PEMANFAATAN CITRA ALOS AVNIR-2 UNTUK KAJIAN PENDUGAAN INTRUSI AIR ASIN DI MUARA SUNGAI JAJAR, KABUPATEN DEMAK
| Main Authors: | , VINA NURUL HUSNA, , Dr. Nurul Khakhim, M.Si. |
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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/128940/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=69315 |
Daftar Isi:
- Seawater intrusion is an usual phenomena but research about it is really seldom. So this research has goals for detecting seawater intrusion from remote sensing data and knowing how is the effectiveness of remote sensing data for detecting indicator of seawater intrusion. Remote sensing couldn�t detect information about seawater intrusion directly but its need some approximation like yellow substance. Yellow substance has a negative strong connection with salinity and spectral value approach from remote sensing image. Detection of yellow substance from remote sensing images derived from Normalized Difference Vegetation Index (NDVI) transformation and using Lyzenga transformation for knowing the correlation between salinity and its pixel value. We use ALOS AVNIR-2 as data from remote sensing image with recording date on 8 august 2010. The result from digital image processing as a qualitative salinity then we should do land surveying and laboratory check for converting it to quantitative salinity. Correlation analysis used to know relations between NDVI and salinity. The result of correlation value is -0,65, it means that NDVI and salinity has a negative strong connections, when the NDVI become higher so the salinity become shorter. Accuracy test is the test for knowing how is the accuracy of digital image processing with the reality now and its using interval confidency. The result shows that the model 90% accurate for confidence degree 91%. The result of land surveying shows that Jajar River has been occurs seawater intrusion along 6,7 km from mouth of river. Keywords : Seawater Intrusion, Estuary, ALOS, Yellow Substance, Lyzenga.