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| | Abstract | | We analyzed gravity anomaly data in Chuetsu-Area, Niigata Pref., Japan, using the results of Wide-angle reflection and refraction surveys. The seismic section and velocity tomogram reduced ambiguity of gravity 2D forward modeling and following 3D inversion analysis, which provids a model of Pre-Neogene basement structure. The inversion result shows some segment boundaries in addition to dominant density structure. |
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