You need JavaScript to view this

Earthquake ground motion research in Sapporo city; Sapporoshi ni okeru jishindo no kenkyu

Abstract

The Research Group on Earthquake Ground Motion in Sapporo City established in May 1996 has inaugurated collection of information on ground structures and observations of strong earthquakes in Sapporo City. The Research Group on Earthquake Ground Motion in Sapporo City has carried out geological investigations, electric logging and PS logging to date in three boring holes each with a depth of about 100 m, 200 m and 600 m. According to the result of the logging in the new Ishikari Bay port (600-m deep hole), the S-wave velocity has increased slowly as it starts from the ground surface to greater depths, but showed no noticeable velocity boundaries in this range of the depth. The Sapporo municipal office has drilled three observation wells (500-m deep) for the purpose of determining focal points of microtremors directly under the city area. Hole-bottom observation has been inaugurated since the beginning of this year. According to comparison of the results of loggings at great depths, a depth at which the S-wave velocity reaches about 700 m/s becomes greater toward the sea area. The result of calculations on amplification characteristics of the SH wave on rock beds revealed that a seismic wave of about 0.5 Hz  More>>
Authors:
Sasatani, T [1] 
  1. Hokkaido University, Sapporo (Japan)
Publication Date:
Oct 22, 1997
Product Type:
Conference
Report Number:
ETDE/JP-98751022; CONF-9710214-
Reference Number:
SCA: 440700; 580000; PA: JP-97:0G4520; EDB-98:075725; SN: 98001944456
Resource Relation:
Conference: 97. SEGJ conference, Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai, Sapporo (Japan), 22-24 Oct 1997; Other Information: PBD: 22 Oct 1997; Related Information: Is Part Of Proceeding of the 97th (Fall, Fiscal 1997) SEGJ Conference; PB: 371 p.; Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 58 GEOSCIENCES; SEISMOLOGY; ROCK BEDS; DATA ACQUISITION; ELECTRIC LOGGING; WELL LOGGING; DEPTH; BOREHOLES; SEISMIC S WAVES; AMPLIFICATION; SEISMIC SOURCES
OSTI ID:
622640
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98751022; TRN: JN97G4520
Availability:
Available from Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, (Japan); OSTI as DE98751022
Submitting Site:
NEDO
Size:
pp. 35-39
Announcement Date:
Jul 24, 1998

Citation Formats

Sasatani, T. Earthquake ground motion research in Sapporo city; Sapporoshi ni okeru jishindo no kenkyu. Japan: N. p., 1997. Web.
Sasatani, T. Earthquake ground motion research in Sapporo city; Sapporoshi ni okeru jishindo no kenkyu. Japan.
Sasatani, T. 1997. "Earthquake ground motion research in Sapporo city; Sapporoshi ni okeru jishindo no kenkyu." Japan.
@misc{etde_622640,
title = {Earthquake ground motion research in Sapporo city; Sapporoshi ni okeru jishindo no kenkyu}
author = {Sasatani, T}
abstractNote = {The Research Group on Earthquake Ground Motion in Sapporo City established in May 1996 has inaugurated collection of information on ground structures and observations of strong earthquakes in Sapporo City. The Research Group on Earthquake Ground Motion in Sapporo City has carried out geological investigations, electric logging and PS logging to date in three boring holes each with a depth of about 100 m, 200 m and 600 m. According to the result of the logging in the new Ishikari Bay port (600-m deep hole), the S-wave velocity has increased slowly as it starts from the ground surface to greater depths, but showed no noticeable velocity boundaries in this range of the depth. The Sapporo municipal office has drilled three observation wells (500-m deep) for the purpose of determining focal points of microtremors directly under the city area. Hole-bottom observation has been inaugurated since the beginning of this year. According to comparison of the results of loggings at great depths, a depth at which the S-wave velocity reaches about 700 m/s becomes greater toward the sea area. The result of calculations on amplification characteristics of the SH wave on rock beds revealed that a seismic wave of about 0.5 Hz is amplified by a little more than two times. 1 ref., 5 figs., 1 tab.}
place = {Japan}
year = {1997}
month = {Oct}
}