Rupture process of large earthquakes in the northern Mexico subduction zone

Ruff, Larry J.; Miller, Angus D.

doi:10.1007/bf00875970

Cited by 60 publications

(40 citation statements)

References 71 publications

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“…We compare the fault rupture pattern for the Petatlan earthquake obtained by recent P-wave modelling studies (Singh & Mortera 1991;Ruff & Miller 1994;Mendoza 1995) with that inferred from the study of the foreshock-aftershock sequence (Valdes et al 1982;Novelo-Casanova 1983;Novelo-Casanova et al 1984;Hsu et al 1985). The solution provided by the locally recorded data agrees well with the source properties estimated by Singh & Mortera (1991) and Mendoza (1995).…”

Section: Introductionsupporting

confidence: 64%

“…This conclusion does not contradict that of either Chael & Stewart (1982) or Ruff & Miller (1994). For other large earthquakes, however, the local seismicity may be inconsistent with the inferred rupture history.…”

Section: Discussioncontrasting

confidence: 48%

“…His results indicate that the P-wave source area involved two regions of large slip, which is consistent with the multiple source suggested by Singh & Mortera (1991). Table 1 gives the source parameters obtained by Chael & Stewart (1982), Singh & Mortera (1991), Ruff & Miller (1994), Mendoza (1995), and those inferred from local records of the pre-and post-seismic activity associated with the Petatlan earthquake. Station parameters, recordings and processing of the local network data were reported by Gettrust et al (1981) and Ewing & Meyer (1982).…”

Section: The Petatlan Earthquakementioning

confidence: 99%

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Correlation between the fault rupture pattern and associated microseismic activity of the Petatlan earthquake

Novelo‐Casanova

1995

Geophysical Journal International

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The fault rupture pattern of the 1979 March 14, Petatlan, Mexico, earthquake (M,=7.6) was analysed in previous studies using local and teleseismic data. Here, we demonstrate that the local data are consistent with the complex source of this event inferred from recent P-wave inversion studies. The result is particulary important since this correlation is obtained from the analysis of the pre-and post-seismic activity as recorded by a local array. Although local seismic records are unable to establish the rupture complexity of a mainshock, the foreshock and aftershock activity of the Petatlan earthquake provided some of the source characteristics of this event.

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Section: Introductionsupporting

confidence: 64%

Section: Discussioncontrasting

confidence: 48%

Section: The Petatlan Earthquakementioning

confidence: 99%

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Correlation between the fault rupture pattern and associated microseismic activity of the Petatlan earthquake

Novelo‐Casanova

1995

Geophysical Journal International

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“…For each event, we use a multi-station deconvolution procedure using both P and SH waves to determine a source time function at a particular depth (Figure 2) [e.g., Ruff and Miller, 1994;Bilek and Lay, 2002;Bilek et al, 2011]. The procedure is repeated for a range of depths (3-65 km in 1 km increments), consistent with expected depth range of seismogenic behavior on a subduction megathrust.…”

Section: Data Set and Methodsmentioning

confidence: 99%

Spatial variations in earthquake source characteristics within the 2011 Mw = 9.0 Tohoku, Japan rupture zone

Bilek¹,

DeShon²,

Engdahl³

2012

Geophysical Research Letters

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The great Mw = 9.0 2011 Tohoku earthquake appears to have complex rupture characteristics, with slower rupture velocity during the early portion of the rupture and spatial variations in the radiation frequency content. These spatial and temporal variations suggest that the subduction zone fault has spatially varying friction conditions that led to differences in the 2011 rupture characteristics, conditions that might also affect other earthquakes within the rupture zone. We find spatial variations for source parameters of 90 relocated earthquakes between 1992 and 2011 along northern Japan, with longer durations observed in shallow near trench events relative to shorter duration deeper events. A majority of these events do not lie within the high slip zone of 2011, however, and occur instead in the region of the 1896 tsunami earthquake to the north. We also find correlation between the longest duration event locations and low seismic velocities based on recent tomography models.

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“…Rather than inverting single station records, we chose instead to invert multiple azimuthally distributed records simultaneously, as this reduces the trade-offs between the source depth and the source duration (TICHELAAR and RUFF, 1991;CHRISTENSEN and RUFF, 1985). For further details of the inversion process, see RUFF (1989); RUFF and MILLER (1994); TICHELAAR and RUFF (1991).…”

Section: Methodsmentioning

confidence: 99%

Comparison of Depth Dependent Fault Zone Properties in the Japan Trench and Middle America Trench

Bilek¹,

Lay²

1999

Pure and Applied Geophysics

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Spatial variations in mechanical properties of the interplate thrust faults along the Japan and Middle America subduction zones are examined using teleseismic broadband earthquake recordings. Moment-normalized source duration is used to probe rigidity variations along the interface. We invert body waves to estimate source depth and source duration for 40 events in the Japan subduction zone and 38 events in the Middle America subduction zone. For both areas, there is a systematic decrease in source duration with increasing depth along the subduction zone interface. This is most likely a result of variation in properties of sediments on the plate contact. Variations in source duration are greatly reduced at depths greater than 18 km in both regions. Enhanced spatial heterogeneity at shallow depth may reflect variations in plate roughness, sediment distribution, permeability of the fault zone, and stress.

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Rupture process of large earthquakes in the northern Mexico subduction zone

Abstract: The Cocos plate subducts beneath North America at the Mexico trench. The northernmost segment of this trench, between the Orozco and Rivera fracture zones, has ruptured in a sequence of five large earthquakes

Cited by 60 publications

References 71 publications

Correlation between the fault rupture pattern and associated microseismic activity of the Petatlan earthquake

Correlation between the fault rupture pattern and associated microseismic activity of the Petatlan earthquake

Spatial variations in earthquake source characteristics within the 2011 Mw = 9.0 Tohoku, Japan rupture zone

Comparison of Depth Dependent Fault Zone Properties in the Japan Trench and Middle America Trench

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