Interpretation of Seismic Explosion Records in the Kobe-Hanshin Area, Japan, by 3D Finite-Difference Method.
|
Accession number;99A0456260
|
| Title;Interpretation of Seismic Explosion Records in the Kobe-Hanshin Area, Japan, by 3D Finite-Difference Method. |
| Author;
YAMADA NOBUYUKI
(Tokyo Inst. of Technology, Graduate School)
YAMANAKA HIROAKI
(Tokyo Inst. of Technology, Graduate School)
KURITA KATSUMI
(Tokyo Inst. of Technology, Graduate School)
SEO KAZUO
(Tokyo Inst. of Technology, Graduate School)
|
Journal Title;Journal of the Seismological Society of Japan. Second Series
|
Journal Code:G0931A
|
ISSN:0037-1114
|
|
VOL.51;NO.4;PAGE.409-418(1999)
|
| Figure&Table&Reference;FIG.14, TBL.1, REF.17 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The 1995 Hyogoken-Nanbu earthquake caused heavy damage in the Kobe-Hanshin area and Awaji Island, Japan. Explosion sesmic observations were conducted in December, 1995 to understand the cause of the damage distribution in the Kobe-Hanshin area. We investigate characteristics of later phases in observed explosion records. The observed horizontal particle motions suggest that the major later phase arrived after arrival of direct P-wave is caused by laterally reflection of direct P-wave at the basin-edge near the foot of the Rokko mountains. The three-dimensional simulation of the explosion seismic waves is conducted by a finite difference method using a realistic basin model. The laterally reflected waves can be identified in the synthetic seismograms. In particular, the amplitudes of the reflected waves are significant at the sites in Port Island in the Kobe city, because of steep basin-edge in the Higashinada-ward. (author abst.) |
|
|
|
Related Articles;
|
|
