Use of AIRSAR/JERS-1 SAR Datasets in Geologic/Structual Mapping at the Northern Negros Geothermal Project (NNGP) Negros Occidental, Philippines

Abstract

A remote sensing study of the Northern Negros Geothermal Project (NNGP) was conducted using Airborne Synthetic Aperture Radar (AIRSAR) AND JERS-7 SAR images. A digital elevation model (DEM) was generated fmm fhe topographic SAR (TOPSAR) data sets where various hitlshading maps were extracted to emphasize the general geology and the structural configuration of the study area. Due to the high resolution of the imagery, geologic mapping interpretations were done to refine the traditional and existing aerial photography interpretations including the volcanic history and its implication to the project.

The over-all result of this study have dealt with (1) the delineation of the semi-detailed geology at NNGP, thereby, giving way to the reinterpretation of the volcanic history of Canlaon volcano; (2) refinement of the sttuctural map of Panem and Leynes (7996) with the establishment of chmnological order of fault events where NW, WNW and ENE predominates the field; (3) delineation of new structural targets at Pataan area (e.9. Mambucal-B and -C, Asia-C, Asia Splay-A, -6, - C and -D, Catugasan-B Splay, Catugasan-C and -0,K inabkaban-6, Kinabkaban-C and PafaanLC Splay); (4) confinnation of surface and subsurface interception of Talave Formation (rather than Caliling Formation) with findings of PNOC-EDC (2001); and (5) singling out of Hardin Sang Balo (rather than Tubidiao crater/ collapse and Saray dome / collapse) as the pmbable heat some being tapped by the Pataan sector of NNGP.