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Revision of the Primary Trigonometrical Survey in Tango Earthquake Districts

By 陸地測量部 and Imperial Japanese Army Land Survey Department


Some results of the trigonometrical revision works carried out in Tango Districts after the recent destructive earthquake have already lieen published in this Bulletin, Vol. IV. Later, in 1928, a more extensive revision was carried out, comprising 18 primary and 7 suppdementary trigonometrical points which were all well preserved since the earlier survey in 1885-89. The comparison of the results of the two surveys gives the deformation of the triangulation net as shown in the Table and Figs

Topics: 453
Publisher: Earthquake Research Institute, Tokyo Imperial University
Year: 1929
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Provided by: UTokyo Repository

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