SPATIAL ANALYSIS OF CLIMATIC DROUGHT IN THREE COASTAL PROVIDENCES OF CASPIAN SEA

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RAIESI M.B.; VAFAKHAH M.

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Journal: NATURAL ECOSYSTEMS OF IRAN Year:2011 | Volume:1 | Issue:3 Page(s): 1-11

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Information Journal Paper

Title

SPATIAL ANALYSIS OF CLIMATIC DROUGHT IN THREE COASTAL PROVIDENCES OF CASPIAN SEA

Author(s)

RAIESI M.B. | VAFAKHAH M. | Issue Writer Certificate

Keywords

KRIGINGQ2

COKRIGINGQ2

INVERSE DISTANCE WEIGHTINGQ2

SPI-INDEXQ2

COASTAL PROVIDENCES OF CASPIAN SEAQ2

Abstract

Drought is one of the greatest natural disasters that have more effect on human societies than the other natural disasters. Monitoring systems are very important to management and providing drought fighting plans and therefore we use quantitative index to explain this phenomenon. These indices are calculated in the points, so we have to process them spatially by the means of interpolation methods such as geostatistic. In this research, capability of KRIGING, CoKRIGING and INVERSE DISTANCE WEIGHTING (IDW) to spatial analysis of climatic drought in three coastal providence of Caspian Sea were processed. The drought analysis was done by use of 30 year dataset belonging to meteorological gauge stations and then climatic drought maps were provided and assessed. The variographic analysis confirmed that the SPI index is a spatial index meanwhile showed that the KRIGING method has more accuracy in drought zoning than the other methods. Examination of correlation among samples based on attributing spatial variance (C) to (C+C0) which is more than the 0.5 showed that SPI index has moderate to strong spatial structure. It shows that the climatic drought has spatial correlation in this region. In this area, the spatial correlation of meteorological gauged stations has been effective until 800 km.

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APA: Copy

RAIESI, M.B., & VAFAKHAH, M.. (2011). SPATIAL ANALYSIS OF CLIMATIC DROUGHT IN THREE COASTAL PROVIDENCES OF CASPIAN SEA. NATURAL ECOSYSTEMS OF IRAN, 1(3), 1-11. SID. https://sid.ir/paper/215118/en

Vancouver: Copy

RAIESI M.B., VAFAKHAH M.. SPATIAL ANALYSIS OF CLIMATIC DROUGHT IN THREE COASTAL PROVIDENCES OF CASPIAN SEA. NATURAL ECOSYSTEMS OF IRAN[Internet]. 2011;1(3):1-11. Available from: https://sid.ir/paper/215118/en

IEEE: Copy

M.B. RAIESI, and M. VAFAKHAH, “SPATIAL ANALYSIS OF CLIMATIC DROUGHT IN THREE COASTAL PROVIDENCES OF CASPIAN SEA,” NATURAL ECOSYSTEMS OF IRAN, vol. 1, no. 3, pp. 1–11, 2011, [Online]. Available: https://sid.ir/paper/215118/en

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