PROBABILITY WEIGHTED MOMENTS AND THEIR EFFECTS ON THE RAINFALL DEPTH-DURATION-FREQUENCY CURVES

AŞIKOĞLU Ö. L., Benzeden E.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.26, pp.259-269, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26
  • Publication Date: 2017
  • Journal Name: FRESENIUS ENVIRONMENTAL BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.259-269
  • Keywords: Probability Weighted Moments (PWM), Generalized Extreme Value (GEV) Distribution, Generalized Depth-Duration-Frequency (DDF) relationships
  • Dokuz Eylül University Affiliated: Yes

Abstract

The generalized depth duration frequency (DDF) relationships that define rainfall depth as the function of rainfall duration (d) and frequency or recurrence interval (T) are extensively used for design purposes in hydrological applications. To generalize the DDF relationships at a site, the parameters of the selected parent distribution must provide several divergence criteria (i.e., quantile functions of different durations must not intersect each other).