• 作者： 余貴坤
• 作者服務機構： 國立中央大學地球物理研究所
• 中文摘要： 用多重濾波法和等量化展示濾波法分別測定路徑幾乎全部在菲律賓海板體?的12條雷利波及5條洛夫波的群速和相速。分析各路徑的頻散特?後顯示，菲律賓海板體在構造上可能只有微量的區域變化。如果此微量的區域變化存在，則將菲 律賓海板體分?山脊和盆地兩部分較?適當。各部分的區域群速及相速可由純路徑法求得。由這些區域化的速度資料推研 各部分的地鼓及上部地函的構造顯示，整個菲律賓海板體的上部地函?一高剪力波速的薄層（約只十公里）覆蓋在較軟的 低速層上。
• 英文摘要： Both the multiple-filter technique and the display-equalized filter method were used to measure the group and phase velocities along twelve Rayleigh- and five Love-wave paths, which lie almost entirely within the Philippine Sea Plate. By examining the dispersion characteristics of paths across various portions of this plate, only a slightly regional variation in structure might be expected or none at all. If this slightly regional variation exists, the Philippine Sea Plate would rather be divided into two regions, i.e. the ridge and the basin. The pure-path method was applied to compute the regionalized group and phase velocities, and these data were used to derive structural models of the crust and upper mantle for each region. The results show that a very thin lid (about 10 km thick) with high shear velocity overlies the soft low-velocity mantle throughout the whole plate.
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