Weighted stack of shallow seismic reflection line acquired in downtown Osaka City, Japan

Rashed, Mohamed; Yamamoto, Eisaku; Mitamura, Muneki; Toda, Shigeru; Nishida, Takuma; Terada, Y.; Uda, Hideo; Yokota, Hiroshi; Nemoto, Hiroo; Nakagawa, Kōichi

doi:10.1016/s0926-9851(02)00144-1

Cited by 16 publications

(7 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6). This dip angle and dip direction are consistent with those estimated for the Uemachi Fault plane approximately 15 km to the north of the study area (Rashed et al . 2002).…”

Section: Resultssupporting

confidence: 91%

See 1 more Smart Citation

High‐resolution shallow seismic and ground penetrating radar investigations revealing the evolution of the Uemachi Fault system, Osaka, Japan

Rashed

Nakagawa

2004

Island Arc

Self Cite

View full text Add to dashboard Cite

Ground penetrating radar (GPR) and high-resolution shallow reflection seismic surveying were carried out to investigate the subsurface geology in and around the Uemachi Fault zone in the Yamato River area, Osaka, Japan. Shallow drilling in the area showed a major displacement event during the middle Pleistocene. The main Uemachi Fault plane could be clearly imaged on the seismic section, except for the most shallow 200 m. Several shallow normal fault planes with less displacement could be detected on both sides of the fault plane. GPR profiles confirmed the presence of several shallow normal faults within the area near the fault zone. These shallow faults could be followed in all of the GPR profiles crossing the fault zone. The integration of seismic section, GPR profiles and drilling data led to a conceptual model that explains the evolution of the Uemachi Fault system. The proposed model suggests the occurrence of several cycles of small vertical displacement along the deep part of the fault plane caused by the regional east-west compressional stress. The ductile nature of the shallow sedimentary cover and the absence of confining pressure in the shallow part allow for a considerable amount of plastic bending before failing in the shallow sedimentary layers. This bending generates stretching force within the shallow sedimentary cover, which in time, along with gravitational force, gives rise to the formation of the swarm of normal faults within the shallow layers near the fault zone. Some of the detected faults extend to a depth of less than 3 m below the ground surface, suggesting that the last tectonic activity along the fault plane may have occurred recently.

show abstract

“…6). This dip angle and dip direction are consistent with those estimated for the Uemachi Fault plane approximately 15 km to the north of the study area (Rashed et al . 2002).…”

Section: Resultssupporting

confidence: 91%

“…It was not possible to use explosive source in the study area because of city restrictions. Moreover, accelerated weight–drop that was used previously in a nearby area provided low quality seismic data with a considerably low SN ratio (Rashed et al . 2002).…”

Section: Seismic Datamentioning

confidence: 99%

High‐resolution shallow seismic and ground penetrating radar investigations revealing the evolution of the Uemachi Fault system, Osaka, Japan

Rashed

Nakagawa

2004

Island Arc

Self Cite

View full text Add to dashboard Cite

show abstract

“…In seismic section with horizontal reflections, correlation coefficient between adjacent traces can be used as a measure of the lateral coherency of reflections (Shon and Yamamoto, 1992;Rashed et al, 2002). The correlation coefficients between adjacent traces from the full fold part of both stacks were calculated and plotted against each other (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Maximum per average amplitude ratio of a specific envelope of a seismic trace can provide a rough estimation of the S/N ratio of that trace (Rashed et al, 2002). To calculate the maximum per average amplitude ratio of each trace, a narrow envelope that contains a strong reflection is selected (in this study, the envelope between 160 and 190 ms).…”

Section: Resultsmentioning

confidence: 99%

“…Geophysical investigations are gradually more important as a noninvasive tool for environmental, engineering, geotechnical, and archaeological exploration. An important element of near surface geophysics is the detailed seismic imaging of the shallow subsurface by reflection, refraction, and seismic tomography methods (e.g., Green and Mair, 1983;Gendzwill et al, 1994;Hayles et al, 1996;Rashed et al, 2002). Coming up with a cost effective, environmentally benign seismic source that generates a reasonable amount of high frequency seismic energy with less permission and safety limitations has been a challenge for the past 2 decades (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

GDP: A new source for shallow high-resolution seismic exploration

Rashed

2009

Journal of Applied Geophysics

View full text Add to dashboard Cite

Investigation on geological structure and geothermal resources using seismic exploration

Liu

Long

2022

Geothermics

View full text Add to dashboard Cite

Weighted stack of shallow seismic reflection line acquired in downtown Osaka City, Japan

Cited by 16 publications

References 10 publications

High‐resolution shallow seismic and ground penetrating radar investigations revealing the evolution of the Uemachi Fault system, Osaka, Japan

High‐resolution shallow seismic and ground penetrating radar investigations revealing the evolution of the Uemachi Fault system, Osaka, Japan

GDP: A new source for shallow high-resolution seismic exploration

Investigation on geological structure and geothermal resources using seismic exploration

Contact Info

Product

Resources

About