Evidence for shear-wave anisotropy in the mantle wedge beneath south central Alaska

Bulletin of the Seismological Society of America

Volumn 89, Issue 5, 1999, Pages 1313-1322

  Wiemer, Stefan ^a,b,c   Tytgat, Guy ^c   Wyss, Max ^c   Duenkel, Uwe ^c  

^a ETH ZURICH   (Switzerland)

^b METEOROLOGICAL RESEARCH INSTITUTE   (Japan)

^c UNIVERSITY OF ALASKA FAIRBANKS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACCRETIONARY PRISM; POLARIZATION; S-WAVE; SEISMIC ANISOTROPY; SEISMIC VELOCITY; VELOCITY STRUCTURE;

ALASKA; UNITED STATES;

EID: 0033500224     PISSN: 00371106     EISSN: None     Source Type: Journal    
DOI: 10.1785/bssa0890051313     Document Type: Article

References (52)

1. Ando, M., Y. Ishikawa, and F. Yamazaki (1983). Shear wave polarization anisotropy in the upper mantle beneath Honshu, Japan, J. Geophys. Res. 88, 5850-5864.
2. Biswas, N. N., and G. Tytgat (1988). Intraplate seismicity in Alaska, Seism. Res. Lett. 59, 227-233.
3. Booth, D. C., and S. Crampin (1985). Shear-wave polarization on a curved wavefront at an isotropic free-surface, Geophvs. J. R. Astr. Soc. 83, 31-45.
4. Bowman, J. R., and M. Ando (1987). Shear-wave splitting in the upper-mantle wedge above the Tonga subduction zone, Geophvs. J. R. Astr. Soc. 88, 25-41.
5. Brocher, T. M., and N. I. Christensen (1990). Seismic anisotropy due to preferred mineral orientation observed in shallow crustal rocks in southern Alaska, Geology 18, 737-740.
6. Christensen, N. I. (1984). The magnitude, symmetry, and origin of upper mantle anisotropy based on fabric analyses of ultramafic tectonites, Geophys. J. R. Astr. Soc. 76, 89-111.
7. Cohen, S. C., and J. T. Freymueller (1997). Deformation of the Kenai Peninsula. Alaska, J. Geophys. Res. 102, 20479-20487.
8. Crampin, S. (1985). Evaluation of anisotropy by shear-wave splitting. Geophysics 50, 142-152.
9. Crampin, S., and D. C. Booth (1989). Shear-wave splitting showing hydraulic dilation of preexisting joints in granite, Sci. Drilling 1, 21-26.
10. Crampin, S., and J. H. Lovell (1991). A decade of shear-wave splitting in the earth's crust: What does it mean? What use can we make of it? And what should we do next?, Geophys. J. Int. 107, 387-407.
11. Crampin, S., R. McGonigle, and M. Ando (1986). Extensive-dilatancy anisotropy beneath Mount Hood, Oregon, and the effect of aspect ratio on seismic velocities through aligned cracks, J. Geophys. Res. 91, 703-712.
12. DeMets, C., R. G. Gordon, D. F. Argus, and S. Stein (1990). Current plate motions, Geophys. J. Int. 101, 425-478.
13. Estabrook, C. H., and K. Jacob (1991). Stress indicators in Alaska, in Neotectonics of North America, Decade Map, D. B. Slemmons, R. E. Engdahl, M. D. Zoback, and D. D. Blackwell (Editors), Geological Society of America, Boulder, Colorado, 387-399.
14. Evans, J. R., B. R. Julian, G. R. Foulger, and A. Ross (1995). Shear wave splitting from local earthquakes at the Geysers geothermal field, California, Geophys. Res. Lett. 22, 501-504.
15. Fischer, K. M., and D. A. Wiens (1996). The depth distribution of mantle anisotropy beneath the Tonga subduction zone, Earth Planet. Sci. Lett. 142, 253-260.
16. Fischer, K. M., and X. Yang (1994). Anisotropy in Kuril-Kamshatka subduction zone structure, Geophys. Res. Lett. 21, 5-8.
17. Fletcher, H. J., and D. H. Christensen (1996). A determination of source properties of large intraplate earthquakes in Alaska, Pageoph 146, 21-41.
18. Fogleman, K. A., J. C. Lahr, C. D. Stephens, and R. A. Page (1993). Earthquake locations determined by the southern Alaska seismograph network for October 1971 through May 1989, in U.S. Geol. Surv. Open-File Rept. 93-309, 54 pp.
19. Fouch, M. J., and K. M. Fischer (1996). Mantle anisotropy beneath Northwestern Pacific subduction zones, J. Geophys. Res. 101, 15987-16002.
20. Fouch, M. J., and K. M. Fischer (1998). Shear-wave anisotropy in the Mariana subduction zone, Geophys. Res. Lett. 25, 1221-1224.
21. Gledhill, K. R. (1991). Evidence for shallow and pervasive seismic anisotropy in the Wellington region, New Zealand, J. Geophys. Res. 96, 21503-21516.
22. Gledhill, K., and G. Stuart (1996). Seismic anisotropy in the fore-arc region of the Kikurangi subduction zone. New Zealand, Phys. Earth Planet. Interiors 95, 211-225.
23. Kaneshima, S., and P. G. Silver (1995). Anisotropy loci in the mantle beneath Central Peru, Phys. Earth Planet. Interiors 88, 257-272.
24. Kaneshima, S., M. Ando, and S. Crampin (1987). Shear-wave splitting above small earthquakes in the Kinki District of Japan, Phys: Earth Planet. Interiors 45, 45-58.
25. Kaneshima, S., N. Maeda, and M. Ando (1990). Evidence for splitting of shear waves from waveform and focal mechanism analysis, Phys. Earth Planet Interiors 61, 238-252.
