Method for estimating origin time, hypocentral distance, and...

Details Method for estimating origin time, hypocentral distance, and... Method for estimating origin time, hypocentral distance, and...

2005-04-26

2005-04-26

McElheny, Jr., Donald (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Earth science

Reexamination Certificate

active

06885945

ABSTRACT:
An apparatus for estimating the origin time, the hypocentral distance, and the scale from time-series measured data of the electric field intensity which is observed accompanying a seismic ground motion, comprising a measuring means21, 22for measuring the electric field intensity, a data storing means24, 25for collecting and storing measured data from the measuring means, and a data analyzing means26for analyzing measured data stored in the storing means to detect origin time from the starting time of electric field increase, and to predict the hypocentral distance and the magnitude from the elapsed time from said origin time and said measured data, is provided.

REFERENCES:
patent: 4837582 (1989-06-01), Takahashi et al.
patent: 4904943 (1990-02-01), Takahashi
patent: 5694129 (1997-12-01), Fujinawa et al.

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