TY - JOUR
AU - Horiuchi, Shigeki
AB - Evidence for possible deep-seated magmatic activity beneath northeastern Japan can be obtained from seismic observations. Tomographic inversions of P-wave velocity data show low-velocity zones distributed in the crust and upper mantle beneath active volcanoes. In or around these zones, anomalously low-frequency micro-earthquakes, perhaps caused by magmatic activity, are found at depths of 25–40 km; distinct S-wave reflectors, corresponding to the upper surfaces of magma bodies, are found at depths of 10–18 km. Large crustal earthquakes also occur around the low-velocity zones. These observations reveal the distribution of magma reservoirs at depths and elucidate its relation with shallow seismicity beneath volcanic arcs.
TI - Deep structure of the northeastern Japan arc and its relationship to seismic and volcanic activity
JF - Nature
DO - 10.1038/352683a0
DA - 1991-08-22
UR - https://www.deepdyve.com/lp/springer-journals/deep-structure-of-the-northeastern-japan-arc-and-its-relationship-to-5Pph1dYhbO
SP - 683
EP - 689
VL - 352
IS - 6337
DP - DeepDyve
ER -