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All Journal Indonesian Journal of Geography
M. Pramono Hadi
Faculty of Geography, Universitas Gadjah Mada
Earth & Planetary Sciences

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APPLICATION INTEGRATION METHODS ON LANDSAT ETM + TO DETERMINE EARTHQUAKE POTENTIALS IN PALU GRABEN M. Rusydi H; Hartono Hartono; M. Pramono Hadi; Sunarto Sunarto
Indonesian Journal of Geography Vol 42, No 1 (2010): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.1579

Abstract

This study aims to assess the ability of the integration method at LandsatETM + imagery in recognizing object fault, main fault and secondary fault in PaluGraben. Mapping of fault and calculate earthquake potential, based of fault that isfound in Graben of Palu. The image used in this study is Landsat ETM +.Techniques used to process Landsat ETM + is a method of integration. LandsatETM+ imagery processed with ENVI software 4.4, while the mapping of faults anddetermining of length using ArcGIS 9.2.The potential of earthquakes is calculatedfrom the length of faults found in the Graben of Palu. Results obtained showed thatthe patterns of lineament as a picture of fault in the Palu Graben can be extractedfrom Landsat ETM +. Lineament of fault is seen clearly on Landsat ETM + imageprocessed with integration method and band combination, 45PC1_8. Faults arearranged in the form of map. There are 66 faults found at research sites.Magnitude earthquake 5,5 SR can be produced from the fault with a length greaterthan or equal to 9 km. If each faults contributes the same to earthquakeoccurrence, the potential incidence of earthquake with magnitude greater than orequal to 5.5 SR in the Graben of Palu is 33.8%, while the magnitude is smallerthan 5.5 SR is 66.2%. The largest magnitude that can occur in Palu Graben, 7.1SR. These results indicate that the potential earthquake destructive (≥ 5.5 SR) ofapproximately 33.8%.
Groundwater resources mapping for small island using Geoelectrical Technique the case study of Ternate Island M. Pramono Hadi; Ramdani Salam; Rahim Achmad
Indonesian Journal of Geography Vol 51, No 1 (2019): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (873.492 KB) | DOI: 10.22146/ijg.41242

Abstract

The measurement of 2D geo-electrical using Wenner Alpha configuration was conducted in the shore line of northern part of Ternate island, in order to know the depth of interface and to analyze the aquifers in conjunction with estimation of ground water potential. Water quality analysis is also conducted in some dug wells, such as in situ water temperature, electrical conductivity, pH, turbidity, dissolved oxygen, and salinity.Due to laboratory analysis, the values of measured parameters of water quality from some dug wells meets to the standards referred, especially for drinking water. The result of interpretation from geo-electrical data showed the depth of interface less than 10m.  From a drilled well data near shore line, indicate about 5m deep of interface. Base on geo-electrical survey, water quality analysis and field observation can be concluded that Ternate Island has limited potential of ground water, especially related to amount of fresh ground water. Which is now days, no alternative source yet of clean water for domestic use.  
Co-Authors Hartono Hartono M. Rusydi H Rahim Achmad Sunarto Sunarto