26. Karato, S. (1989). Defects and Plastic Deformation in divine: Rheology of Solids and of the Earth, Oxford Science Publications, Oxford, 176-208.
27. Kind, R., G. L. Kosarev, L. I. Makeyeva, and L. P. Vinnik (1985). Observations of laterally inhomogeneous anisotropy in the continental lithosphere, Nature 318, 358-361.
28. Lahr, J. C. (1989). HYPOELLIPSE/version 2.00: A computer program for determining local earthquakes hypocentral parameters, magnitude, and first motion pattern, U.S. Geol. Surv. Open-File Rept. 89-116, 92 pp.
29. Lahr, J. C., R. A. Page, and C. D. Stephens (1988). Unusual earthquakes in the Gulf of Alaska and fragmentation of the Pacific plate. Geophys. Res. Lett. 15, 1483-1486.
30. Lahr, J. C., C. D. Stephens, R. A. Page, and K. A. Fogleman (1994). Characteristics of the Aleutian Wadati-Benioff zone seismicity beneath southern Alaska: SUBCON, An interdisciplinary conference on the subduction process, Catalina Island, California, 301-303.
31. Lu, Z., and M. Wyss (1996). Segmentation of the Aleutian plate boundary derived from stress direction estimates based on fault plane solutions. J. Geophys. Res. 101, 803-816.
32. Lu, Z., M. Wyss, and H. Pulpan (1997). Details of stress directions in the Alaska subduction zone from fault plane solutions. J. Geophys. Res. 102, 5385-5402.
33. Lundgren, P., F. Saucier, R. Palmer, and M. Langon (1995). Alaska crustal deformation: finite-element modeling constrained by geologic and very long baseline interferometry data, J. Geophys. Res. 100, 22033-22046.
34. Munson, C. G., C. H. Thurber, Y. Li, and P. G. Okubo (1995). Crustal shear wave anisotropy in southern Hawaii: spatial and temporal analysis, J. Geophys. Res. 100, 20367-20378.
35. Okada, T., T. Matsuzawa, and A. Hasegawa (1995). Shear-wave polarization anisotropy beneath the northeastern part of Honshu, Japan, Geophys. J. Int. 123, 781-797.
36. Özalaybey, S., and M. K. Savage (1995). Shear-wave splitting beneath western United States in relation to plate tectonics, J. Geophys. Res. 100, 18135-18150.
37. Page, R. A., G. Plafker, and H. Pulpan (1995). Block rotation in east-central Alaska: a framework for evaluation earthquake potential, Geology 23, 629-632.
38. Peacock, S. (1993). The importance of blueschist-eclogite dehydration reactions in subducting oceanic crust, Geol. Soc. Am. 105, 684-694.
39. Ratchkovsky, N. A., J. Pujol, and N. Biswas (1997a). Relocation of earthquakes in the Cook Inlet area, southcentral Alaska, using the Joint Hypocenter Determination method, Bull. Seism. Soc. Am. 87, 620-636.
40. Ratchkovsky, N. A.. J. Pujol, and N. Biswas (1997b). Stress pattern in the double seismic zone beneath Cook Inlet, southcentral Alaska, Tectonophysics 281, 164-172.
41. Russo, R. M., and P. G. Silver (1994). Trench-parallel flow beneath the Nasca plate from seismic anisotropy, Science 263, 1105-1111.
42. Sandvol, E., and J. Ni (1997). Deep azimuthal anisotropy in the southern Kurile and Japan subduction zones, J. Geophys. Res. 102, 9911-9922.
43. Shih, X. R., R. P. Meyer, and J. F. Schneider (1991a). Seismic anisotropy above a subducting plate, Geology 19, 807-810.
44. Shih, X. R., J. F. Schneider, and R. P. Meyer (1991b). Polarities of P and S waves, and shear wave splitting observed from the Bucaramange nest, Columbia, J. Geophys. Res. 96, 12069-12082.
45. Silver, P. G., and W. W. Chan (1991). Shear-wave splitting and subcontinental mantle deformation, J. Geophys. Res. 96, 16429-16454.
46. Tytgat, G. (199.5). Shear wave anisotropy in northern Cook Inlet, Master of Science Thesis, University of Alaska, Fairbanks, 122 pp.
47. Wiemer, S., and J. Benoit (1996). Mapping the b-value anomaly at 100-km depth in the Alaska and New Zealand subduction zones, Geophys. Res. Lett. 23, 1557-1560.
48. Wyllie, P. (1988). Magma genesis, plate tectonics, and chemical differentiation of the Earth, J. Geophys. Res. 93, 370-404.
49. Wyss, M., D. Gillard, and B. Liang (1992). An estimate of the absolute stress tensor in Kaoiki, Hawaii, J. Geophys. Res. 97, 4763-4768.
50. Yang, X., K. M. Fischer, and G. A. Abers (1995). Seismic anisotropy beneath the Shumagin islands segment of the Aleutian-Alaska subduction zone, J. Geophys. Res. 100, 18165-18178.
51. Zhao, D. and D. Christensen (1992). Tomographic imaging of the crust and upper mantle beneath central and southern Alaska. Seism. Res. Lett. 63, 64.
52. Zuñiga, F. R., R. R. Castro, and T. Domingues (1995). Stress orientation and anisotropy based on shear-wave splitting observations in the Cerro Prieto fault area, Baja California, Mexico. Pageoph 144, 39-58.