作者: Farshad Fathian , Zohreh Dehghan , Saeid Eslamian
DOI: 10.1504/IJHST.2014.064398
关键词:
摘要: Lake Urmia water level has fluctuated during many years. We investigated data (annual maximum, minimum and average series in the period of 1966–2012) to evaluate changes based on long-term seasonal patterns over time, characteristics temporal change analysis. Our tools for mentioned analyses included trend decomposition using loess (STL); normality independence; point The results STL revealed a sustained decline occurring after last 1990s line confirmed it. showed that observed do not fulfil assumptions being independent identically normal-distributed. Therefore, non-parametric Pettitt’s test was applied identify an abrupt series, followed by analysis Mann-Kendall test. Results there is significant decreasing lake beginning 1996.