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Table 3 Measured coordinates and length of the Shionohara baseline

From: Triangulation scale error caused by the 1894 Shonai earthquake: a possible cause of erroneous interpretation of seismic potential along the Japan Trench

  

East

West

Length (m)

1894

GRS80*

38º50′1.19570″N

38º49′50.42285″N

5129.6096

140º 21′35.39900″E

140º18′3.17182″E

Bessel**

38º49′50.7913″N

38º49′40.0249″N

5129.5872

140º21′47.6756″E

140º18′15.4319″E

2012

GRS80***

38º50′1.16550″N

38º49′50.39528″N

5129.6767

140º21′35.48986″E

140º18′3.25970″E

Bessel*

38º49′50.76110″N

38º49′39.99733″N

5129.6526

140º21′47.76646″E

140º18′15.51979″E

  1. *Calculated with TKY2JGD software
  2. **Coordinates are calculated through network adjustment with PLATEAU software. Length was measured by baseline survey
  3. ***Measured with GPS