A comparative study of low frequency earthquake templates in northern Cascadia

Earth and Planetary Science Letters

Volumn 402, Issue C, 2014, Pages 247-256

  Royer, A A ^a   Bostock, M G ^a  

^a UNIVERSITY OF BRITISH COLUMBIA   (Canada)

Author keywords

Cascadia subduction zone; Intraplate seismicity; Low frequency earthquakes; Moment tensor inversion; Plate boundary; Tremor

Indexed keywords

CORRELATION METHODS; SEISMOGRAPHS; SEISMOLOGY; SIGNAL TO NOISE RATIO; TENSORS;

CASCADIA SUBDUCTION ZONE; INTRAPLATE SEISMICITY; LOW-FREQUENCY EARTHQUAKES; MOMENT TENSOR INVERSION; PLATE BOUNDARIES; TREMOR;

EARTHQUAKES;

EID: 84926279142     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2013.08.040     Document Type: Article

References (34)

1. Abers G.A., MacKenzie L.S., Rondenay S., Zhang Z., Wech A.G., Creager K.C. Imaging the source region of Cascadia tremor and intermediate-depth earthquakes. Geology 2009, 37:1119-1122. 10.1130/G30143A.1..
2. Audet P., Bostock M.G., Boyarko D.C., Brudzinski M.R., Allen R.M. Slab morphology in the Cascadia forearc and its relation to episodic tremor and slip. J. Geophys. Res. 2010, 115:B00A16. 10.1029/2008JB006053..
3. Audet P., Bostock M.G., Mercier J.P., Cassidy J.F. Morphology of the Explorer-Juan de Fuca slab edge in northern Cascadia: Imaging plate capture at a ridge-trench-transform triple junction. Geology 2008, 36:895-898. 10.1130/G25356A.1..
4. Booth D.C., Crampin S. Shear wave polarization on a curved wavefront at an isotropic free surface. Geophys. J. R. Astron. Soc. 1985, 83:31-45.
5. Bostock M.G. The Moho in subduction zones. Tectonophysics 2012, 10.1016/j.tecto.2012.07.007..
6. Bostock M.G., Christensen N.I. Split from slip and schist: Crustal anisotropy beneath northern Cascadia from non-volcanic tremor. J. Geophys. Res. 2012, 117:B08303. 10.1029/2011JB009095..
7. Bostock M.G., Royer A.A., Hearn E.H., Peacock S.M. Low frequency earthquakes below southern Vancouver Island. Geochem. Geophys. Geosyst. 2012, 13:11. 10.1029/2012GC004391..
8. Braunmiller J., Nabelek J. Seismotectonics of the Explorer region. J. Geophys. Res. 2002, 107. 10.1029/2001JB000220..
9. Brown J.R., Beroza G.C., Shelly D.R. An autocorrelation method to detect low frequency earthquakes within tremor. Geophys. Res. Lett. 2008, 38:L16305. 10.1029/2008JL034560..
10. Calkins J.A., Abers G.A., Ekström G., Creager K.C., Rondenay S. Shallow structure of the Cascadia subduction zone beneath western Washington from spectral ambient noise correlation. J. Geophys. Res. 2011, 116:B07302. 10.1029/2010JB007657..
11. Cerveny V., Klimes L., Psencik I. Complete seismic ray tracing in complex 3-d structures. Seismological Algorithms 1987, 89-168. Academic Press, New York. D. Doornbos (Ed.).
12. Frank W.B., Shapiro N.M., Kostoglodov V., Husker A.L., Campillo M., Payero J.S., Prieto G.A. Low-frequency earthquakes in the Mexican Sweet Spot. Geophys. Res. Lett. 2013, 40:2661-2666. 10.1002/grl.50561..
13. Ghosh A., Vidale J.E., Sweet J., Creager K.C., Wech A., Houston H., Brodsky E. Rapid, continuous streaking of tremor in Cascadia. Geochem. Geophys. Geosyst. 2010, 11. 10.1029/2010GC003305..
14. Gibbons S.J., Ringdal F. The detection of low magnitude seismic events using array-based waveform correlation. Geophys. J. Int. 2006, 165:149-166. 10.1111/j.1365-246X.2006.02865.x..
