Splitting of the Philippine Sea Plate and a magma chamber beneath Mt. Fuji
Article first published online: 6 MAY 2004
Copyright 2004 by the American Geophysical Union.
Geophysical Research Letters
Volume 31, Issue 9, 16 May 2004
How to Cite
2004), Splitting of the Philippine Sea Plate and a magma chamber beneath Mt. Fuji, Geophys. Res. Lett., 31, L09603, doi:10.1029/2004GL019477., , and (
- Issue published online: 6 MAY 2004
- Article first published online: 6 MAY 2004
- Manuscript Accepted: 2 APR 2004
- Manuscript Revised: 31 MAR 2004
- Manuscript Received: 13 JAN 2004
 Mt. Fuji is located in a tectonically unique area, but various aspects of the structure have not been fully explained. Here we show the results from a magnetotelluric survey across Mt. Fuji along a 70 km observation line. The profile shows that a conductive body is located between two resistive bodies at depths greater than 15 km. Low frequency earthquakes occur above the conductor. We interpret these results in a model where beneath Mt. Fuji, the subducting Philippine Sea Plate is split into two parts, and a magma chamber is located in the gap. Due to this unique structure, Mt. Fuji may be able to sustain a high basalt magma flux throughout its entire history.