Geodetic and seismic signatures of episodic tremor and slip in the northern Cascadia subduction zone
Slip events with an average duration of about 10 days and effective total slip displacements of severalc entimetres have been detected on the deeper (25 to 45 km) part of the northern Cascadia subduction zone interface by observing transient surface deformation on a network of continuously recording...
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| Veröffentlicht in: | Earth, planets and space planets and space, 2004-01, Vol.56 (12), p.1143-1150 |
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| creator | DRAGERT, H WANG, K ROGERS, G |
| description | Slip events with an average duration of about 10 days and effective total slip displacements of severalc entimetres have been detected on the deeper (25 to 45 km) part of the northern Cascadia subduction zone interface by observing transient surface deformation on a network of continuously recording Global Positioning System (GPS) sites. The slip events occur down-dip from the currently locked, seismogenic portion of the subduction zone, and, for the geographic region around Victoria, British Columbia, repeat at 13 to 16 month intervals. These episodes of slip are accompanied by distinct, low-frequency tremors, similar to those reported in the forearc region of southern Japan. Although the processes which generate this phenomenon of episodic tremor and slip (ETS) are not well understood, it is possible that the ETS zone may constrain the landward extent of megathrust rupture, and conceivable that an ETS event could precede the next great thrust earthquake. |
| doi_str_mv | 10.1186/bf03353333 |
| format | Article |
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The slip events occur down-dip from the currently locked, seismogenic portion of the subduction zone, and, for the geographic region around Victoria, British Columbia, repeat at 13 to 16 month intervals. These episodes of slip are accompanied by distinct, low-frequency tremors, similar to those reported in the forearc region of southern Japan. Although the processes which generate this phenomenon of episodic tremor and slip (ETS) are not well understood, it is possible that the ETS zone may constrain the landward extent of megathrust rupture, and conceivable that an ETS event could precede the next great thrust earthquake.</description><identifier>ISSN: 1343-8832</identifier><identifier>ISSN: 1880-5981</identifier><identifier>EISSN: 1880-5981</identifier><identifier>DOI: 10.1186/bf03353333</identifier><language>eng</language><publisher>Tokyo: Terra</publisher><subject>Cosmochemistry. 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The slip events occur down-dip from the currently locked, seismogenic portion of the subduction zone, and, for the geographic region around Victoria, British Columbia, repeat at 13 to 16 month intervals. These episodes of slip are accompanied by distinct, low-frequency tremors, similar to those reported in the forearc region of southern Japan. Although the processes which generate this phenomenon of episodic tremor and slip (ETS) are not well understood, it is possible that the ETS zone may constrain the landward extent of megathrust rupture, and conceivable that an ETS event could precede the next great thrust earthquake.</description><subject>Cosmochemistry. 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| source | J-STAGE Free; Springer Nature OA Free Journals; Springer Nature - Complete Springer Journals; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Cosmochemistry. Extraterrestrial geology Earth sciences Earth, ocean, space Earthquakes Exact sciences and technology Global Positioning System Global positioning systems GPS Recording Satellite navigation systems Seismic activity Seismic analysis Slip Subduction (geology) Tremors |
| title | Geodetic and seismic signatures of episodic tremor and slip in the northern Cascadia subduction zone |
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