GIS Data Modeling of a Regional Geological Structure by Integrating Geometric and Semantic Expressions

doi:10.11947/j.AGCS.2017.20160427

Abstract

Abstract: Using GIS, data models of geology via geometric descriptions and expressions are being developed. However, the role played by these data models in terms of the description and expression of geological structure phenomenon is limited. To improve the semantic information in geological GIS data models, this study adopts an object-oriented method that describes and expresses the geometric and semantic features of the geological structure phenomenon using geological objects and designs a data model of regional geological structures by integrating geometry and semantics. Moreover, the study designs a semantic "vocabulary-explanation-graph" method for describing the geological phenomenon of structures. Based on the semantic features of regional geological structures and a linear classification method, it divides the regional geological structure phenomenon into 3 divisions, 10 groups, 33 classes and defines the element set and element class. Moreover, it builds the basic geometric network for geological elements based on the geometric and semantic relations among geological objects. Using the ArcGIS Diagrammer Geodatabase, it considers the regional geological structure of the Ning-Zhen Mountains to verify the data model, and the results indicate a high practicability.

Key words: regional geological structure, data model, semantics, GIS expression, object-oriented

CLC Number:

P208

HE Handong, HU Di, LÜ Guonian, LI Anbo, LI Junli. GIS Data Modeling of a Regional Geological Structure by Integrating Geometric and Semantic Expressions[J]. Acta Geodaetica et Cartographica Sinica, 2017, 46(8): 1058-1068.

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