Configuration of subducted Philippine Sea plate beneath the Chubu district, central Japan
Configuration of subducted Philippine Sea plate beneath the Chubu district, central Japan
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日本中部中部地区俯冲菲律宾海板块的构造
DOI：
10.4294/zisin1948.38.2_193
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
Tooru Ooida
中科院分区：
文献类型：
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作者：
F. Yamazaki;Tooru Ooida
日本中部地区名古屋大学地震仪遥测台网位于菲律宾海板块俯冲带的东北部。这对进一步研究下降板块具有重要意义。1978年4月至1984年3月的数据被用来通过上边界的深度等值线来描绘地震带，如图10所示。菲律宾海板块在中部地区之下的下降板块，根据倾角和倾向的不同，分为三个板块，分别命名为“托南凯板块”、“东海板块”和“骏河板块”。这些板块的几何形状似乎与宇津（1977）提出的南海海槽沿着历史大地震的区域性有关。
The Nagoya University seismograph telemetry network for microearthquake observation in the Chubu district, central Japan locates in the northeastern region of the subducting Philippine Sea plate. It is therefore valuable for a refined study on the descending plate. The data from April, 1978 through March, 1984 was used to delineate the seismic zone by depth-contours of the upper boundary, as shown in Fig. 10. The descending Philippine Sea plate beneath the Chubu district is devided into three slabs by the difference in dip angles and dip directions; These are named "Tonankai Slab", "Tokai Slab" and "Suruga Slab", respectively. The geometry of these slabs seems to be related with the seismic regionality suggested by UTsu (1977) for the historical great earthquakes along the Nankai trough.