Incorporating elevation in rainfall interpolation in Tunisia using geostatistical methods

Feki, Haifa; Saad, Mohamed; Cudennec, Christophe

doi:10.1080/02626667.2012.710334

Cited by 48 publications

(30 citation statements)

References 14 publications

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“…Different studies have examined the variability of rainfall over time and space using statistical methods, such as principal component analysis, kriging, and standardized precipitation index (SPI) [10][11][12][13][14]. However, statistical methods have several limitations due to the complexity of the In this context, this paper examines the temporal variability of precipitation in Gabes Basin (south-east of Tunisia), which stands as a representative instance of the arid Mediterranean climate.…”

Section: Introductionmentioning

confidence: 99%

Variability of Precipitation in Arid Climates Using the Wavelet Approach: Case Study of Watershed of Gabes in South-East Tunisia

2017

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This study examines the variability of precipitation in the south-east of Tunisia through the analysis of data about annual and monthly precipitation at five stations in the Watershed of Gabes, from 1977 to 2015. Standardized precipitation ratio, wavelet and coherence wavelet analyses were applied to examine the temporal variability of monthly and annual precipitation and to determine the effect of climatic fluctuations on rainfall variability. Results of wavelet analysis showed varied energy bands at the studied stations at annual and inter-annual scales. The depicted bands spread according to intervals of 1-, 2-to 4-, 4-to 8-and 8-to 12-year cycles, obviously influenced by regional factors including altitude, proximity to the Mediterranean Sea and global fluctuations. Eventually, an analysis of wavelet coherence showed a strong correlation between precipitation and Mediterranean Oscillation (MO) in Gabes Watershed at different temporal scales. Contribution of the MO ranged between 51% and 93% of fluctuations (8-12 years) in the different examined rainfall stations.

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Section: Introductionmentioning

confidence: 99%

Variability of Precipitation in Arid Climates Using the Wavelet Approach: Case Study of Watershed of Gabes in South-East Tunisia

2017

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“…Le module SPATIAL du logiciel HydrAccess a été utilisé ici. Malgré le caractère anisotrope du milieu, la répartition homogène des postes pluviométriques intègre implicitement l'influence du gradient altitudinal sur les précipitations (Feki et al 2012 (Salmi et al 2002) ont été exploités pour effectuer ces tests.…”

Section: Données Et Analysesunclassified

Réponse hydrologique d’un bassin semi-aride aux événements pluviométriques et aménagements de versant (bassin du Merguellil, Tunisie centrale)

Ogilvie

Goulven

Leduc

et al. 2016

Hydrological Sciences Journal

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“…Un étagement hydroclimatique et biogéographique s'organise du nord au sud du pays, sous influence synoptique saisonnière de différents secteurs de la mer Méditerranéenne et de l'océan Atlantique, et sous influence locale des reliefs (Slimani et al, 2007 (Pias, 1970). cour et al, 2012;Feki et al, 2012). Les événements météoro-logiques peuvent présenter de très fortes variabilités spatiotemporelles (Cudennec et al, 2005;Chargui et al, 2013).…”

Section: Les Précipitationsunclassified

Autopsie des événements hydrométéorologiques extrêmes de 1969 en Tunisie

Boudhraâ

Cudennec

2015

Proc. IAHS

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Résumé. Retrospective forensics of the 1969 extreme hydrometeorological events in Tunisia -Tunisia experienced extreme rainfall-flood events in September and October 1969 across most of the country. These events have been gauged and reconstituted in such a detailed manner that they are now the best known extreme events in Maghreb, both because they represent the most important events ever quantified and because many land uses and hydraulic facilities have changed and been set up since then, thus changing regimes. The retrospective forensics of these events are much valuable not only in terms of hydrological and geomorphological knowledge, but also in terms of actual and future water and infrastructure management as many dams, overexploited groundwater, human settlement and security stakes are now depending and vulnerable to such possible events in the future.

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Incorporating elevation in rainfall interpolation in Tunisia using geostatistical methods

Abstract: This paper compares the performance of three geostatistical algorithms, which integrate elevation as an auxiliary variable: kriging with external drift (KED

Cited by 48 publications

References 14 publications

Variability of Precipitation in Arid Climates Using the Wavelet Approach: Case Study of Watershed of Gabes in South-East Tunisia

Variability of Precipitation in Arid Climates Using the Wavelet Approach: Case Study of Watershed of Gabes in South-East Tunisia

Réponse hydrologique d’un bassin semi-aride aux événements pluviométriques et aménagements de versant (bassin du Merguellil, Tunisie centrale)

Autopsie des événements hydrométéorologiques extrêmes de 1969 en Tunisie

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