Citation
Abstract
This study aims to clarify the contributions of pre-event water to storm runoff using environmental tracers (dis‐ solved inorganic ions and stable isotopes) in a tropical forested catchment in Puchong, Selangor, Malaysia. We performed intensive sampling campaigns of stream water and throughfall for two storm events in July and November 2018. The discharge showed a low peak of 0.13 mm/h in event 1, with 18 mm of total rainfall, whereas event 2, with 50 mm of total rainfall, showed a quick discharge peak of 1.17 mm/h and a slow recovery of 0.39 mm/h. The nitrate concentration in the stream water during event 2 was higher than that in event 1. The temporal variations in nitrate ions indicate that subsurface water provided a dominant storm‐ flow in event 2. Hydrograph separations using silicate as a tracer revealed that pre-event water was the dominant com‐ ponent of the storm hydrograph (58–98%). Our results sug‐ gest that pre-event water plays an essential role in storm runoff of headwaters in humid tropical regions.
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Official URL or Download Paper: https://www.jstage.jst.go.jp/article/hrl/17/2/17_2...
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Additional Metadata
Item Type: | Article |
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Divisions: | Faculty of Forestry and Environment |
DOI Number: | https://doi.org/10.3178/hrl.17.28 |
Publisher: | Japan Society of Hydrology and Water Resources |
Keywords: | Hydrograph separation; Stable isotopes; Pre‑event water contribution; Metamorphic sedimentary rocks; Selangor; Malaysia; Clean water and sanitation; Climate action; Sustainable cities and communities |
Depositing User: | Mr. Mohamad Syahrul Nizam Md Ishak |
Date Deposited: | 27 May 2024 01:16 |
Last Modified: | 27 May 2024 01:16 |
Altmetrics: | http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3178/hrl.17.28 |
URI: | http://psasir.upm.edu.my/id/eprint/108962 |
Statistic Details: | View Download Statistic |
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