Non-double-couple mechanisms of microearthquakes induced during the 2000 injection experiment at the KTB site, Germany: A result of tensile faulting or anisotropy of a rock?

Tectonophysics

Volumn 456, Issue 1-2, 2008, Pages 74-93

  Vavryčuk, Václav ^a   Bohnhoff, Marco ^b   Jechumtálová, Zuzana ^a   Kolář, Petr ^a   Šílený, Jan ^a  

^a GEOPHYSICAL INSTITUTE   (Czech Republic)

^b GFZ GERMAN RESEARCH CENTRE FOR GEOSCIENCES   (Germany)

Author keywords

Anisotropy; Fluid injection; Focal mechanism; Tensile faulting

Indexed keywords

ANISOTROPY; DEEP DRILLING; FAULT PLANE; FOCAL MECHANISM; GREEN FUNCTION; KTB BOREHOLE; MICROEARTHQUAKE; MOMENT TENSOR; STRIKE-SLIP FAULT; TENSILE STRESS;

EID: 47249106454     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tecto.2007.08.019     Document Type: Article

References (45)

1. Babuška V., and Cara M. Seismic Anisotropy in the Earth (1991), Kluwer Academic Publishers, London
2. Baisch S., Bohnhoff M., Ceranna L., Tu Y., and Harjes H.-P. Probing the crust to 9 km depth: Fluid injection experiments and induced seismicity at the KTB superdeep drilling hole, Germany. Bull. Seismol. Soc. Am. 92 (2002) 2369-2380
3. Baisch S., and Harjes H.-P. A model for fluid-injection-induced seismicity at the KTB, Germany. Geophys. J. Int. 152 (2003) 160-170
4. Berckhemer H., Rauen A., Winter H., Kern H., Kontny A., Lienert M., Nover G., Pohl J., Popp T., Schult A., Zinke J., and Soffel H.C. Petrophysical properties of the 9-km-deep crustal section at KTB. J. Geophys. Res. 102 (1997) 18,337-18,361
5. Bohnhoff M., Baisch S., and Harjes H.-P. Fault mechanisms of induced seismicity at the superdeep German Continental Deep Drilling Program (KTB) borehole and their relation to fault structure and stress field. J. Geophys. Res. 109 (2004) B02309 10.1029/2003JB002528
6. Brudy M., Zoback M.D., Fuchs K., Rummel F., and Baumgärtner J. Estimation of the complete stress tensor to 8 km depth in the KTB scientific drill holes: implications for crustal strength. J. Geophys. Res. 102 B8 (1997) 18,453-18,475
7. Emmerman R., and Lauterjung J. The German Continental Deep Drilling Program KTB: overview and major results. J. Geophys. Res. 102 (1997) 18,179-18,201
8. Foulger G.R., Julian B.R., Hill D.P., Pitt A.M., Malin P.E., and Shalev E. Non-double-couple microearthquakes at Long Valley Caldera, California, provide evidence for hydraulic fracturing. J. Volcan. Geotherm. Res. 132 (2004) 45-71 10.1016/s0377-0273(03)00420-7
9. Frohlich C. Earthquakes with non-double-couple mechanisms. Science 264 (1994) 804-809
10. Gephart J.W. Stress and the direction of the slip on fault planes. Tectonics 9 (1990) 845-858
11. Gephart J.W., and Forsyth D.W. An improved method for determining the regional stress tensor using earthquake focal mechanism data: application to the San Fernando earthquake sequence. J. Geophys. Res. 89 B11 (1984) 9305-9320
12. Hirschmann G. KTB - the structure of a Variscan terrane boundary: seismic investigation-drilling-models. Tectonophysics 264 (1996) 327-339
13. Jahns E., Rabbel W., and Siegesmund S. Quantified seismic anisotropy at different scales: a case study from the KTB crustal segment. J. Geol. Wiss. 24 (1996) 729-740
14. Jahns E., Siegesmund S., and Chlupáč T. In situ seismic velocities versus laboratory measurements: an example from the KTB. Sci. Drill. 4 (1994) 215-226
15. Jechumtálová Z., and Šílený J. Amplitude ratios for complete moment tensor retrieval. Geophys. Res. Lett. 32 (2005) art. No. L22303
16. Julian B.R., Miller A.D., and Foulger G.R. Non-double-couple earthquake mechanisms at the Hengill-Grensdalur volcanic complex, southwest Iceland. Geophys. Res. Lett. 24 (1997) 743-746
17. Julian B.R., Miller A.D., and Foulger G.R. Non-double-couple earthquakes 1: theory. Rev. Geophys. 36 (1998) 525-549
18. Julian B.R., and Foulger G.R. Earthquake mechanisms from linear-programming inversion of seismic-wave amplitude ratios. Bull. Seismol. Soc. Am. 86 (1996) 972-980
19. Kawasaki I., and Tanimoto T. Radiation patterns of body waves due to the seismic dislocation occurring in an anisotropic source medium. Bull. Seismol. Soc. Am. 71 (1981) 37-50
20. Klíma K. The computation of the elastic constants of an anisotropic medium from body waves. Stud. Geophys. Geod. 17 (1973) 115-122
21. Lund B., and Slunga R. Stress tensor inversion using detailed microearthquake information and stability constraints: application to Ölfus in southwest Iceland. J. Geophys. Res. 104 B7 (1999) 14,947-14,964
