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首页> 外文期刊>Earth, planets and space: EPS >High resolution receiver function imaging of the seismic velocity discontinuities in the crust and the uppermost mantle beneath southwest Japan
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High resolution receiver function imaging of the seismic velocity discontinuities in the crust and the uppermost mantle beneath southwest Japan

机译：日本西南部地壳和上地幔中地震速度不连续性的高分辨率接收器功能成像

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摘要

Clear images of the seismic velocity discontinuities in the crust and the uppermost mantle beneath southwest Japan have been obtained with Receiver Function (RF) analyses of teleseismic waveforms observed at extraordinary dense short-period and broadband stations. For imaging, we construct several 2-D profiles of depth-transformed RFs to delineate the fine crystal structure and the 3-D configuration of the Philippine Sea plate (PHS). the Moho is clearly seen and locally depressed just beneath the Chugoku mountains. The Conrad, The velocity discontinuity within the crust, in the northern Kinki region is recognized and depressed just beneath the Chugoku Mountains as well as the Moho. RF analyses also clearly elucidate the largely consorted configuration of the PHS including aseismic portions. The PHS subducts aseismically under the western Chugoku region with a high dip angle of 35 degrees at least to a depth of 65 km. In the western Kii peninsula. It descends steeply to a depth of 90 km with some curvature, dip of 20 degrees to a depth of 60 km from the eastern Kii peninsula to the Lake Biwa.
机译：通过在异常密集的短周期和宽带站观测到的远震波形的接收器功能（RF）分析，获得了日本西南部地壳和上地幔中地震速度不连续性的清晰图像。对于成像，我们构造了深度变换的RF的几个2-D轮廓，以描绘菲律宾海板块（PHS）的精细晶体结构和3-D构造。在Chugoku山脉的下方，可以清楚地看到Moho并局部感到沮丧。在北近畿地区和莫霍面以下的北部近畿地区，地壳内部速度不连续的康拉德得到了承认和压抑。射频分析还清楚地阐明了包括抗震部分在内的PHS的大部分配置。 PHS在中国南部西部地区以地震的方式俯冲，倾角至少为35度，深度至少为65 km。在基伊半岛西部。从基伊半岛东部到琵琶湖，它陡峭地下降到90 km的深度并有些曲率，下降20度到60 km的深度。

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