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Properties of seismic wave scattering around water injection well at Fenton Hill hot dry rock geothermal site
Author(s) -
Nishizawa O.,
Pearson C.,
Albright J.
Publication year - 1983
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl010i001p00101
Subject(s) - scattering , geology , anisotropy , geothermal gradient , ellipsoid , seismic wave , mineralogy , geophysics , geotechnical engineering , geodesy , optics , physics
To determine the scattering properties of microcracks created by water injection in hot dry rock a method for analyzing trajectory ellipsoids of seismic particle motions has been applied. Lengths and directions of three principal axes of trajectory ellipsoids were calculated, and a distribution of the shape of these ellipsoids suggests existence of a strong scattering region around the injection point. This strong scattering has an anisotropic property presumably due to microcrack orientation in the original rock.