THE MORPHOMETRICAL INITIATION STAGE OF THE PIEZOMETRIC STRUCTURAL COMPARTMENT USING SATTELITE IMAGERY IN THE SOUTHERN SLOPE OF MERAPI

Abstract

The study area is on the southern slope of Merapi Mountain in Yogyakarta, and focus on the relation of satellite imagery with piezometric and structure compartment. The preliminary geological study of satellite imagery is using a digital elevation model and Landsat 8 data extraction. The morphometry initiation is used to get the structure lineaments compartment, and it came from morphometry quantification value to indicating the implication of geological structure controls to the groundwater level distribution. The methods emphasize the quantitative descriptive approach form morphometry equation. Thus quantitative morphometry methods are then follow up by statistical and hierarchical cluster analysis of piezometric. The result of morphometry variable shows the structural lineament creates and control by active tectonics, and it implacable to the piezometric spatial distribution besides the implication of volcanic deposit variation, uplifting and asymmetric river mature form. The statistical analysis represents a relation between structure lineament with the piezometric, and the analysis result imaging on the digitized maps for each compartment compares with the trends of piezometric. The result of this study emphasizes that the initiation of morphometry is needed to use to compartmentation the structure lineaments, and the compartment becomes the controller of piezometric distribution.