22. Michael A.J. Use of focal mechanisms to determine stress: a control study. J. Geophys. Res. 92 B1 (1987) 357-368
23. Miller A.D., Foulger G.R., and Julian B.R. Non-double-couple earthquakes 2: observations. Rev. Geophys. 36 (1998) 551-568
24. Müller B., Zoback M.L., Fuchs K., Mastin L., Gregersen S., Pavoni N., Stephansson O., and Ljunggren C. Regional patterns of tectonic stress in Europe. J. Geophys. Res. 97 (1992) 11,783-11,803
25. Okaya D., Rabbel W., Beilecke T., and Hasenclever J. P wave material anisotropy of tectono-metaorphic terrane: an active source seismic experiment at the KTB super-deep drill hole, southeast Germany. Geophys. Res. Lett. 31 (2004) L24620 10.1029/2004GL020855
26. Plenefisch T., and Bonjer K.P. The stress field in the Rhine Graben area inferred from earthquake focal mechanisms and estimation of frictional parameters. Tectonophysics 275 (1997) 7-97
27. Rabbel W. Seismic anisotropy at the Continental Deep Drilling site (Germany). Tectonophysics 232 (1994) 329-341
28. Rabbel W., Beilecke T., Bohlen T., Fischer D., Frank A., Hasenclever J., Borm G., Kück J., Bram K., Druivenga G., Lüschen E., Gebrande H., Pujol J., and Smithson S. Superdeep vertical seismic profiling at the KTB deep drill hole (Germany): seismic close-up view of a major thrust zone down to 8.5 km depth. J. Geophys. Res. 109 (2004) B09309
29. Riedesel M.A., and Jordan T.H. Display and assessment of seismic moment tensors. Bull. Seismol. Soc. Am. 79 (1989) 85-100
30. Ross A.G., Foulger G.R., and Julian B.R. Non-double-couple earthquake mechanisms at the Geysers geothermal area, California. Geophys. Res. Lett. 23 (1996) 877-880
31. Rössler D., Krüger F., and Rümpker G. Retrieval of moment tensors due to dislocation point sources in anisotropic media using standard techniques. Geophys. J. Int. 169 (2007) 136-148
32. Rössler D., Krüger F., Pšenčík I., and Rümpker G. Retrieval of source parameters of an event of the 2000 West Bohemia earthquake swarm assuming an anisotropic crust. Stud. Geophys. Geod. 51 (2007) 231-254
33. Rössler D., Rümpker G., and Krüger F. Ambiguous moment tensors and radiation patterns in anisotropic media with applications to the modeling of earthquake mechanisms in W-Bohemia. Stud. Geophys. Geod. 48 (2004) 233-250
34. Shimizu H., Matsuwo N., and Ohmi S. A non-double-couple seismic source: tensile-shear crack formation in the Unzen Volcanic Region. Seismol. Res. Lett. 59 5 (1988) 1988
35. Sipkin S.A. Interpretation of non-double-couple earthquake mechanisms derived from moment tensor inversion. J. Geophys. Res. 91 B1 (1986) 531-547
36. Šílený J., and Vavryčuk V. Approximate retrieval of the point source in anisotropic media: numerical modelling by indirect parametrization of the source. Geophys. J. Int. 143 (2000) 700-708 10.1046/j.1365-246X.2000.00256.x
37. Šílený J., and Vavryčuk V. Can unbiased source be retrieved from anisotropic waveforms by using an isotropic model of the medium?. Tectonophysics 356 (2002) 125-138 10.1016/S0040-1951(02)00380-3
38. Snoke J.A. In: Lee W.H.K., et al. (Ed). FOCMEC: Focal mechanism determinations, in International Handbook of Earthquake and Engineering Seismology (2003), Academic, San Diego, California Chap. 85.12
39. Vavryčuk V. Inversion for parameters of tensile earthquakes. J. Geophys. Res. 106 B8 (2001) 16.339-16.355 10.1029/2001JB000372
40. Vavryčuk V. Non-double-couple earthquakes of January 1997 in West Bohemia, Czech Republic: evidence of tensile faulting. Geophys. J. Int. 149 (2002) 364-373 10.1046/j.1365-246X.2002.01654.x
41. Vavryčuk V. Inversion for anisotropy from non-double-couple components of moment tensors. J. Geophys. Res. 109 (2004) B07306 10.1029/2003JB002926
42. Vavryčuk V. Focal mechanisms in anisotropic media. Geophys. J. Int. 161 (2005) 334-346 10.1111/j.1365-246X.2005.02585.x
43. Vavryčuk V. Spatially dependent seismic anisotropy in the Tonga subduction zone: a possible contributor to the complexity of deep earthquakes. Phys. Earth Planet. Inter. 155 (2006) 63-72 10.1016/j.pepi.2005.10.005
44. Vavryčuk V. Focal mechanisms produced by shear faulting in weakly transversely isotropic crustal rocks. Geophysics 71 (2006) D145-D152 10.1190/1.2236378
45. Wagner G.A., Coyle D.A., Duyster J., Henjes-Kunst F., Peterek A., Schröder B., Stöckhert B., Wemmer K., Zulauf G., Ahrendt H., Bischoff R., Hejl E., Jacobs J., Menzel D., Lal N., VandenHaute P., Vercoutere C., and Welzel B. Post-Variscan and thermal and tectonic evolution of the KTB site and its surroundings. J. Geophys. Res. 102 (1997) 18,221-18,232