APLIKASI TEKNIK PENGINDERAAN JAUH MULTI-TEMPORAL UNTUK KAJIAN LIMPASAN PERMUKAAN AKIBAT PERUBAHAN PENUTUP LAHAN, KASUS DI DAS GROMPOL JAWA TENGAH
| Main Authors: | , PUGUH DWI RAHARJO, , Prof. Dr. Totok Gunawan, M.S |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/133236/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=73800 |
Daftar Isi:
- Grompol watershed which is one of the Bengawan Solo Sub-watershed located in Karangnyar Regency, Central Java. Grompol watershed during the last 20 years changes in land cover affect runoff. In this watershed is ungauges stream that make monitoring of surface runoff is difficult to do. The purpose of this study was to determine the accuracy of Landsat imagery in extraction of land cover and hydrologic soil group, as well as calculate the level of accuracy of the calculation method of the SCS-CN runoff using remote sensing data. Validation models in Samin watershed in which contained flow of data in 1994 and 2013 and has the same characteristics as Grompol watershed. Using multi-temporal remote sensing data of Landsat-5 (1994) and Landsat-8 (2013). Knowledge-based methods used in land cover extraction based on NDVI relationship with landforms. Units of each hydrology soil group based on landforms.NDVI transformation is divided into 7 classes and landforms are classified into 20 classes in translating of land cover tipe SCS-CN. Land cover type SCSCN Farmstead--buildings on fluvial and denudasional landforms mixed with the use of wetland, so on the type of digital classification aided by maximum likelihood. Accuracy of land cover obtained give good results, which is about 85.17%. Runoff estimation of lumped system on rainfall on January 30, 1994 is 42 mm with watershed volumes about 5298850.2 m3, and rainfall on January 1, 2013 amounted to 40 mm with a total volume m3 5046524.0 m3. Estimation of runoff distributed system in 1994 and 2013 increased depth of 1-28 mm runoff around 18:40% and 57-84 mm around 28.51%, while decreasing the thickness of the runoff occurs in 43-56 mm about 46.01%. As a validation test of the model then used the ratio of discharge estimated with discharge measured at the watershed Samin. The comparison results obtained on January 30, 1994 obtained approximately 81.27% accuracy, in which discharge estimated is 6.77 m3/second and discharge measured is 8.33 m3/second. Rainfall on January 1, 2013 accuracy obtained approximately 97.24%, in which discharge estimated is 13,05 m3/second and discharge measured is 12.69m3/second.