Seismic anisotropy in the fore-arc region of the Hikurangi subduction zone, New Zealand

Physics of the Earth and Planetary Interiors

Volumn 95, Issue 3-4 SPEC. ISS., 1996, Pages 211-225

  Gledhill, Ken ^a,b   Stuart, Graham ^a  

^a UNIVERSITY OF LEEDS   (United Kingdom)

^b GNS SCIENCE   (New Zealand)

Author keywords

[No Author keywords available]

Indexed keywords

CRUST (LOWER); DEFORMATION; FOREARC; MANTLE (UPPER); SEISMIC ANISOTROPY; SHEAR WAVE SPLITTING; SUBDUCTING SLAB; SUBDUCTION ZONE;

NEW ZEALAND, NORTH ISLAND;

EID: 0029749681     PISSN: 00319201     EISSN: None     Source Type: Journal    
DOI: 10.1016/0031-9201(95)03117-0     Document Type: Article

References (43)

1. Adams, R.D. and Ferris, B.G., 1976. A further earthquake at exceptional depth. N.Z. J. Geol. Geophys., 19: 269-273.
2. Adams, R.D. and Ware, D.E., 1977. Subcrustal earthquakes beneath New Zealand: locations determined with a laterally inhomogeneous velocity model. N.Z. J. Geol. Geophys., 20: 59-83.
3. Anderson, H. and Webb, T., 1994. New Zealand seismicity: patterns revealed by the upgraded National Seismograph Network. N.Z. J. Geol. Geophys., 37: 477-493.
4. Ando, M., Ishikawa, Y. and Yamazaki, F., 1983. Shear-wave polarization anisotropy in the upper mantle beneath Honshu, Japan. J. Geophys. Res., 88: 5850-5864.
5. Aster, R.C. and Shearer, P.M., 1992. Initial shear-wave particle motions and stress constraints at the Anza seismic network. Geophys. J. Int., 108: 740-748.
6. Aster, R.C., Shearer, P.M. and Berger, J., 1990. Quantitative measurement of shear wave polarizations at the Anza seismic network, Southern California: implications for shear wave splitting and earthquake prediction. J. Geophys. Res., 95: 12449-12473.
7. Barruol, G. and Mainprice, D., 1993. A quantitative evaluation of the contribution of crustal rocks to the shear-wave splitting of teleseismic SKS waves. Phys. Earth Planet. Inter., 78: 281-300.
8. Bowman, J.R. and Ando, M., 1987. Shear-wave splitting in the upper-mantle wedge above the Tonga subduction zone. Geophys. J. R. Astron. Soc., 88: 25-41.
9. Brocher, T.M. and Christensen, N.I., 1990. Seismic anisotropy due to preferred mineral orientation observed in shallow crustal rocks in Southern Alaska. Geology, 18: 737-740.
10. Chen, T., Booth, D.C. and Crampin, S., 1987. Shear-wave polarizations near the North Anatolian fault - III. Observations of temporal changes. Geophys. J. R. Astron. Soc., 91: 287-311.
11. Crampin, S., 1981. A review of wave motion in anisotropic and cracked elastic media. Wave Motion, 3: 343-391.
12. Crampin, S., 1990. The scattering of shear-waves in the crust. Pure Appl. Geophys., 132: 67-91.
13. Crampin, S., 1993. Arguments for EDA. Can. J. Explor. Geophys., 29: 18-30.
14. Crampin, S. and Lovell, J.H., 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.
15. Darby, D.J. and Meertens, C.M., 1995. Terrestrial and GPS measurements of deformation across the Taupo back-arc and Hikurangi fore-arc regions in New Zealand. J. Geophys. Res., 100(B5): 8221-8232.
16. Evans, R., 1984. Effects of the free surface on shear wavetrains. Geophys. J.R. Astron. Soc., 76: 165-172.
17. Farra, V. and Vinnik, L., 1994. Shear-wave splitting in the mantle of the Pacific. Geophys. J. Int., 119: 195-218.
18. Fisher, K.M. and Yang, X., 1994. Anisotropy in Kuril-Kamchatka subduction zone structure. Geophys. Res. Lett., 21: 5-8.
19. Galea, P., 1993. Upper mantle anisotropy in the S.W. Pacific from earthquake travel-time analysis. Phys. Earth Planet. Inter., 76: 229-239.
20. Gledhill, K.R., 1990. A shear-wave polarization study in the Wellington region, New Zealand, Geophys. Res. Lett., 17: 1319-1322.