15. Hansen R.T.J., Bostock M.G., Christensen N.I. Nature of the low velocity zone in Cascadia from receiver function waveform inversion. Earth Planet. Sci. Lett. 2012, 337-338:25-38. 10.1016/j.epsl.2012.05.031..
16. Ide S., Shelly D.R., Beroza G.C. Mechanism of deep low frequency earthquakes: Further evidence that deep non-volcanic tremor is generated by shear slip on the plate interface. Geophys. Res. Lett. 2007, 34:L03308. 10.1029/2006GL028890..
17. Kao H., Shan S.J., Dragert H., Rogers G. Northern Cascadia episodic tremor and slip: A decade of tremor observations from 1997 to 2007. J. Geophys. Res. 2009, 114. 10.1029/2008JB006046..
18. Kao H., Shan S.J., Dragert H., Rogers G., Cassidy J.F., Ramachandran K. A wide depth distribution of seismic tremors along the northern Cascadia margin. Nature 2005, 436:841-844. 10.1038/nature03903..
19. Kikuchi M., Kanamori H. Inversion of complex body waves - III. Bull. Seismol. Soc. Am. 1991, 81:2335-2350.
20. Klein F.W. User's Guide to HYPOINVERSE-2000, a Fortran Program to Solve for Earthquake Locations and Magnitudes 2002, U.S. Geol. Surv. Open File Rep. 02-171.
21. Kumar P., Kind R., Yuan X. Receiver function summation without deconvolution. Geophys. J. Int. 2010, 180:1223-1230. 10.1111/j.1365-246X.2009.04469.x..
22. McCaffrey R.A., Qamar A., King R., Wells R., Khazaradze G., Williams C., Stevens C., Vollick J., Zwick P. Fault locking, block rotation and crustal deformation in the Pacific Northwest. Geophys. J. Int. 2007, 169:1315-1340. 10.1111/j.1365-246X.2007.03371.x..
23. McCrory P.A., Blair J.L., Waldhauser F., Oppenheimer D.H. Juan de Fuca slab geometry and its relation to Wadati-Benioff zone seismicity. J. Geophys. Res. 2012, 117:B09306. 10.1029/2012JB009407..
24. Nowack R.L., Bostock M.G. Scattered waves from low frequency earthquakes and plate boundary structure in northern Cascadia. Geophys. Res. Lett. 2013, 40. 10.1002/grl.50826..
25. Obara K. Nonvolcanic deep tremor associated with subduction in southwest Japan. Science 2002, 296:1679-1681. 10.1126/science.1070378..
26. Rogers G., Dragert H. Episodic tremor and slip on the Cascadia subduction zone: The chatter of silent slip. Science 2003, 300:1942-1943. 10.1126/science.1084783..
27. Rowe C.A., Aster R.C., Borchers B., Young C.J. An automatic, adaptive algorithm for refining phase picks in large seismic data sets. Bull. Seismol. Soc. Am. 2002, 92:1660-1674. 10.1785/0120010224..
28. Shearer P.M. Imaging global body wave phases by stacking long-period seismograms. J. Geophys. Res. 1991, 96:20353-20364. 10.1029/91JB00421..
29. Shelly D.R., Beroza G.C., Ide S. Non-volcanic tremor and low-frequency earthquake swarms. Nature 2007, 446:305-307. 10.1038/nature05666..
30. Shelly D.R., Beroza G.C., Ide S., Nakamura S. Low-frequency earthquakes in Shikoku, Japan, and their relationship to episodic tremor and slip. Nature 2006, 442:188-191. 10.1038/nature04931..
31. Shelly D.R., Hardebeck J.L. Precise tremor source locations and amplitude variations along the lower-crustal central San Andreas Fault. Geophys. Res. Lett. 2010, 37. 10.1029/i2010GL043672..
32. Waldhauser F. hypoDD - A Program to Compute Double-Difference Hypocenter Locations 2001, U.S. Geol. Surv. Open File Rep. 1-113.
33. Wech A.G., Creager K.C. A continuum of stress, strength and slip in the Cascadia subduction zone. Nat. Geosci. 2011, 4:624-628. 10.1038/ngeo1215..
34. Wech A.G., Creager K.C., Melbourne T.I. Seismic and geodetic constraints on Cascadia slow slip. J. Geophys. Res. 2009, 114. 10.1029/2008JB006090.