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Indirect estimation of Arvand River discharge using numerical modeling and remote sensing: A novel approach in water resources management | ||
| مدل سازی و مدیریت آب و خاک | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 10 مهر 1404 | ||
| نوع مقاله: Special Issue: New Approaches to Water and Soil Management and Modeling | ||
| شناسه دیجیتال (DOI): 10.22098/mmws.2025.18232.1662 | ||
| نویسندگان | ||
| Abbas Einali* 1؛ Masoud Sadrinasab2؛ Mohammad Akbarinasab3؛ Jafar Azizpour4 | ||
| 1Assistant Professor of Physical Oceanography, Faculty of Environmental and Marine Sciences, University of Mazandaran, Mazandaran, Iran | ||
| 2Associate Professor of Physical Oceanography, Department of Environmental Design, University of Tehran, Tehran, Iran | ||
| 3Associate Professor of Physical Oceanography, Faculty of Environmental and Marine Sciences, University of Mazandaran, Mazandaran, Iran | ||
| 4Assistant Professor of Physical Oceanography, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran | ||
| چکیده | ||
| The river discharge is the most critical parameter in the hydrologic cycle, and its measurement is vital considering climate change and water resource management. Due to local problems, the discharge of the Arvand River located in the Middle East (hot-dry climate) has not yet been measured directly. The Arvand River is considered the main source of freshwater inflow in the Persian Gulf and plays an essential environmental role in the northwest coastal zones of the Persian Gulf. For this reason, an indirect method was derived and used for the Arvand River discharge in this study. This method estimates the river discharge based on the river plume dimension. For this purpose, numerical modeling extracted the relationship between river discharge and river plume area in the first part. Thus, the Persian Gulf's temperature, salinity, and water circulation were modeled using FVCOM. In the following, the sensitivity of the river plume to the discharge and wind was investigated more accurately by applying fourteen different wind modes plus eight different discharge modes to the model. The numerical model results indicate that the river plume of Arvand is a "surface-advected plume" with a high sensitivity to wind fluctuations. Numerous experiments extracted the mathematical relation between the Plume Area and the River Discharge (PA-RD) within various wind conditions. A surface salinity of 37 psu determined the river plume border. The second step extracted the Arvand River plume (salinity plume) area using remote sensing techniques. The linear relationship between the sea surface salinity in-situ measurements and surface reflectance (SSS-SR) of Landsat TM5 satellite bands was obtained using a regression model at the river mouth in 1992. The surface salinity pattern at the Arvand River mouth was revealed by applying the SSS-SR relation to all of the Landsat pixels. Eventually, in 1992, the river plum (salinity plume) area was extracted, and then by substituting it in the PA-RD relation, the river discharge was estimated at 540 m3.s-1. The present work is the first serious step toward studying the Arvand River discharge. | ||
| کلیدواژه‌ها | ||
| River Discharge؛ FVCOM؛ Landsat TM5؛ Arvand River؛ River Plume؛ Sea Surface Salinity | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 43 |
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