21. Gledhill, K.R., 1991. Evidence for shallow and pervasive anisotropy in the Wellington region, New Zealand. J. Geophys. Res., 96: 21503-21516.
22. Gledhill, K.R., 1993a. Shear-waves recorded on close spaced seismographs: I. Shear-wave splitting results. Can. J. Explor. Geophys., 29: 285-298.
23. Gledhill, K.R., 1993b. Shear-waves recorded on close spaced seismographs: II. The complex anisotropic structure of the Wellington Peninsula, New Zealand. Can. J. Explor. Geophys., 29: 299-314.
24. Gledhill, K. and Gubbins, D., 1996. SKS splitting and the seismic anisotropy of the mantle beneath the Hikurangi subduction zone, New Zealand. Phys. Earth Planet. Inter., 95: 227-236.
25. Harris, F., 1982. Focal mechanisms of subcrustal earthquakes in the North Island, New Zealand. N.Z. J. Geol. Geophys., 25: 325-334.
26. Iidaka, T. and Obara, K., 1994. Shear-wave polarization anisotropy in the upper mantle from a deep earthquake. Phys. Earth Planet. Inter., 82: 19-25.
27. Kaneshima, S., 1990. Origins of crustal anisotropy: shear wave splitting in Japan. J. Geophys. Res., 95: 11121-11133.
28. Kaneshima, S. and Silver, P.G., 1996. Anisotropic loci in the mantle beneath Central Peru. Phys. Earth Planet. Inter., in press.
29. Kaneshima, S., Maeda, N. and Ando, M., 1990. Evidence for the splitting of shear waves from waveform and focal mechanism analyses. Phys. Earth Planet. Inter., 61: 238-252.
30. Mainprice, D. and Silver, P.G., 1993. Interpretation of SKS-waves using samples from the subcontinental lithosphere. Phys. Earth Planet. Inter., 78: 257-280.
31. Nicolas, A. and Christensen, N.I., 1987. Formation of anisotropy in upper mantle peridotites - a review. In: K. Fuchs and C. Froidvaux (Editors), Composition, Structure and Dynamics of the Lithosphere-Asthenosphere System. American Geophysical Union, Washington, DC, pp. 111-123.
32. Robinson, R., 1986. Seismicity, structure and tectonics of the Wellington region, New Zealand. Geophys. J. R. Astron. Soc., 87: 379-409.
33. Russo, R.M. and Silver, P.G., 1994. Trench-parallel flow beneath the Nazca plate from seismic anisotropy. Science, 263: 1105-1111.
34. Shih, X.R., Meyer, R.P. and Schneider, J.F., 1989. An automated, analytical method to determine shear-wave splitting. Tectonophysics, 165: 271-278.
35. Shih, X.R., Schneider, J.F. and Meyer, R.P., 1991. Polarities of P and S waves, and shear-wave splitting observed from the Bucaramanga Nest, Colombia. J. Geophys. Res., 96: 12069-12082.
36. Silver, P.G. and Chan, W.W., 1991. Shear-wave splitting and subcontinental mantle deformation. J. Geophys. Res., 96: 16429-16454.
37. Smith, G., 1994. Structure of the Tonga-Kermadec subducted slab from investigation of precursive seismic phases. Ph.D. Thesis, Department of Earth Sciences, University of Leeds.
38. Stevens, G.R., 1974. Rugged Landscape: the Geology of Central New Zealand. Reed, Wellington.
39. Stuart, G.W., Francis, D., Gubbins, D. and Smith, G., 1995. Tararua broadband array, North Island, New Zealand. Bull. Seismol. Soc. Am., 85: 325-333.
40. Tsukada, S., Kaneshima, S., Ogino, I. and Mizoue, M., 1994. Anisotropy study of intermediate earthquakes occurring in a double-planed seismic zone. Abstract of the 27th General Assembly, IASPEI, Wellington, New Zealand, W3.3.
41. Vinnik, L.P., Makeyeva, L.I., Milev, A. and Usenko, Yu.A., 1992. Global patterns of azimuthal anisotropy and deformation in the continental mantle. Geophys. J. Int., 111: 433-447.
42. Walcott, R.I., 1978. Geodetic strains and large earthquakes in the axial tectonic belt of North Island, New Zealand. J. Geophys. Res., 83: 4419-4429.
43. Yu, Y. and Park, J., 1994. Hunting for azimuthal anisotropy beneath the Pacific Ocean region. J. Geophys. Res., 99: 15399-15421.