Determination of the Relationship and Spatial Variations of Discharge and Suspended Sediment Values in Watersheds of Ardabil Province
Understanding the status of discharge and sediment of watersheds area provides an understanding of the hydrological processes. Uniform assuming of discharge and sediment in a watershed leads to the application of unit planning and management for the entire watershed and leads to a failure to achieve...
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| Format: | Article |
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University of Sistan and Baluchestan
2020-12-01
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| Series: | جغرافیا و توسعه |
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| Online Access: | https://gdij.usb.ac.ir/article_5847_15fd84e32a97c95dabd6616da5858cb9.pdf |
| _version_ | 1797804891148648448 |
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| author | ebrahim asgari Seyed Zeynalabedin Hosseini raoof mostafazadeh |
| author_facet | ebrahim asgari Seyed Zeynalabedin Hosseini raoof mostafazadeh |
| author_sort | ebrahim asgari |
| collection | DOAJ |
| description | Understanding the status of discharge and sediment of watersheds area provides an understanding of the hydrological processes. Uniform assuming of discharge and sediment in a watershed leads to the application of unit planning and management for the entire watershed and leads to a failure to achieve the goals. The present study was conducted with the aim of studying spatial variations and zoning of discharge and sediment values in Ardabil province during 10 years (2005-2014) at 37 stations with hydrometry in Ardabil province. IDW interpolation methods, simple kriging, ordinary kriging and cokrigring were investigated to determine the best method for studying spatial variaions, discharge and sediment variables. Based on the results of the evaluation indices of IDW (RMSE=1.172, MAE=0.644, MBE=-0.2, MSE=1.373) and cokriging (RMSE=0.107, MAE=0.08, MBE=-0.001, MSE=0.011) and the correlation coefficient between measured and estimated values by IDW (r=0.429) and cokriging (r=0.554) respectively, as the best method for evaluating the discharge and sediment variables were chosen. Based on the results of the IDW method, the amount of digestion in the Western parts of Ardabil province is greater (4.84-5.8 m3/s), and in the central section, this amount is the lowest (0.04-1 m3/s). According to the results of the interpolation of the sediment variable with the cokrigring method in the Western and Southern parts of Ardabil province with a higher amount of sediment (0.16-0.19 ton/ha/year) and in the central parts of the sediment deposition (0.01-0.04 ton/ha/year). |
| first_indexed | 2024-03-13T05:43:51Z |
| format | Article |
| id | doaj.art-831d42a8477940ebbb7a7352f2dd5b75 |
| institution | Directory Open Access Journal |
| issn | 1735-0735 2676-7791 |
| language | fas |
| last_indexed | 2024-03-13T05:43:51Z |
| publishDate | 2020-12-01 |
| publisher | University of Sistan and Baluchestan |
| record_format | Article |
| series | جغرافیا و توسعه |
| spelling | doaj.art-831d42a8477940ebbb7a7352f2dd5b752023-06-13T20:24:47ZfasUniversity of Sistan and Baluchestanجغرافیا و توسعه1735-07352676-77912020-12-01186114317610.22111/GDIJ.2021.58475847Determination of the Relationship and Spatial Variations of Discharge and Suspended Sediment Values in Watersheds of Ardabil Provinceebrahim asgari0Seyed Zeynalabedin Hosseini1raoof mostafazadeh2دانشجوی دکتری علوم و مهندسی آبخیز، دانشگاه یزد، یزد، ایرانFaculty of Natural Resources & Desert Studies, Yazd Universityدانشیار گروه منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل، ایرانUnderstanding the status of discharge and sediment of watersheds area provides an understanding of the hydrological processes. Uniform assuming of discharge and sediment in a watershed leads to the application of unit planning and management for the entire watershed and leads to a failure to achieve the goals. The present study was conducted with the aim of studying spatial variations and zoning of discharge and sediment values in Ardabil province during 10 years (2005-2014) at 37 stations with hydrometry in Ardabil province. IDW interpolation methods, simple kriging, ordinary kriging and cokrigring were investigated to determine the best method for studying spatial variaions, discharge and sediment variables. Based on the results of the evaluation indices of IDW (RMSE=1.172, MAE=0.644, MBE=-0.2, MSE=1.373) and cokriging (RMSE=0.107, MAE=0.08, MBE=-0.001, MSE=0.011) and the correlation coefficient between measured and estimated values by IDW (r=0.429) and cokriging (r=0.554) respectively, as the best method for evaluating the discharge and sediment variables were chosen. Based on the results of the IDW method, the amount of digestion in the Western parts of Ardabil province is greater (4.84-5.8 m3/s), and in the central section, this amount is the lowest (0.04-1 m3/s). According to the results of the interpolation of the sediment variable with the cokrigring method in the Western and Southern parts of Ardabil province with a higher amount of sediment (0.16-0.19 ton/ha/year) and in the central parts of the sediment deposition (0.01-0.04 ton/ha/year).https://gdij.usb.ac.ir/article_5847_15fd84e32a97c95dabd6616da5858cb9.pdfspatial variationkrigingsediment rating curvevariogramardabil province |
| spellingShingle | ebrahim asgari Seyed Zeynalabedin Hosseini raoof mostafazadeh Determination of the Relationship and Spatial Variations of Discharge and Suspended Sediment Values in Watersheds of Ardabil Province جغرافیا و توسعه spatial variation kriging sediment rating curve variogram ardabil province |
| title | Determination of the Relationship and Spatial Variations of Discharge
and Suspended Sediment Values in Watersheds of Ardabil Province |
| title_full | Determination of the Relationship and Spatial Variations of Discharge
and Suspended Sediment Values in Watersheds of Ardabil Province |
| title_fullStr | Determination of the Relationship and Spatial Variations of Discharge
and Suspended Sediment Values in Watersheds of Ardabil Province |
| title_full_unstemmed | Determination of the Relationship and Spatial Variations of Discharge
and Suspended Sediment Values in Watersheds of Ardabil Province |
| title_short | Determination of the Relationship and Spatial Variations of Discharge
and Suspended Sediment Values in Watersheds of Ardabil Province |
| title_sort | determination of the relationship and spatial variations of discharge and suspended sediment values in watersheds of ardabil province |
| topic | spatial variation kriging sediment rating curve variogram ardabil province |
| url | https://gdij.usb.ac.ir/article_5847_15fd84e32a97c95dabd6616da5858cb9.pdf |
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