掲載雑誌（和）：
日本地震工学シンポジウム論文集
Vol：
9-3巻
年：
1994年
頁：
E.91-E.96頁
著者（和）：
-
タイトル（和）：
-
|
抄録（和）：
-
|
|
キーワード（和）：
-
|
掲載雑誌（英）：
PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
著者（英）：
Masahiro IIDA, Paul SPUDICH
タイトル（英）：
ESTIMATION OF HETEROGENEITY IN SHALLOW STRUCTURE AND SEISMIC RISK BY WAVEFORM SCATTERER INVERSION OF MICROEARTHQUAKES
|
抄録（英）：
We use single-station waveform recordings of widely distributed microearthquake sources to identify heterogeneities in the earth's crust. On the basis of reasonable theory, our deterministic inverse approach has quite different advantages from downhole and microtremor measurements. The key concept is that the complicated wave field produced by heterogeneous structure and irregular surface topography can be expressed by complicated artificial sources acting in a simple structure. This approach is applied to aftershock recordings from the 1986 North Palm Springs, California earthquake. Horizontal components of velocity records are used, which are filtered 2 to 4 Hz. We assume a grid of scatterers with an interval of 2 km on the ground surface. The scatterer power distribution is not symmetric about the station, and we find a large power peak to the west of the station.
|
|
キーワード（英）：
-
|
記事区分：
-
区分
委員会論文集