GIS Database Applications to Evaluation of Marine Geohazards: New Los Angeles County Ocean Outfall Project

Varnell, Stephen; Hogan, Phillip; Broughton, Aaron; Dean, Cornelia

doi:10.2523/20858-ms

Cited by 1 publication

(1 citation statement)

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“…The Geographic Information System (GIS) globally recognized as the most efficient tool for data compilation, organization, management and integration (Noll IV et al, 2010;Varnell et al, 2010;Turner and Bell, 2010) was selected as the appropriate tool for this study. Figure 1 portrays a typical programme of an offshore development and the relationship between data gathering and GIS construction.…”

Section: Introductionmentioning

confidence: 99%

GIS Development for Geophysical and Geotechnical Data Integration: Application to West Africa Geohazard Assessment

Dan-Unterseh¹,

Courtaud

McNeill³

et al. 2011

All Days

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During the last decade, a large amount of data has been collected for a field development project, located in a challenging geological area, deepwater offshore West Africa. It was necessary to create a database including these different data types, which represents the purpose of the work presented here. In order to integrate, visualize and query this database for the project needs (geohazard assessment, layout optimisation, etc), ESRI ArcGIS was selected as the appropriate analysis tool. The aim of this paper is twofold: to explain how the data was organized into an efficient GIS project and to highlight its principal applications. Firstly, the GIS project is organized into several thematic geodatabases. Each geodatabase corresponds to a field survey and its internal organization resulted from a complex approach. A geodatabase includes several feature datasets, which, in turn are composed of multiple feature classes. An attribute table with enhanced information was created for every data type. This offers a solution for data query using spatial analysis and map algebra. Secondly, the data visualization and integration allows the identification of possible geohazards and, further, their possible impact on the field development. The advantage of this GIS project is that it can be used in all the steps of the field development. This can help decision making related to the optimization of the field layout and the definition of targets for future site investigations. Moreover, the interface being user-friendly; it can be manipulated even by non-specialist project users. In conclusion, this GIS project is being considered as a reference for future projects dealing with wide diversity and large amount of data.

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Section: Introductionmentioning

confidence: 99%