Closing crack earthquakes within the Krafla caldera, North Iceland
نویسندگان
چکیده
منابع مشابه
Focal mechanisms and size distribution of earthquakes beneath the Krafla central volcano, NE Iceland
Seismicity was monitored beneath the Krafla central volcano, NE Iceland, between 2009 and 2012 during a period of volcanic quiescence, when most earthquakes occured within the shallow geothermal field. The highest concentration of earthquakes is located close to the rock-melt transition zone as the IDDP-1 wellbore suggests, and decays quickly at greater depths. We recorded multiple swarms of mi...
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B. Riel,1 P. Milillo,1,2 M. Simons,1 P. Lundgren,3 H. Kanamori1 and S. Samsonov4 1Seismological Laboratory, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA. E-mail: [email protected] 2Scuola di Ingegneria, Università degli Studi della Basilicata, Viale dell’Ateneo Lucano 10, I-85100 Potenza, Italy 3Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA...
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Regional distance seismic moment tensor determinations and broadband waveforms of moment magnitude 4.6 to 4.9 earthquakes from a November 1997 Long Valley Caldera swarm, during an inflation episode, display evidence of anomalous seismic radiation characterized by non-double couple (NDC) moment tensors with significant volumetric components. Observed coseismic dilation suggests that hydrothermal...
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[1] We measure the displacement field resulting from the 1975–1984 Krafla rifting crisis, NE Iceland, using optical image correlation. Images are processed using the COSI-Corr software package. Surface extension is accommodated on normal faults and fissures which bound the rift zone, in response to dike injection at depth. Correlation of declassified KH-9 spy and SPOT5 satellite images reveals ...
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New and previously published micro-gravity data are combined with InSAR data, precise levelling and GPS measurements to produce a model for the processes operating at Krafla volcano, 20 years after its most recent eruption. The data have been divided into two periods: from 1990 to 1995 and from 1996 to 2003 and show that the rate of deflation at Krafla is decaying exponentially. The net micro-g...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2016
ISSN: 0956-540X,1365-246X
DOI: 10.1093/gji/ggw325