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Linear array data gathering for microearthquake observation: Survey of mid‐crustal reflectors
Author(s) -
Katsumata K.,
Tsukada S.,
Ogino I.,
Mizoue M.
Publication year - 1993
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 - 10.1029/93gl00327
Subject(s) - microearthquake , geology , crust , seismology , remote sensing , geophysics , induced seismicity
Linear Array Data Gathering (LADG) is a method for using microearthquake observations to investigate fine structure in the Earth. There are two types of LADG, multistation and multisource. In the multisource case, seismic wavefrom data from many sources recorded at one station are used. We apply the multisource geometry to survey reflectors in the deep portion of the crust at Nikko‐Ashio region, Central Honshu, Japan. We detect the PP and PS reflections as well as SS and SP from a partial melt zone located at 19.5 km in depth. No previous study has found the PP and PS reflections in this region. As a result of this study, we are confident that LADG for microearthquake observation is eminently useful for the survey of fine crustal structure.