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Возможности и ограничения реконструкции стока рек и условий засушливости Поволжья Методами дендрохронологии
Data series of hydrometeorological observations for the Volga Region and Russia as a whole are covered roughly up to 150 past years. The longer series are single. Length of hydrological records for the river runoff is even lesser, up to 50-60 years. The dendrochronological method gives an opportunity to extend exist- ing observational data series into past, if a significant relationship between radial tree growth and a parameter to be reconstructed exists. For the Volga region, we have developed nine pine (Pinus sylvestris L.) tree ring chronologies and one regional master-chronology (MasterTY). Then, the model is created on the basis of the chronologies, and the reconstruction of runoff for Ilet river (1827-2013) and Palmer Drought Severity Index (1825-2013) is undertaken. The results demonstrate the feasibility of such reconstructions for the Volga region. However, more accurate results are obtained in the reconstruction of the long-term dynamics.