The development of geoinformatics based framework to quantify gully erosin

Farha Sattar, R. J. Wasson, Diane Pearson, Guy Boggs, Waqar Ahmad, Muhammad Nawaz

    Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedings

    Abstract

    In this study a methodological framework is presented using tools and techniques of geoinformatics to quantify gully erosion. The study was conducted in the Fergusson catchment; a sub-catchment of the Daly river, Northern Australia. Various airborne and field based reconnaissance surveys have shown that the catchment in places is severely affected by gully erosion producing large amounts of sediment. The framework applied comprised of Cartosat-1 (2.5 m resolution) stereo imagery 2008, topographic maps 1:20,000, 1 Second (~ 30m) SRTM level 2 DEM, Stereo Aerial Photos of 1948 at the scale of 1:30,000 and Differential GPS data points. Oriented images were produced using Image Analysis software and a Digital Surface Model was generated. Stereo Analyst for ArcGIS software was used for three dimensional visualization of the earth surface and identification and mapping of gullies. Stereo Aerial Photos of 1948 were orthorectified and three dimensional views were generated for each pair of photographs and a map of gullies in1948 was created. GIS based analysis was performed to measure the volumetric changes of gully erosion between 2008 imagery and 1948 aerial photographs. A spatial database was developed incorporating the gully morphological and soil loss information. This study will contribute to the construction of a sediment budget of the Daly River catchment.

    Original languageEnglish
    Title of host publication10th International Multidisciplinary Scientific Geoconference and EXPO - Modern Management of Mine Producing, Geology and Environmental Protection, SGEM 2010
    Pages1159-1166
    Number of pages8
    Volume1
    Publication statusPublished - 2010
    Event10th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2010 - Varna, Bulgaria
    Duration: 20 Jun 201026 Jun 2010

    Conference

    Conference10th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2010
    CountryBulgaria
    CityVarna
    Period20/06/1026/06/10

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  • Cite this

    Sattar, F., Wasson, R. J., Pearson, D., Boggs, G., Ahmad, W., & Nawaz, M. (2010). The development of geoinformatics based framework to quantify gully erosin. In 10th International Multidisciplinary Scientific Geoconference and EXPO - Modern Management of Mine Producing, Geology and Environmental Protection, SGEM 2010 (Vol. 1, pp. 1159-1166)