Analysis of El Nino signals on Turkish streamflow and precipitation patterns using spectral analysis

KALAYCI S., KARABÖRK M. Ç., KAHYA E.

Fresenius Environmental Bulletin, vol.13, no.8, pp.719-725, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 8
  • Publication Date: 2004
  • Journal Name: Fresenius Environmental Bulletin
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.719-725
  • Istanbul Technical University Affiliated: Yes

Abstract

Interannual variability of Turkish stream-flow and precipitation patterns were analyzed in the frequency domain to justify the signals of the warm phase of the Southern Oscillation (El Nino) that were previously detected using a different approach For this purpose, spectral analysis was carried out to record these two climatic parameters from 1964 to 1993. Some statistically significant periodicities in the 2-6 years band, which are assumed to be associated with the El Nino occurrences, were found in the regional modular series of both parameters in Turkey.