Science. 1993 Sep 10;261(5127):1424-7. doi: 10.1126/science.261.5127.1424.
Dynamical processes in the Earth's mantle, such as cold downwelling at subduction zones, cause deformations of the solid-state phase change that produces a seismic discontinuity near a depth of 660 kilometers. Observations of short-period, shear-to-compressional wave conversions produced at the discontinuity yield a detailed map of deformation beneath the Izu-Bonin subduction zone. The discontinuity is depressed by about 60 kilometers beneath the coldest part of the subducted slab, with a deformation profile consistent with the expected thermal signature of the slab, the experimentally determined Clapeyron slope of the phase transition, and the regional tectonic history.
地幔中的动力过程，如俯冲带的冷下沉，导致固态相变的变形，在约 660 公里的深度产生地震不连续。在不连续处产生的短周期剪切至压缩波转换的观测结果给出了伊豆-小笠原俯冲带下方变形的详细图。不连续处比俯冲板块最冷部分低约 60 公里，变形剖面与板块的预期热特征、实验确定的相变克拉珀龙斜率以及区域构造历史一致。
