Journal article

Rapid, continuous streaking of tremor in Cascadia

Yamashita Y, Yakiwara H, Asano Y, Shimizu H, Uchida K, Hirano S, Umakoshi K, Miyamachi H, Nakamoto M, Fukui M, Kamizono M, Kanehara H, Yamada T, Shinohara M, Obara K, Sun W, Peng Z, Lin C, Chao K, Houston H, Shelly D, Hardebeck J, Bartlow N, Wallace L, Beavan R, Bannister S, Segall P, Brodsky E, Mori J, Peng Z, Vidale J, Wech A, Nadeau R, Creager K, Shelly D, Peng Z, Hill D, Aiken C, Beeler N, Thomas A, Bürgmann R, Shelly D, Beeler N, Rudolph M, Ito Y, Obara K, Shiomi K, Sekine S, Ghosh A, Vidale J, Sweet J, Creager K, Wech A, Houston H, Brodsky E, Peng Z, Creager K, Houston H, Rubinstein J, La Rocca M, Vidale J, Creager K, Wech A, Thomas A, Nadeau R, Bürgmann R, Shelly D, Watanabe T, Hiramatsu Y, Obara K, Ferrick M, Qamar A, Lawrence W, Julian B, Solé R, Valverde S, Casals M, Kauffman S, Farmer D, Eldredge N, Beroza G, Ide S, Veveakis E, Poulet T, Alevizos S, Becker T, Cetin E, Cakir Z, Meghraoui M, Ergintav S, Akoglu A, Kostić S, Franović I, Perc M, Vasović N, Todorović K, Ariyoshi K, Hori T, Ampuero J, Kaneda Y, Matsuzawa T, Hino R, Hasegawa A, Richards-Dinger K, Dieterich J, Shibazaki B, Obara K, Matsuzawa T, Hirose H, Colella H, Dieterich J, Richards-Dinger K, Rubin A, Ader T, Ampuero J, Avouac J, Ben-zion Y, Daub E, Shelly D, Guyer R, Johnson P, Julian B, Gao H, Schmidt D, Ii R, Shelly D, Johnsen J, Dansgaard W, White J, Johnsen S, Dansgaard W, Mariotti A, Craig H, Horibe Y, Sowers T, Schwander J, Sheets I, Oeschger H, Chapman S, Cowling T, Mathematical T, Leuenberger M, Lang C, Schwander J, Vries A, Phillpot H, Zillman J, Hutterli M, Ro R, Bales R, Johnsen S, Hammer C, Jouzel J, Charles C, Brook E, Sowers T, Orchardo J, Dragert H, Wang K, Rogers G, Spontaneous J, Matsuzawa T, Hirose H, Shibazaki B, Obara K, Tse S, Rice J, Rubinstein J, Shelly D, Ellsworth W, Rogers G, Dragert H, Peng Z, Gomberg J, Ozawa S, Gomberg J, Group B, Bedrosian P, Bodin P, Bostock M, Brudzinski M, Creager K, Dragert H, Egbert G, Ghosh A, Henton J, Kao H, Mccrory P, Melbourne T, Peacock S, Roeloffs E, Rubinstein J, Schmidt D, Trèhu A, Vidale J, Wech A, Schwartz S, Rokosky J, Ide S, Imanishi K, Yoshida Y, Beroza G, Shelly D, Kato A, Ito Y, Hino R, Kido M, Fujimoto H, Osada Y, Inazu D, Delahaye E, Townend J, Reyners M, Rogers G, Ohta Y, Freymueller J, Hreinsdóttir S, Suito H, Mitsui N, Hirahara K ...see all

Journal of Geophysical Research: Solid Earth, vol. 39, issue May (2010) pp. 1-5 Published by Nature Publishing Group

