| Main Author: | Astono, Widyo |
|---|---|
| Format: | Article info application/pdf eJournal |
| Terbitan: |
Ekosains
, 2012
|
| Online Access: |
http://jurnal.pasca.uns.ac.id/index.php/ekosains/article/view/6 http://jurnal.pasca.uns.ac.id/index.php/ekosains/article/view/6/7 |
Daftar Isi:
- Research about Organic Decomposition Constant Value (kd) and Reoxygenation Constant Value (ka) of Ciliwung River by taking the water sample, and hydrometry measurement to the representative points continually on rainy season and dry season has been done. Topography characteristics and hydrometry of Ciliwung river at the upper coarse, middle, and downstream give a direct influence toward those constant value significantly. Swift and shallow water flow are identified by the steep topography condition at the upper coarse, medium-deep water flow is identified by slope topography condition at the middle, and calm water flow is identified by flat topography condition at downstream. Based on the laboratory analysis for kd and hydrometry data analysis for Ka, sequentially they have a real difference at each internode with kd value about 0,334-0,387/dayon rainy season, 0,336-0,486/day on dry season dan ka value 12,61-0,25/day on rainyseason, 12,39-0,49/day on dry season. Variation of the constant value as the result of measurement is indicating that topography factor and hydrometry of the river are very determining the value of the constant.