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NetworkGT: A GIS tool for geometric and topological analysis of two-dimensional fracture networks

NetworkGT: A GIS tool for geometric and topological analysis of two-dimensional fracture networks
NetworkGT: A GIS tool for geometric and topological analysis of two-dimensional fracture networks

Fractures rarely occur individually but more usually as networks of numerous fractures whose arrangement, abundance, and interaction control the mechanical and transport properties of rock masses. Of particular importance are the distributions and spatial variations of different geometric (locations, orientation, length, etc.) and topological (intersections, connectivity, etc.) attributes of fractures in a network. Geographical Information Systems (GIS) provide a means to map and digitize two-dimensional fracture networks from a variety of field and remote sensing data and to display the results in the form of quality maps. We introduce NetworkGT, an open-source toolbox for ArcGIS capable of efficient sampling, analysis, and spatial mapping of geometric and topological attributes of two-dimensional fracture networks. The toolbox helps to extract and plot geometric and topological information from a given two-dimensional fracture network including: rose diagrams, plots of frequency distribution and topology, and maps of topological parameters. Using a fracture network example from offshore NW Devon, United Kingdom, we illustrate the practicality and effectiveness of the toolbox. This includes computing a contour grid with 1326 subsampled regions within the fracture network, which is used to demonstrate the quantitative capabilities of the toolbox and the ability to spatially map important network properties. The toolbox will help to facilitate the increasing application of geometry and topology in the analysis and comparison of fracture networks at a range of scales. Furthermore, the integration of the NetworkGT toolbox into ArcGIS allows two-dimensional fracture networks to be interpreted, mapped, and fully analyzed within the same software package.

1553-040X
1618-1634
Nyberg, Björn
c54551f5-71f2-4d9b-8350-557eea2840b3
Nixon, Casey W.
757fe329-f10f-4744-a28e-0ccc92217554
Sanderson, David J.
5653bc11-b905-4985-8c16-c655b2170ba9
Nyberg, Björn
c54551f5-71f2-4d9b-8350-557eea2840b3
Nixon, Casey W.
757fe329-f10f-4744-a28e-0ccc92217554
Sanderson, David J.
5653bc11-b905-4985-8c16-c655b2170ba9

Nyberg, Björn, Nixon, Casey W. and Sanderson, David J. (2018) NetworkGT: A GIS tool for geometric and topological analysis of two-dimensional fracture networks. Geosphere, 14 (4), 1618-1634. (doi:10.1130/GES01595.1).

Record type: Article

Abstract

Fractures rarely occur individually but more usually as networks of numerous fractures whose arrangement, abundance, and interaction control the mechanical and transport properties of rock masses. Of particular importance are the distributions and spatial variations of different geometric (locations, orientation, length, etc.) and topological (intersections, connectivity, etc.) attributes of fractures in a network. Geographical Information Systems (GIS) provide a means to map and digitize two-dimensional fracture networks from a variety of field and remote sensing data and to display the results in the form of quality maps. We introduce NetworkGT, an open-source toolbox for ArcGIS capable of efficient sampling, analysis, and spatial mapping of geometric and topological attributes of two-dimensional fracture networks. The toolbox helps to extract and plot geometric and topological information from a given two-dimensional fracture network including: rose diagrams, plots of frequency distribution and topology, and maps of topological parameters. Using a fracture network example from offshore NW Devon, United Kingdom, we illustrate the practicality and effectiveness of the toolbox. This includes computing a contour grid with 1326 subsampled regions within the fracture network, which is used to demonstrate the quantitative capabilities of the toolbox and the ability to spatially map important network properties. The toolbox will help to facilitate the increasing application of geometry and topology in the analysis and comparison of fracture networks at a range of scales. Furthermore, the integration of the NetworkGT toolbox into ArcGIS allows two-dimensional fracture networks to be interpreted, mapped, and fully analyzed within the same software package.

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More information

Accepted/In Press date: 27 March 2018
e-pub ahead of print date: 17 May 2018
Published date: 2018

Identifiers

Local EPrints ID: 424637
URI: http://eprints.soton.ac.uk/id/eprint/424637
ISSN: 1553-040X
PURE UUID: 262b368b-4e8e-4d1a-a6a5-78617ab8a97f
ORCID for David J. Sanderson: ORCID iD orcid.org/0000-0002-2144-3527

Catalogue record

Date deposited: 05 Oct 2018 11:39
Last modified: 17 Dec 2019 01:43

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Contributors

Author: Björn Nyberg
Author: Casey W. Nixon
Author: David J. Sanderson ORCID iD

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