Vertical Crustal Movements in the Tokai District, Central Japan
1984 Volume 23 Issue 2 Pages 111-116
Details
1984 Volume 23 Issue 2 Pages 111-116
Recent vertical crustal movements in the Tokai area are briefly reviewed from leveling data. The main features in the area are as follows;
(1) large and steady uplift in the Akaishi mountain range,
(2) steady and rapid subsidence on the western coast of Suruga Bay, and
(3) anomalous uplift in the Izu Peninsula.
The plate tectonic hypothesis may give a general framework to interpret these movements. However, the uplift of the Akaishi mountains is still open to further researches.
A map of vertical crustal movements of the area is compiled, which excludes the effect of the Tonankai earthquake of 1944. The obtained result shows that the uplift of central Honshu extends further south into the offshore area in the Sea of Enshu. This result is consistent with the uplift rate estimated from sea level data. Thus, obtained data on the recent crustal movements can be compared with some other geological/geophysical data such as Quaternary crustal movements, topography, gravity, and so on. These various data should be interpreted synthetically to understand the neotectonics of the area in detail, which would be also important for the prediction of a forthcoming large earthquake of the area.
