|Reporter:||鈴木 亘 [Wataru SUZUKI]|
Chen Ji, David J. Wald, and Donald V. Helmberger (2002)|
Source Description of the 1999 Hector Mine, California, Earthquake,
Part I: Wavelet Domain Inversion Theory and Resolution Analysis
Part II: Complexity of Slip History
Bull. Seism. Soc. Am., 92(4), 1192-1226.
|Summary:||For significant earthquake, relatively lower frequency signals are usually dominant in displacement records. They provide the general picture of the source model. Contrary, higher frequency components have less amplitude but give us the source characteristics in detail. Authors introduce wavelet transform into joint source inversion to evaluate seismic data in each frequency range. They use L1 + L2 norm and a correlative function for lower and higher frequency component, respectively. Wavelet transform localize signals in time-frequency domain, so information of signal arrival is not lost. Authors apply this methodology to data set of the 1999 Hector Mine Earthquake and derive slip amplitude, rake angle, rise time and rupture velocity (breaking time) on each subfault.|
|Reporter:||川方 裕則 [Hironori KAWAKATA]|
McGuire, J. J. (2004)|
Estimating Finite Source Properties of Small Earthquake Ruptures
Bull. Seism. Soc. Am., 94(2), 377-393.
|Summary:||準備中 [In Preparation]|