About: Determination and uncertainty of moment tensors for microearthquakes at Okmok Volcano, Alaska

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Efforts to determine general moment tensors (MTs) for microearthquakes in volcanic areas are often hampered by small seismic networks, which can lead to poorly constrained hypocentres and inadequate modelling of seismic velocity heterogeneity. In addition, noisy seismic signals can make it difficult to identify phase arrivals correctly for small magnitude events. However, small volcanic earthquakes can have source mechanisms that deviate from brittle double-couple shear failure due to magmatic and/or hydrothermal processes. Thus, determining reliable MTs in such conditions is a challenging but potentially rewarding pursuit. We pursued such a goal at Okmok Volcano, Alaska, which erupted recently in 1997 and in 2008. The Alaska Volcano Observatory operates a seismic network of 12 stations at Okmok and routinely catalogues recorded seismicity. Efforts to determine general moment tensors (MTs) for microearthquakes in volcanic areas are often hampered by small seismic networks, which can lead to poorly constrained hypocentres and inadequate modelling of seismic velocity heterogeneity. In addition, noisy seismic signals can make it difficult to identify phase arrivals correctly for small magnitude events. However, small volcanic earthquakes can have source mechanisms that deviate from brittle double-couple shear failure due to magmatic and/or hydrothermal processes. Thus, determining reliable MTs in such conditions is a challenging but potentially rewarding pursuit. We pursued such a goal at Okmok Volcano, Alaska, which erupted recently in 1997 and in 2008. The Alaska Volcano Observatory operates a seismic network of 12 stations at Okmok and routinely catalogues recorded seismicity. (en)
Title	Determination and uncertainty of moment tensors for microearthquakes at Okmok Volcano, Alaska Determination and uncertainty of moment tensors for microearthquakes at Okmok Volcano, Alaska (en)
skos:prefLabel	Determination and uncertainty of moment tensors for microearthquakes at Okmok Volcano, Alaska Determination and uncertainty of moment tensors for microearthquakes at Okmok Volcano, Alaska (en)
skos:notation	RIV/67985530:_____/12:00379890!RIV13-AV0-67985530
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP210/12/2235), Z(AV0Z30120515)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Šílený, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Geofyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	130551
http://linked.open...ai/riv/idVysledku	RIV/67985530:_____/12:00379890
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	earthquake source observations; volcano seismology; body waves (en)
http://linked.open.../riv/klicoveSlovo	body waves earthquake source observations volcano seismology
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[B49FE33825DE]
http://linked.open...i/riv/nazevZdroje	Geophysical Journal International
http://linked.open...in/vavai/riv/obor	DC
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Constrained models of seismic source: in between a double-couple and moment tensor
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	190
http://linked.open...iv/tvurceVysledku	Šílený, Jan Pesicek, J. D. Prejean, S. G. Thurber, C. H.
http://linked.open...ain/vavai/riv/wos	000307571100029
http://linked.open...n/vavai/riv/zamer	Study of the internal structure and dynamics of the Earth
issn	0956-540X
number of pages	21 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/j.1365-246X.2012.05574.x

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