DEFINISI NUMERIK JARINGAN DRAINASE DAN DAERAH PENGALIRAN SUNGAI DARI MODEL ELEVASI DIGITAL UNTUK MODEL HIDROLOGI
ABSTRACT: A set of computer
program and algorithm for an automatic determination of drainage network and
River Basin Area (RBA) by means of a Digital Elevation Model (DEM) is presented. The algorithms execute such tasks
as DEM aggregation, identify and treatment of depression, increase of flat area
relief; determination of current direction; determination of boundary of RBA
and Sub-RBA, determination of River Basin Upstream Area and evaluation of
drainage network composition. A computer program was made using a software,
known as the Visual Basic. The aims of
the development of the computer program and algoritms were to quickly determine
the properties value of current direction drainage network and Sub-RBA based on
the available DEM which may be further used in the development of water run-off
models, RBA discrete, or used for statistical analysis as well as to evaluate
the topology of drainage network. Result obtained from DEM evaluation were then
selected and presented. Such an approach may be applicable for studying
hydrology and geomorphology.
Key Words: drainage network,
river basin area, digital elevation model
Penulis: A. Adi Sulianto, A.
Tunggul Sutan Haji
Kode Jurnal: jppertaniandd060020
