RESEARCH ON ACTIVE FAULT DATABASE CONSTRUCTION RELATED ISSUES
Guihua Yu · Seismology and Geology · 2012
The goal of the exploration to active fault is to understand its activities,relative parameters,the spatial distribution characteristics and its deep structures. There're three major stages for active fault exploration,namely, preparation stage,exploration stage and analysis stage. The construction of the database for each of these stages has different focus. Based on the review of other articles about the development of active Fault database from international sources,the paper introduces the construction of databases based on the Technological System of China Earthquake Active fault Exploration project. And along with the development and implementation of the projects such as ‘Seismic Risk Assessment of Active fault in Key Earthquake Monitoring Areas in China’,‘China Earthquake Active Fault Exploration’, so on,database templates corresponding to each of the stages of active fault exploration are worked out according to the design idea,architecture and implementation of ArcGIS-based active fault database and the work procedure for active fault exploration. The main functions of the bulk storage software and data quality monitoring software developed for the construction of the database are introduced. Due to the numerous data and the extensive sources as well as the complexity of the data acquisition during the building of database,there are chances to have either manual or systemic errors,and moreover,the data quality might be impacted,resulting in a database failing to represent the real activities of the active faults. On the other hand,the data stored in the database lacks consistency and integrity,thus,the database is ineffective and opposite to the original intention of its construction. The paper analyzes the main data sources used to establish the active fault database and the causes for generating low quality data,and discusses the advantages for building the active fault database simultaneously along with the implementation of active fault exploration.