The Distribution of Flood Hydrograph Recession Constant of Seropan Underground River for Karst Aquifer Characterization
- 10.2991/978-94-6463-232-3_8How to use a DOI?
- Hydrodynamic; Karst Aquifer; Recession Curve; Underground River
This research was conducted in the Seropan underground river in the Gunung Sewu karst, Gunung Kidul Regency. This study aimed to identify some of the flood hydrograph properties of the Seropan underground river to characterize the karst aquifer. A water level data logger is installed to detect underground river water level fluctuations during the recording period. In addition, time series discharge measurements at minimum, average and maximum flow are carried out to formulate a stage-discharge rating curve. Thus, the hydrograph of the underground river during the measurement period can be determined. After that, several flood hydrographs were selected to calculate the diffuse flow recession (Kb), fissure flow (Ki), conduit flow (Kc), time to peak (Tp) and time to base flow. The analysis results show that the Seropan underground river responds fairly quickly to rain events (Tp = 3.5 h). Then, the calculation results show the value of the recession constant (Kb = 0.995; Ki = 0.863; Kc = 0.666), which means that the Seropan Cave underground river still has a large enough base flow deposit with a fairly slow release (Tb = 45.3 h). This base flow deposit is reflected in the minimum discharge during the dry season above 300 ltr/second.
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Cite this article
TY - CONF AU - Gifari Shadad Ramadhan AU - Tjahyo Nugroho Adji AU - Eko Haryono AU - Ahmad Cahyadi PY - 2023 DA - 2023/08/17 TI - The Distribution of Flood Hydrograph Recession Constant of Seropan Underground River for Karst Aquifer Characterization BT - Proceedings of the 2nd International Conference on Science Education and Sciences 2022 (ICSES 2022) PB - Atlantis Press SP - 66 EP - 73 SN - 2352-541X UR - https://doi.org/10.2991/978-94-6463-232-3_8 DO - 10.2991/978-94-6463-232-3_8 ID - Ramadhan2023 ER -