ANALISIS PERUBAHAN BENTUK TOPOGRAFI DASAR LAUT SELAT BANGKA (Studi Kasus : Selat Bangka, Perbatasan Pulau Sumatera dan Pulau Bangka)
Bangka Strait is one of area of tin exploitation in Indonesia. Bangka Strait lies between Sumatera Island and Bangka Island. Establishment of Bangka Belitung province on December 21, 2000 resulted in the loosening of regulations exploitation of tin in Bangka Strait. It caused increasing mining activ...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2013
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/123795/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=63910 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Bangka Strait is one of area of tin exploitation in Indonesia. Bangka Strait
lies between Sumatera Island and Bangka Island. Establishment of Bangka Belitung
province on December 21, 2000 resulted in the loosening of regulations exploitation
of tin in Bangka Strait. It caused increasing mining activities ranging from legal to
illegal. Those causes damage to the structure of the seabed topography Bangka Strait.
Presentation of the information is necessary to get the information of depth changes
and output volume values caused by offshore tin mining in Bangka Strait before and
after the year 2000.
The method used in this research is by analyze changes using depth
differences and output volume values which is resulted by comparing first epoch, in
1996 with the second epoch, in 2012. Reduced data acquisition is done with the
correction of the raw data to draft transducer and to vertical datum. Acquisition of
vectical datum is obtained from tidal data processing to get major tidal harmonic
constants. Major tidal harmonic constants used to obtain the value of vertical datum
and tidal type to obtain bathymetric reduced data. Analysis using software ArcGIS10
changes include making bathymetric maps, making cross sections, volume
computations, and depth changes.
The results obtained from this study is the change in the form of seabed
topography from 1996 until 2012. Changes of seabed topography of Bangka Strait
is shown by bathymetric maps and graph sections of epoch in 1996 and 2012. The
change occur in the form of additional depth of -21.5 meters depth into -21.5661
meter amounted to -0.06613 meters as the lowest depth of change and of -7 meters
to -33.852 meters amounted to -26.852 meters as the highest depth. The output
volumes occur in the form of cut volume of 797790619 cubic meters in area of
91956541.94 square meters and fill volume of 3733011.406 cubic meters in area of
2603376.187 square meters |
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