Nonlinear responses between watershed hydrological functional connectivity and rainfall-runoff-sediment
Description
The dataset includes rainfall, runoff, and sediment data for each rainfall event from 2017 to 2024 in the Longyan Small Watershed, along with the hydrological functional connectivity index (IHC). In this study, a rainfall event is defined as a process in which the cumulative rainfall exceeds 5 mm, with a rainfall interval of no more than 6 hours, and which results in a significant change in the river water level. A total of 221 rainfall events were monitored in the watershed over these seven years.
Files
Steps to reproduce
An automatic meteorological station was installed at the outlet of the Longyan watershed, and the monitoring frequency was 5 minutes per observation of precipitation (mm), temperature (°C), wind speed (m s-1), and others. A radar water level gauge was installed at the outlet, with a monitoring frequency of 5 minutes per observation, to monitor the dynamic changes in water level in real time. A horizontal sampler was used to collect suspended sediment at the watershed outlet. The sediment yield (SY) was calculated in the laboratory by settling, drying, and weighing the collected sediment samples. The data selected for this study spanned from 2017 to 2024, including continuous monitoring data and data from typical rainfall events. A total of 221 rainfall events were monitored in the watershed during 7 years period. In this study, a rainfall event was defined as a process in which the cumulative precipitation exceeded 5 mm and the interval did not exceed 6 hours, and resulting in significant changes in the water levels of rivers.
Institutions
- Hunan Normal UniversityHunan, Changsha