Pemanfaatan Citra Landsat ETM+ dan Sistem Informasi Geografis untuk Pendugaan Limpasan Permukaan di DAS Jene’berang Hulu Provinsi Sulawesi Selatan
Abstract: River basin of
Jene’berang is a main river in Gowa Regency of South Sulawesi. The aims of the
research are: 1) to study ability of Landsat ETM+imagery in collecting data and
information of land physical parameter’s to estimate runoff coefficient, 2) to
estimate and mapping spatial distribution of surface runoff using Landsat ETM+
and GIS application. The method in this research, were visual image
interpretation for extraction landform and soil infiltration parameter’s, and
digital image interpretation for extraction landcover/landuse. Data image was
Landsat ETM+ imagery. Evaluation result of interpretation Landsat ETM+ imagery
used Short Method. The processing and analyzing data used Geography Information
System with overlay and scoring the based of Cook Method to yield spatial
distribution of surface runoff map. The mapping unit used land unit approach
the result of overlay map: landform, slope and land use. Procedure of data
collecting was used stratified proporsionalrandom sampling. The result of
runoff coefficient was evaluated with hydrographanalyzing approach. The result
of this research were: 1) the data of remote sensing could be used for
estimation runoff coefficient. Interpretation of the land physical parameter’s
showed the accurate of the result Landsat ETM+ interpretation to the parameter
landform 100%, the land cover/land use 88.37%, the soil infiltration 80%, and
the slope started from surging to very steep difficult to interpretation of the
Landsat ETM+ imagery, so it was needed secondary data such as digital contour
map to extract DEM, 2) The upper of Jene’berang river basin had runoff
coefficient distribution of normal class, high class, and extreme class, the
major class was the highest class. Runoff coefficient value 64.60 % its the
highest class category.
Penulis: Nurfaika dan Nurlina
Kode Jurnal: jpfisikadd090073
