Probabilistic approach to modelling of recession curves


Aksoy H. , BAYAZIT M., WITTENBERG H.

HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES, cilt.46, ss.269-285, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 46 Konu: 2
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1080/02626660109492821
  • Dergi Adı: HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
  • Sayfa Sayıları: ss.269-285

Özet

Recession curves of daily streamflow hydrographs are analysed by a probabilistic approach. Flow of a day on a recession curve is calculated by multiplying the previous day's flow with a value of K smaller than one; K, defined as the ratio of the flows or successive days on the recession curve, was determined from observed daily flow time series. The range of k is divided into three class intervals. A procedure using the concept of gradually increasing Values of K is adopted. For this, transition probabilities and average values of K are determined for each class interval and each month of the year. A recession curve can be generated, once the peak flow is known, by the probabilistic approach. The procedure allows nonlinear, seasonal and stochastic effects in flow recession of a river to be considered.