SPATIAL ANALYSIS OF PRECIPITATION VARIATIONS IN MIDDLE ZAGROS USING GEO-STATISTICAL METHODS (1995-2004)

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SAFARRAD TAHER; FARAJI SABOKBAR HASSANALI; AZIZI GHASEM; ABBASPOUR RAHIMALI

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Journal: Geography and Development Year:2013 | Volume:11 | Issue:31 Page(s): 149-163

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Title

SPATIAL ANALYSIS OF PRECIPITATION VARIATIONS IN MIDDLE ZAGROS USING GEO-STATISTICAL METHODS (1995-2004)

Author(s)

SAFARRAD TAHER | FARAJI SABOKBAR HASSANALI | AZIZI GHASEM | ABBASPOUR RAHIMALI | Issue Writer Certificate

Keywords

MODELINGQ2

GEO STATISTICSQ1

VARIOGRAMQ2

ANISOTROPYQ2

TRENDQ2

PRECIPITATIONQ2

MIDDLE ZAGROSQ2

Abstract

This study aims to describe and model the spatial variations of PRECIPITATION in the mountainous areas of MIDDLE ZAGROS using geo statistical techniques. To this aim, a dataset was obtained from 249 PRECIPITATION recording stations of Meteorological organization (climatologic, synoptic, and rain gauge) and Ministry of Energy of Iran in a 10-year period (1995-2004). Among these stations, 219 stations were used for MODELING the spatial variability of PRECIPITATION, and the remaining 30 stations were used to evaluate the proposed method. To check the normality of data and detect the TREND, Kolmogorov- Smirnov test and TREND Analysis of ESRI Arc GIS 9.3 is utilized, respectively. An evaluation of simple, ordinary, and general kriging with and without auxiliary variables of altitude, latitude, slope, and distance from ridges show that the ordinary kriging with latitude and distance from the ridge auxiliary variables are more precise. To illustrate the spatial variability of PRECIPITATION in the area of study, profiles of PRECIPITATION and altitudes perpendicular to ridges were plotted in the 50 Km intervals. These profiles make evidence that despite the relative correlation between PRECIPITATION and topography, the points with maximum PRECIPITATION does not correspond to the highest topographic points. Moreover, leeward and windward sides present different behaviors with respect to PRECIPITATION. Finally, it is found that topographies act as barriers in the way of air masses, thus air masses in clash with mountain release large amounts of their humidity.

Cites

SPATIAL ANALYSIS OF PRECIPITATION WITH ELEVATION AND DISTANCE TO SEA (CASE STUDY: SISTAN AND BALUCHESTAN PROVINCE)

References

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APA: Copy

SAFARRAD, TAHER, FARAJI SABOKBAR, HASSANALI, AZIZI, GHASEM, & ABBASPOUR, RAHIMALI. (2013). SPATIAL ANALYSIS OF PRECIPITATION VARIATIONS IN MIDDLE ZAGROS USING GEO-STATISTICAL METHODS (1995-2004). GEOGRAPHY AND DEVELOPMENT, 11(31), 149-163. SID. https://sid.ir/paper/405525/en

Vancouver: Copy

SAFARRAD TAHER, FARAJI SABOKBAR HASSANALI, AZIZI GHASEM, ABBASPOUR RAHIMALI. SPATIAL ANALYSIS OF PRECIPITATION VARIATIONS IN MIDDLE ZAGROS USING GEO-STATISTICAL METHODS (1995-2004). GEOGRAPHY AND DEVELOPMENT[Internet]. 2013;11(31):149-163. Available from: https://sid.ir/paper/405525/en

IEEE: Copy

TAHER SAFARRAD, HASSANALI FARAJI SABOKBAR, GHASEM AZIZI, and RAHIMALI ABBASPOUR, “SPATIAL ANALYSIS OF PRECIPITATION VARIATIONS IN MIDDLE ZAGROS USING GEO-STATISTICAL METHODS (1995-2004),” GEOGRAPHY AND DEVELOPMENT, vol. 11, no. 31, pp. 149–163, 2013, [Online]. Available: https://sid.ir/paper/405525/en

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