粟島の余効的変動

概要

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The writers worked out geodetic surveys on Awashima Island for the purpose of detecting postseismic effect in the land deformations thought to be associated with the Niigata Earthquake of 1964. The surveys were made by the following two techniques: differential tide observation, i.e. to compare tide-gage records at the Awashima (Uchiura and Kamaya) stations with those at neighboring stations on the mainland coast, and, resurvey of the previous sea level by use of biological mark remaining on the vertical surface of rock.
1966-07-25