en magnitud momento usando las relaciones (11) y (12), fue de 5,7 Mw y 5,9 Mw, respectivamente.…”

Section: Comparación De M B Y Ms De Origen Macrosísmico Con Mwunclassified

“…Para finalizar el presente estudio, se propone un análisis de tipo DOFA (Jackson, et al, 2003) para corregir en futuros estudios las debilidades y amenazas de origen interno y (Storchak, et al, 2012) 5,7 satura m b -Mw relación 12 (Storchak, et al, 2012) 5,9 satura Ms -Mw, relación 13 (Storchak, et al, 2012) --…”

Section: Análisis Dofa Y Conclusionesunclassified

Localización y magnitud del terremoto de 1785 en Colombia calculadas a partir de intensidades macrosísmicas

Capera

Salcedo-Hurtado

Bindi³

et al. 2014

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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ResumenEl terremoto ocurrido el 12 de julio de 1785 en Colombia ha sido uno de los eventos sísmicos con mayor número de estudios macrosísmicos realizados a partir de documentos históricos. En la mayoría de estos estudios se le asigna un valor de VIII como intensidad máxima. Con base en el estudio de Salcedo Hurtado y Castaño Castaño (2011), y mediante el método de Bakun y Wentworth (1997) y la relación de atenuación de la intensidad macrosísmica propuesta por Gómez Capera y Salcedo Hurtado (2002), se calculó la magnitud m b = 6,9±0,2 y la localización del epicentro macrosísmico (4,78 latitud; -73,90 longitud) a 28 km de Bogotá. La validación de la relación de atenuación se realizó con los parámetros instrumentales del terremoto del 24 de mayo de 2008, localizado en la misma zona mesosísmica del sismo histórico aquí analizado.Palabras clave: estudio de terremoto histórico, intensidad macrosísmica, parámetros del terremoto. Calculation of the location and magnitude of the 1785 earthquake in Colombia based on macroseismic intensity data AbstractThe earthquake that hit Colombia on July 12, 1785, is one of the seismic events with the highest number of macroseismic studies based on historical sources. Most of these studies have assigned a maximum intensity of VIII to the event. Following the study of Salcedo Hurtado and Castaño Castaño (2011), and applying the Bakun and Wentworth (1997) method and the macroseismic intensity attenuation proposed by Gómez Capera and Salcedo Hurtado (2002), we calculated the magnitude m b = 6.9±0.2 and the macroseismic epicentre at 28 km from Bogotá. The validation of the attenuation model was performed with the instrumental parameters of the earthquake occurred on May 24, 2008, in the same region of the historical earthquake studied in the present article.

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The ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009): Introduction

Cited by 174 publications

References 42 publications

The Profound Reach of the 11 April 2012 M 8.6 Indian Ocean Earthquake: Short-Term Global Triggering Followed by a Longer-Term Global Shadow

The Profound Reach of the 11 April 2012 M 8.6 Indian Ocean Earthquake: Short-Term Global Triggering Followed by a Longer-Term Global Shadow

Operational earthquake forecasting in Europe: progress, despite challenges

Localización y magnitud del terremoto de 1785 en Colombia calculadas a partir de intensidades macrosísmicas

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