Search Results - "Dragert, Herb"
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Episodic Tremor and Slip on the Cascadia Subduction Zone: The Chatter of Silent Slip
Published in Science (American Association for the Advancement of Science) (20-06-2003)“…We found that repeated slow slip events observed on the deeper interface of the northern Cascadia subduction zone, which were at first thought to be silent,…”
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Temporal evolution of an episodic tremor and slip event along the northern Cascadia margin
Published in Journal of Geophysical Research (01-12-2011)“…Episodic tremor and slip (ETS) have now been observed along the northern Cascadia margin for over 15 years. Recent densification of GPS coverage and the…”
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Northern Cascadia episodic tremor and slip: A decade of tremor observations from 1997 to 2007
Published in Journal of Geophysical Research. B. Solid Earth (01-11-2009)“…We analyze continuous seismic and GPS records collected in the last decade (1997–2007) to establish the most comprehensive observational basis for northern…”
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A Silent Slip Event on the Deeper Cascadia Subduction Interface
Published in Science (American Association for the Advancement of Science) (25-05-2001)“…Continuous Global Positioning System sites in southwestern British Columbia, Canada, and northwestern Washington state, USA, have been moving landward as a…”
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Estimating seismic moment magnitude (Mw) of tremor bursts in northern Cascadia: Implications for the "seismic efficiency" of episodic tremor and slip
Published in Geophysical research letters (01-10-2010)“…We develop a method to estimate the seismic moments of deep non‐volcanic tremor bursts observed in northern Cascadia. For each tremor burst, the maximum…”
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A wide depth distribution of seismic tremors along the northern Cascadia margin
Published in Nature (11-08-2005)“…The Cascadia subduction zone is thought to be capable of generating major earthquakes with moment magnitude as large as Mw = 9 at an interval of several…”
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Characterizing an “uncharacteristic” ETS event in northern Cascadia
Published in Geophysical research letters (01-08-2008)“…GPS and borehole strainmeter data allowed the detection and model characterization of a slow slip event in northern Cascadia in November 2006 accompanying a…”
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Spatial-temporal patterns of seismic tremors in northern Cascadia
Published in Journal of Geophysical Research - Solid Earth (01-03-2006)“…We study in detail the two consecutive episodic tremor‐and‐slip (ETS) events that occurred in the northern Cascadia subduction zone during 2003 and 2004. For…”
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Migration characteristics of seismic tremors in the northern Cascadia margin
Published in Geophysical research letters (01-02-2007)“…Seismic waveforms from a dense regional array were analyzed to study episodic tremor‐and‐slip (ETS) events in northern Cascadia. The April 2005 episode…”
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Automatic detection and characterization of seismic tremors in northern Cascadia
Published in Geophysical research letters (28-08-2007)“…We develop an algorithm that automatically detects and characterizes seismic waveforms associated with episodic tremor and slip (ETS) events in northern…”
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Current tectonics of northern Cascadia from a decade of GPS measurements
Published in Journal of Geophysical Research - Solid Earth (01-12-2003)“…Global Positioning System (GPS) measurements to study regional deformation were initiated in northern Cascadia in the late 1980s and early 1990s. On the basis…”
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GPS-determination of along-strike variation in Cascadia margin kinematics: Implications for relative plate motion, subduction zone coupling, and permanent deformation
Published in Tectonics (Washington, D.C.) (01-04-2001)“…High‐precision GPS geodesy in the Pacific Northwest provides the first synoptic view of the along‐strike variation in Cascadia margin kinematics. These results…”
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Precise GPS/Acoustic positioning of seafloor reference points for tectonic studies
Published in Physics of the earth and planetary interiors (30-06-1998)“…Global networks for crustal strain measurement provide important constraints for studies of tectonic plate motion and deformation. To date, crustal strain…”
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Three-dimensional viscoelastic interseismic deformation model for the Cascadia subduction zone
Published in Earth, planets, and space (01-01-2001)“…Contemporary deformation of the Cascadia forearc consists of an elastic interseismic strain build-up as part of the subduction earthquake deformation “cycle”…”
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Tectonic deformation in western Washington from continuous GPS measurements
Published in Geophysical research letters (15-10-1999)“…The analysis of 3 years of continuous data from 7 permanent GPS stations along the western Washington section of the Cascadia Subduction Zone indicates that…”
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Mediating Plate Convergence
Published in Science (American Association for the Advancement of Science) (26-01-2007)“…Movement of Earth's tectonic plates generates low-frequency seismic events. These events are not background noise, but represent slower and deeper earthquakes…”
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Geophysics. Mediating plate convergence
Published in Science (American Association for the Advancement of Science) (26-01-2007)Get full text
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GPS deformation in a region of high crustal seismicity: N. Cascadia forearc
Published in Earth and planetary science letters (30-04-2002)“…We estimate the rate of crustal deformation in the central and northern Cascadia forearc based on a combination of existing global positioning system (GPS)…”
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Ocean loading corrections for continuous GPS: A case study at the Canadian coastal site Holberg
Published in Geophysical research letters (15-07-2000)“…The continuous GPS stations of the Western Canada Deformation Array (WCDA) are subject to movements due to the loading of the lithosphere by ocean tides. Using…”
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