دورية أكاديمية
Set-up and calibration of a portable small scale rainfall simulator for assessing soil erosion processes at interrill scale
| العنوان: | Set-up and calibration of a portable small scale rainfall simulator for assessing soil erosion processes at interrill scale |
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| المؤلفون: | J. J. Zemke |
| المصدر: | Cuadernos de Investigación Geográfica, Vol 43, Iss 1, Pp 63-81 (2017) |
| بيانات النشر: | Universidad de La Rioja, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Geography (General) |
| مصطلحات موضوعية: | runoff, soil erosion, rainfall erosivity, rainfall kinetic energy, rainfall simulation, Geography (General), G1-922 |
| الوصف: | A portable rainfall simulator was built for assessing runoff and soil erosion processes at interrill scale. Within this study, requirements and constraints of the rainfall simulator are identified and discussed. The focus lies on the calibration of the simulator with regard to spatial rainfall homogeneity, rainfall intensity, drop size, drop fall velocity and rainfall kinetic energy. These parameters were obtained using different methods including a Laser Precipitation Monitor. A detailed presentation of the operational characteristics is given. The presented rainfall simulator setup featured a rainfall intensity of 45.4 mm·h-1 with a spatial homogeneity of 80.4% based on a plot area of 0.64 m². Because of the comparatively low drop height (2 m), the diameter-dependent terminal fall velocity (1.87 m·s-1) was lower than benchmark values for natural rainfall. This conditioned also a reduced rainfall kinetic energy (4.6 J·m-2·mm-1) compared to natural rainfall with same intensity. These shortfalls, a common phenomenon concerning portable rainfall simulators, represented the best possible trade-off between all relevant rainfall parameters obtained with the given simulator setup. Field experiments proved that the rainfall erosivity was constant and replicable. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian |
| تدمد: | 0211-6820 1697-9540 56014406 |
| Relation: | https://publicaciones.unirioja.es/ojs/index.php/cig/article/view/3129; https://doaj.org/toc/0211-6820; https://doaj.org/toc/1697-9540 |
| DOI: | 10.18172/cig.3129 |
| URL الوصول: | https://doaj.org/article/9938c38a56014406a499b64f064c70c1 |
| رقم الأكسشن: | edsdoj.9938c38a56014406a499b64f064c70c1 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 02116820 16979540 56014406 |
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| DOI: | 10.18172/cig.3129 |