NALYSIS OF DEPTH-AREA-DURATION CURVES OF RAINFALL IN SEMI-ARID AND ARID REGION USING GEOSTATISTICAL METHODS (CASE STUDY: SIRJAN)

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SOLAIMANI K.; HABIB NEZHAD M.; ABKAR A.; BANI ASADI M.

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Journal: Desert Year:2006 | Volume:11 | Issue:1 Page(s): 31-42

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Information Journal Paper

Title

NALYSIS OF DEPTH-AREA-DURATION CURVES OF RAINFALL IN SEMI-ARID AND ARID REGION USING GEOSTATISTICAL METHODS (CASE STUDY: SIRJAN)

Author(s)

SOLAIMANI K. | HABIB NEZHAD M. | ABKAR A. | BANI ASADI M. | Issue Writer Certificate

Keywords

SIRJANQ3

KRIGINGQ3

ISOHYETS MAPSQ2

D.A.D CURVEQ3

Abstract

Drawing isohyet maps is one of the main steps in preparation of depth-area-duration (DAD) curves. To draw these maps different methods are used such as using rainfall gradient, simple classic statistical methods and complicated Geostatistical methods like KRIGING method. For this purpose, after collection of data and information related to 59 rainfall gauging stations in the study area, the dominant and maximum rainfall for duration of one to three days were selected. Then, the relationship between rainfall and the elevation were investigated for drawing the ISOHYETS MAPS, but due to insignificant difference of this relationship, two methods of Geostatistical KRIGING and inverse distance with powers of 1 to 3, were evaluated to draw the ISOHYETS MAPS and determination of the average rainfall. To evaluate the above two methods, mean absolute error (MAE) was used in this research. The results of this evaluation showed that the KRIGING method is better than inverse distance method for determination of average rainfall of the region. Then, using KRIGING method, the ISOHYETS MAPS of one to three-day duration and DAD curves were drawn. By using this method, conversion of point rainfall to average rainfall for an area of up to 20000 Km2 of the area under study is possible. Also, the investigation of the curves shows that the ratio of the amount of rainfall at the center to the amount of rainfall at an area of 20000 Km2 is 1.98, 1.74 and 1.48 for duration of 1, 2 and 3- day, respectively.

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APA: Copy

SOLAIMANI, K., HABIB NEZHAD, M., ABKAR, A., & BANI ASADI, M.. (2006). NALYSIS OF DEPTH-AREA-DURATION CURVES OF RAINFALL IN SEMI-ARID AND ARID REGION USING GEOSTATISTICAL METHODS (CASE STUDY: SIRJAN). DESERT (BIABAN), 11(1), 31-42. SID. https://sid.ir/paper/5299/en

Vancouver: Copy

SOLAIMANI K., HABIB NEZHAD M., ABKAR A., BANI ASADI M.. NALYSIS OF DEPTH-AREA-DURATION CURVES OF RAINFALL IN SEMI-ARID AND ARID REGION USING GEOSTATISTICAL METHODS (CASE STUDY: SIRJAN). DESERT (BIABAN)[Internet]. 2006;11(1):31-42. Available from: https://sid.ir/paper/5299/en

IEEE: Copy

K. SOLAIMANI, M. HABIB NEZHAD, A. ABKAR, and M. BANI ASADI, “NALYSIS OF DEPTH-AREA-DURATION CURVES OF RAINFALL IN SEMI-ARID AND ARID REGION USING GEOSTATISTICAL METHODS (CASE STUDY: SIRJAN),” DESERT (BIABAN), vol. 11, no. 1, pp. 31–42, 2006, [Online]. Available: https://sid.ir/paper/5299/en

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