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A precise geodetic survey in Japan

Authors
Journal
Tectonophysics
0040-1951
Publisher
Elsevier
Publication Date
Volume
97
Identifiers
DOI: 10.1016/0040-1951(83)90132-4

Abstract

Abstract Japan is located in the Circum-Pacific seismic belt and has frequently suffered from severe earthquakes in her history. To reduce earthquake disasters, the realization of earthquake prediction is now a national development project, in which the role of geodetic survey is extremely important. The Geographical Survey Institute has planned to carry out a precise geodetic survey of all Japan to study crustal movements and to utilize these data for long-range prediction of earthquakes. It started the survey in 1974. This survey consists of repetition of a first and second order geodetic survey by trilaterations and first order levelling with gravity measurement. At present, the survey of the first period has been executed. The method and results obtained so far are discussed in this report.

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