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We perform a systematic survey of triggered tremor along the San Andreas Fault in central California for the 31 teleseismic earthquakes with Mw 7.5 since 2001. We identify 10 teleseismic events associated with clear triggered tremor. About 52% of the tremor is concentrated south of Parkfield near Cholame, where ambient tremor has been identified previously, and the rest is widely distributed in the creeping section of the San Andreas Fault north of Parkfield. Tremor is generally initiated and is in phase with the Love wave particle velocity. However, the pattern becomes complicated with the arrival of the Rayleigh waves, and sometimes tremor continues after the passage of the surface waves. We identify two cases in which tremor is triggered during the teleseismic PKP phase. These results suggest that while shear stress from the passage of the Love waves plays the most important role in triggering tremor in central California, other factors, such as dilatational stresses from the Rayleigh and P waves, also contribute. We also examine the ambient tremor occurrence rate before and after the teleseismic events and find a transient increase of stacked tremor rate during the passage of the teleseismic surface waves. This observation implies that the occurrence time of tremor is temporally advanced by the dynamic stresses of the teleseismic waves. The amplitude of the teleseismic waves correlates with the occurrence of triggered tremor, and the inferred tremor-triggering threshold is 23 kPa. The relatively low triggering threshold indicates that the effective stress at the tremor source region is very low, most likely due to near-lithostatic fluid pressure.

Author-supplied keywords

  • 1 i n t
  • 10
  • 10.1002/2013JB010609 and Hikurangi
  • 1029
  • 1964 prince william sound
  • 2007
  • 2007gl030917
  • 34
  • Baikal Rift Zone
  • Cascadia subduction zone
  • Chain reaction
  • Earthquake triggering
  • Geocomplexity and the Physics of Earthquakes
  • Geoph
  • Mw 9.2 2004 Sumatra earthquake
  • New Zealand
  • Non-volcanic deep low-frequency tremors
  • Ocean-bottom pressure
  • Rate and state dependent friction law
  • Rupture propagation process
  • San Andreas Fault near Parkfield
  • San Andreas fault
  • Slow slip event
  • Slow slip events
  • Subduction zone
  • The 2011 Tohoku-Oki earthquake
  • Volumetric strain
  • a rate- and state-dependent friction law
  • accepted 24 july 2007
  • alaska trench
  • and prediction
  • aseismic strain transient
  • broadband seismogram
  • brodsky 1 and james
  • cascadia margin
  • chemical reactions
  • convergence
  • creep
  • creep events slip less
  • crustal deformation
  • culturomics
  • dip angle
  • doi
  • doi:10.
  • doi:10.102
  • doi:10.1029/2006RG000208
  • doi:10.1029/2007GL029391
  • doi:10.1029/2008GL034014
  • doi:10.1029/2008JB006049
  • doi:10.1029/2008JB006062
  • doi:10.1029/2010JB007566
  • doi:10.1029/9
  • doi:10.1029/JB091iB09p09452
  • earthquake
  • earthquake dynamics
  • earthquake interaction
  • emily e
  • ets
  • evolution
  • fault zones
  • faulting
  • faults
  • fluid flow
  • following the early discoveries
  • forecasting
  • frequency tremors
  • friction
  • geodesy
  • gps
  • hazards
  • information technology
  • interplate coupling
  • l16309
  • law
  • low frequency earthquakes
  • low-frequency tremors
  • lower crustal intrusions
  • migration
  • modeling
  • mori 2
  • non&hyphen
  • non-volcanic tremor
  • non-volcanic tremors
  • nonlinear phenomena
  • nonvolcanic tremor
  • numerical simulation
  • nvt
  • of non-volcanic tremor
  • period doubling
  • phase transitions
  • physical research letters
  • published 24 august 2007
  • rate- and state-dependent friction
  • rate-and-state friction
  • ray tracing
  • received 8 june 2007
  • refraction seismology
  • revised 9 july 2007
  • rheology and friction of
  • ro d u c
  • scale bound source process
  • scaling
  • seismic cycle
  • seismic energy
  • seismogenic zone
  • slow earthquakes
  • slow slip
  • slow slip event
  • slow slip events
  • slow-slip events
  • spatiotemporal distribution
  • statistical seismology
  • stress correlation
  • subduction
  • subduction zone
  • t i o n
  • technology
  • tectonics
  • than ordinary earthquakes
  • the Kii Peninsula and Tokai regions
  • tidal triggering
  • tinkering
  • tomography
  • transition zone
  • tremor
  • tremor streak
  • vol
  • volcanic deep low&hyphen
  • volcanic earthquakes and tremor

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  • Y Yamashita

  • H Yakiwara

  • Y Asano

  • H Shimizu

  • K Uchida

  • S Hirano

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