COMPARING TWO STREAMFLOW-BASED DROUGHT INDICES


Kermen C., Onuşluel Gül G.

4th International Conference on Water Resources and Wetlands, Tulcea, Romanya, 5 - 09 Eylül 2018, ss.190-195 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Tulcea
  • Basıldığı Ülke: Romanya
  • Sayfa Sayıları: ss.190-195
  • Anahtar Kelimeler: Standardized streamflow index, streamflow drought index, drought, TESTS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Analysis of drought in terms of water resources management is crucial. In the presented study, drought analysis in Kucuk Menderes Basin in Turkey was carried out based on the streamflow measurements. Kucuk Menderes Basin holds primary significance due to the role of agriculture as the biggest sector in the area. In the analysis, Standardized Streamflow Index (SSI) and Streamflow Drought Index (SDI) were used to model drought. SSI and SDI indices were computed at multiple time steps for the period 1972-2015 at selected streamflow gages in the basin. Prior to the computation of drought severity indices, homogeneity analyses, which included Standart normal homogeneity test, Buishand range test and Pettitt test were applied for homogeneity checks on the data set. Mann-Kendall non-parametric test was also used to detect possible trends in streamflow data. The results of the study enabled the evaluation of the basin status regarding drought as well as the selection of the most appropriate index for drought analysis in the basin.