Format:
Online-Ressource
Edition:
2. Version
Content:
Abstract: Pluvial or flash floods generated by heavy precipitation events cause high economic damages and loss of life worldwide. As discharge observations from such extreme occurrences are rare especially on the scale of small catchments or even hillslopes, data from artificial sprinkling experiments offer valuable information on runoff generation processes, overland and subsurface flow rates and response times. We conducted 132 large-scale sprinkling experiments on natural hillslopes at 23 sites with different soil types and geology on pastures and arable lands within the federal state of Baden-Württemberg in south-west Germany. The experiments were realized between 2016 and 2017. Simulated rainfall events of varying durations were based on a) the site-specific 100-year return periods of rainfall with different durations and b) the maximum rainfall intensity observed locally. The 100 m² experimental area was divided into three individual plots and overland and subsurface flow, soil moisture and water level dynamics in the temporarily saturated soil zone were measured at 1-minute resolution. Furthermore, soil characteristics were described in detail for each site. The data was carefully processed and corrected for measurement errors and combined to a consistent and easy to use database. The experiments revealed a large variability of possible runoff responses to similar rainfall characteristics. In general, agricultural fields produced more overland flow than grassland. The latter generated hardly any runoff during the first simulated 100-year event on initially dry soils. The dataset provides valuable information on runoff generation variability from natural hillslopes and may be used for the development and evaluation of hydrological models, especially those considering physical processes governing runoff generation during extreme precipitation events
Content:
Umfang und Inhalt: Here we provide a data set from 132 large-scale sprinkling experiments realized in the Federal State of Baden-Württemberg/Germany measuring overland flow and subsurface runoff during extreme rainfall intensities with return periods of 100 years or more. The data set is organized in three single files: 〈br〉1) Data on the experimental sites with information on topography, land use, vegetation cover and soil characteristics〈br〉2) Data on the single experiments with information on duration, simulated return period, intensity, start and ending time, cumulative rainfall and runoff amounts〈br〉3) Time series of single observed variables from all individual experiments with data on rainfall intensity, overland flow, subsurface runoff, soil moisture, depth of temporally saturated conditions and meteorological parameters〈br〉〈br〉In addition images of the soil profile of the experimental sites are provided. Detailed information on the content of the individual files and the names and units of the individual variables are provided in a separate README-file and in the header of each individual file
Note:
The data set contains 5 single objects with relevant information on data structure, the experimental sites, the experiment properties, the time series of observed variables and soil profile images from the individual experimental sites. Data files are provided as tab-delimited text files (.txt) and can be imported to MS Excel, R, Matlab or comparable programs.〈br〉〈br〉Details on instrumentation, installation and observation techniques can be found in the related publication in Earth System Science Data (Ries et al., 2019)
Language:
German
DOI:
10.6094/UNIFR/151460
URN:
urn:nbn:de:bsz:25-freidok-1514602
URL:
https://doi.org/10.6094/UNIFR/151460
URL:
https://nbn-resolving.org/urn:nbn:de:bsz:25-freidok-1514602
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