A technical framework for determining water consumption thresholds in the semi-arid Xiliao River Plain based on terrestrial water balance

Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 58, P. 102261 - 102261

Published: Feb. 26, 2025

Language: Английский

Modelling Infiltration Based on Source‐Responsive Method for Improving Simulation of Rapid Subsurface Stormflow

Water Resources Research, Journal Year: 2024, Volume and Issue: 61(1)

Published: Dec. 28, 2024

Abstract In humid hilly regions, macropore preferential flow in soils dominates the distribution of event water, thereby influencing generation and development runoff. However, mechanism how soil functions on drainage matrix absorption remains poorly understood due to complex water dynamics a multi‐porosity subsurface network. this study, based source‐responsive method that divides into diffusive domains, allocation ratio infiltrated macropores recharging were derived it was coupled with PIHM (Penn State Integrated Hydrologic Model) as PIHM‐SRM (PS). By simulating moisture process at profile scale runoff catchment scale, found PS overcame difficulty most hydrologic models describing replenishing dry soil. This leads more satisfactory performance for flood peaks outlet (CCC > 0.84) three profiles = 0.97) compared original models. Moreover, separate channel film further improves simulation accuracy peak response speed floods under rainstorms (TP 40 mm). Additionally, sensitivity analysis shows storage‐discharge capacity torrential forecasting headwaters when considering influence macropores. Finally, parameter‐predictive property PS, field‐based parameterized strategies are vital distributed modeling. will enable improve flash torrent predictions be applied scales.

Language: Английский

Assessing the informativeness of a coupled surface–subsurface watershed model for understanding debris flow: a hydrological perspective

Hydrological Sciences Journal, Journal Year: 2024, Volume and Issue: 69(9), P. 1172 - 1185

Published: May 30, 2024

Characterization of debris flow is critical to both risk assessment and hazard mitigation. Recent technologies enable on-site environmental monitoring sensors for geological disaster monitoring. However, the spatio-temporal understanding in remote mountainous areas still limited due difficulties observation networks its complex driving conditions. Here we apply a coupled surface-subsurface hydrologic model examine characteristics water movements near sites Southwest China. Our approach captured temporal dynamics infiltration, redistribution soil moisture, groundwater storage, lateral fluxes. The flux storage were informative indicators identifying location. Such informativeness was only effective when hourly analyzed. findings provide new insight into quantifying susceptibility. This study suggests that watershed modeling can be preliminary monitoring, planning management problems flow.

Language: Английский