Three Dimensional Geological Modeling of the Kisarazu Distinct

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  • 論理的手法に基づく木更津地域の３次元地質モデリング
  • ロンリテキ シュホウ ニ モトズク キサラズ チイキ ノ 3ジゲン チシツ モデリング

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Abstract

In this study, we constructed an objective three dimensional geological model (3DGM) of the Kisarazu distinct, Chiba Prefecture, central Japan based on logical procedures. In this modeling, we first constructed a Logical Model of Geological Structure (LMGS) that defines a logical relation between geological boundary surfaces and geological units. Secondly, we generated Digital Elevation Models (DEMs) of geological boundary surfaces using 44 geological columns. Thirdly, we constructed a 3DGM using the LMGS and the DEMs. Finally, we generated a geological map and some geological cross-sections from the logic-based 3DGM. In addition, we numerically and visually compared these results with the geometric-based geological map and geological cross-sections. As a result, the logic-based model was similar to the geometric-based one, but detailed comparison revealed many differences between these two models. Most possible causes of the differences are (1) shapes of topographic surfaces, (2) estimation method and drawing method of geological boundary, and (3) intervention of modeler's knowledge and experience in geometric procedures.

Journal

  • Geoinformatics

    Geoinformatics 26 (1), 3-13, 2015

    Japan Society of Geoinformatics

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