INVESTIGATION OF TRENDS IN METEOROLOGICAL DROUGHTS IN NİĞDE PROVINCE

Yıl 2017, Cilt: 18 Sayı: 5, 919 - 928, 31.12.2017

Onur Arslan

https://doi.org/10.18038/aubtda.293125

Cited By: 2

Öz

Investigation of trends for meteorological
droughts is important in water resources management. Nigde province is located
in Konya Closed Basin and it is one of the most drought provinces receive low
rainfall in Turkey. This study has two stages. In the first stage, Standardized
Precipitation Index (SPI) values of Nigde province were calculated for 1, 3, 6,
9, 12, 24 and 36 month time scales to identify meteorological droughts. In the
second stage, trends for meteorological droughts in Nigde province were
investigated by using Mann Kendall Rank Correlation (MKRC) test at the 95%
confidence interval. Monthly total precipitation values of Nigde meteorological
station between 1950 and 2015 were used for application. According to SPI
values, 110 drought periods lasted for six months and more were determined for
Nigde province for different time scales. The trend analysis results showed
that there were statistically significant increasing trends at the 95%
confidence interval for all time scales except 1 month time scale. This means that SPI values have shown a
tendency towards wetness in Nigde province.

Anahtar Kelimeler

Drought analysis, Trend analysis, Standardized Precipitation Index (SPI), Mann Kendall Rank Correlation (MKRC) Test

Kaynakça

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