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Applicability of the spatial autocorrection method for estimation of basement structure in Kanto plain. Array measurements of microtremors close to the Iwatsuki and Shimosa deep borehole observatory; Kanto heiya no kiban kozo suitei no tame no kukan jiko sokanho no tekiyosei. Iwatsuki Shimosa jiban katsudo kansokusei ni okeru array bido kansoku

Abstract

To investigate applicability of the spatial autocorrection method which is a microtremors exploration method for the estimation of basement structure, array measurements of microtremors were performed using the Iwatsuki and Shimosa deep borehole observatory where detailed structures were clarified as well as the Fuchu and Koto deep borehole observatory. In this study, estimated velocity structures of S-wave were compared with the geological sequence and results of acoustic velocity logging. The phase velocity was estimated by the spatial autocorrection method using FFT. The phase velocity with a smooth normal dispersion was observed in the periodic range from 0.5 to 5 sec in Iwatsuki, and from 0.5 to 4 sec in Shimosa by the combination of four-point circular arrays with radii of 100, 300, and 600 m. The underground structures estimated from the phase velocities coincided well with the geological sequence, and results of acoustic velocity logging and velocity logging for each borehole. For the Iwatsuki borehole, the basement velocity was also estimated properly in the periodic range of observation. While, for the Shimosa borehole, measurements with the period around 6 sec were required to estimate the basement velocity more accurately. 13 refs., 11 figs., 1 tab.
Authors:
Matsuoka, T; Umezawa, N; Shiraishi, H [1] 
  1. Saitama Institute of Environmental Pollution, Saitama (Japan)
Publication Date:
Oct 01, 1996
Product Type:
Conference
Report Number:
CONF-9610294-
Reference Number:
SCA: 150301; PA: NEDO-96:914743; EDB-97:072138; SN: 97001782480
Resource Relation:
Conference: 95. SEGJ conference, Butsuri tansa gakkai dai 95 kai (1996 nendo shuki) gakujutsu koenkai, Kyoto (Japan), 21-23 Oct 1996; Other Information: PBD: Oct 1996; Related Information: Is Part Of Proceedings of the 95th SEGJ Conference; PB: 344 p.; Butsuri tansa gakkai dai 95 kai (1996 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
15 GEOTHERMAL ENERGY; BASEMENT ROCK; SUBSURFACE STRUCTURES; GEOLOGIC STRUCTURES; CORRELATION FUNCTIONS; BOREHOLES; DEPTH 1-3 KM; MICROEARTHQUAKES; SEISMIC DETECTORS; STRATIGRAPHY; SONIC LOGGING; PHASE VELOCITY; SEISMIC SURVEYS
OSTI ID:
472637
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97743637; TRN: 96:914743
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97743637
Submitting Site:
NEDO
Size:
pp. 71-75
Announcement Date:

Citation Formats

Matsuoka, T, Umezawa, N, and Shiraishi, H. Applicability of the spatial autocorrection method for estimation of basement structure in Kanto plain. Array measurements of microtremors close to the Iwatsuki and Shimosa deep borehole observatory; Kanto heiya no kiban kozo suitei no tame no kukan jiko sokanho no tekiyosei. Iwatsuki Shimosa jiban katsudo kansokusei ni okeru array bido kansoku. Japan: N. p., 1996. Web.
Matsuoka, T, Umezawa, N, & Shiraishi, H. Applicability of the spatial autocorrection method for estimation of basement structure in Kanto plain. Array measurements of microtremors close to the Iwatsuki and Shimosa deep borehole observatory; Kanto heiya no kiban kozo suitei no tame no kukan jiko sokanho no tekiyosei. Iwatsuki Shimosa jiban katsudo kansokusei ni okeru array bido kansoku. Japan.
Matsuoka, T, Umezawa, N, and Shiraishi, H. 1996. "Applicability of the spatial autocorrection method for estimation of basement structure in Kanto plain. Array measurements of microtremors close to the Iwatsuki and Shimosa deep borehole observatory; Kanto heiya no kiban kozo suitei no tame no kukan jiko sokanho no tekiyosei. Iwatsuki Shimosa jiban katsudo kansokusei ni okeru array bido kansoku." Japan.
@misc{etde_472637,
title = {Applicability of the spatial autocorrection method for estimation of basement structure in Kanto plain. Array measurements of microtremors close to the Iwatsuki and Shimosa deep borehole observatory; Kanto heiya no kiban kozo suitei no tame no kukan jiko sokanho no tekiyosei. Iwatsuki Shimosa jiban katsudo kansokusei ni okeru array bido kansoku}
author = {Matsuoka, T, Umezawa, N, and Shiraishi, H}
abstractNote = {To investigate applicability of the spatial autocorrection method which is a microtremors exploration method for the estimation of basement structure, array measurements of microtremors were performed using the Iwatsuki and Shimosa deep borehole observatory where detailed structures were clarified as well as the Fuchu and Koto deep borehole observatory. In this study, estimated velocity structures of S-wave were compared with the geological sequence and results of acoustic velocity logging. The phase velocity was estimated by the spatial autocorrection method using FFT. The phase velocity with a smooth normal dispersion was observed in the periodic range from 0.5 to 5 sec in Iwatsuki, and from 0.5 to 4 sec in Shimosa by the combination of four-point circular arrays with radii of 100, 300, and 600 m. The underground structures estimated from the phase velocities coincided well with the geological sequence, and results of acoustic velocity logging and velocity logging for each borehole. For the Iwatsuki borehole, the basement velocity was also estimated properly in the periodic range of observation. While, for the Shimosa borehole, measurements with the period around 6 sec were required to estimate the basement velocity more accurately. 13 refs., 11 figs., 1 tab.}
place = {Japan}
year = {1996}
month = {Oct}
}