The use of archived precipitation data in the assessment of soil erosion risk in the Świętokrzyskie Province of central-southern Poland
Journal Title: Geology, Geophysics & Environment - Year 2017, Vol 43, Issue 3
Abstract
The usefulness of archived IMGW/PIHM published reports was discussed as a source of information on high total and high intensity precipitation that generates the risk of soil erosion. The study area consist of the Świętokrzyskie Province in central-southern Poland. The data were obtained mainly from yearbooks: The Atmospheric Precipitation Yearbooks and Results of pluviographic studies and precipitation of high intensity for the period 1959 – 1981. The analysis is limited to the occurrence of rainfall events that produced at least 30 mm of rainwater and were classified as A3 or higher on the Chomicz scale of rainstorms and downpours. A spatial distribution and temporal variance of analyzed rainstorms and downpours were determined and subsequently their erosivity index values were computed using a simplified Wischmeier and Smith equation. A total of 247 rainstorms and downpours were recorded at 74 weather stations in the Świętokrzyskie Province in period 1959 – 1981. Their mean duration was 82 minutes, while the mean rainfall total was 46 mm, and mean intensity was 0.86 mm•min-1. The erosivity index for the examined precipitation reached up to 6,387.8 MJ•mm•ha-1•h-1 with a median value of 455.8 MJ•mm•ha-1•h-1. These maximum value of EI was recorded at the Słupia weather station in the southwestern part of the study area. However, high erosivity rainfalls most often occurred in the lower section of the Nida Valley (in Wiślica weather station). Precipitation characterized by the greatest erosivity occurried in June and July.
Authors and Affiliations
Krzysztof Jarzyna, Joanna Krupa, Artur Zieliński
Keywords
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- EP ID EP265438
- DOI 10.7494/geol.2017.43.3.201
- Views 53
- Downloads 0
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