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Conference of the Arabian Journal of Geosciences

CAJG 2018: Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources pp 21–24Cite as

Mean Rainfall Variability Effects on the Hydrological Response of Medjerda High Valley (Tunisia)

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Abstract

The present study is an attempt to evaluate the spatial and temporal rainfall variability of the Medjerda High Valley on the hydrological response of the watershed. Mean time series were collected from 1980/1981 to 2014/2015 for 16 rain gauges covering the studied basin. Missing data were reconstructed using the ponderation method. Subsequently, breaks in each rainfall time series were detected by three tests: Pettitt, SNHT and Buishand’s using Xlstat software. These tests and the calculation of rainfall indices reveal an alternation of wet and dry episodes with very high rainfall excesses. Spatial interpolation of rainfall was conducted on an annual, monthly, and seasonal basis by three methods: Theissen polygon, Spline, and ordinary Kriging. The predicted mean precipitation of the Medjerda High Valley was used for the hydrological study. Thus, the variation of the contributions, their relation with the rainfall and their importance to the basin were studied via the hydrological model GR2m. The flow and, consequently, the water resources constitute the hydrological response of the watershed to the rainfall impulses.

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References

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Author information

Authors and Affiliations

  1. Silvo-Pastoral Institute of Tabarka, 8110, Tabarka, Tunisia

    Sahar Abidi

  2. Higher School of Engineers of Medjez El Beb-Tunisia, 9070, Beja, Tunisia

    Olfa Hajji & Boutheina Hannachi

  3. Agronomy National Institute of Tunisia, 1082, Tunis, Tunisia

    Hammadi Habaieb

Authors
  1. Sahar Abidi
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  2. Olfa Hajji
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  3. Boutheina Hannachi
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  4. Hammadi Habaieb
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Corresponding author

Correspondence to Sahar Abidi .

Editor information

Editors and Affiliations

  1. Laboratory of Cartography and Applied Geology, School of Engineering (ISEP), Polytechnic of Porto, Porto, Portugal

    Helder I. Chaminé

  2. Sapienza University of Rome, Rome, Italy

    Maurizio Barbieri

  3. School of Natural Sciences and Engineering, Ilia State University, Tbilisi, Georgia

    Ozgur Kisi

  4. Water Research Center, Sultan Qaboos University, Muscat, Oman

    Mingjie Chen

  5. Institute for Geology, TU Bergakademie Freiberg, Freiberg, Germany

    Broder J. Merkel

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Abidi, S., Hajji, O., Hannachi, B., Habaieb, H. (2019). Mean Rainfall Variability Effects on the Hydrological Response of Medjerda High Valley (Tunisia). In: Chaminé, H., Barbieri, M., Kisi, O., Chen, M., Merkel, B. (eds) Advances in Sustainable and Environmental Hydrology, Hydrogeology, Hydrochemistry and Water Resources. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01572-5_5

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