بسط منحنی‌های هاف برای چهار ایستگاه واقع در حوضه رودخانه کارون بزرگ در استان خوزستان

نوع مقاله : مقاله کامل پژوهشی

نویسندگان

1 گروه مهندسی آب، دانشکده کشاورزی، دانشگاه تبریز

2 گروه مهندسی آب دانشکده کشاورزی، دانشگاه تبریز

چکیده

در این مطالعه، تغییرات الگوی توزیع عمق بارش در طول مدت دوام بارش در چهار ایستگاه حوضه رودخانه کارون بزرگ در استان خوزستان بررسی شده است. برای رسم منحنی‌های هاف از داده‌های باران‌نگار ثبات در ایستگاه‌های سد دز، گتوند، عبدالخان و اهواز استفاده شده است. برای این منظور، کلیه رگبارهای ثبت شده در هر ایستگاه، در فصول مختلف در پنج کلاس به ­شرح 0 تا 2، 2 تا 6، 6 تا 12، 12 تا 24 و بیش از 24 ساعت، دسته‌بندی گردید. افزون بر این، برای هر دسته، در هر فصل، منحنی‌های هاف (Huff) با استفاده از تجمیع رگبارها رسم گردید. همچنین، رویدادهای کلیه دسته‌ها در یک فصل مشخص در یک گروه کلی ادغام و منحنی هاف فصلی رسم گردید. ضمناً برای هر ایستگاه، همه رویدادهای ثبت شده در یک کلاس جمع‌بندی و منحنی هاف کلی به­ دست آمد. در ادامه برای هر منحنی هاف، هیتوگراف رگبار (Storm Hyetograph) طرح با احتمال 50% استخراج شد. این منحنی‌ها می‌تواند در مدیریت منابع آب منطقه از جمله جمع‌آوری آب باران در فصول مختلف و دفع صحیح سیلاب‌های شدید از طریق محاسبه صحیح دبی اوج و ابعاد زهکش‌های سطحی با توجه به منحنی‌های مذکور مفید واقع شود.

کلیدواژه‌ها


عنوان مقاله [English]

Derivation of Huff Curves for the Four Stations in Great Karun River in Khuzestan Province S

نویسندگان [English]

  • Yagob Dinpashoh 1
  • Esmatolsadat Alavi 2
1 Faculty of Agriculture, University of Tabriz, Tabriz 5166614766, Iran
2 Faculty of Agriculture, University of Tabriz, Tabriz 5166614766, Iran
چکیده [English]

The first step in scientific water resources management is good understanding of the temporal precipitation pattern. One of the main tools in understanding the rainfall pattern is plotting the Huff curves. This is true especially in arid and semi-arid regions encountered with water shortages. These help decision makers in understanding temporal characteristics of rainfall, which in turn can help efficient management of water resources. Temporal distribution of rainfalls interested by many investigators in the field of hydrology such as Yen and chow (1980), Loukas and Quick (1994), Todisco (2014), Huff (1967 & 1990) and many others. Furthermore, illustration of Huff curves for different rain gauge stations performed by many researchers such as Azli and Rao (2010), Awadallah and Younan (2012), Yazdi et al. (2016), Shokri-koochak et el. (2011), and many others. In a recently published work by Ewea et al. (2016) the Huff curves were plotted for the city of Makkah Al-Mukkaramah in Saudi Arabia. Based on our best knowledge, there is no comprehensive scientific work carried out on illustration of Huff curves in Great Karun River basin, located in south west of Iran. Therefore, the main objective of this study is illustration of Huff curves and analysis of storm pattern during the rainfall occurrence in the four selected stations, including the Dez dam, Abdul-Khan, Gotvand and Ahwaz. These selected stations are located in Karun River basin, Khuzestan province, Iran.

کلیدواژه‌ها [English]

  • Design storm
  • Temporal distribution of rainfall
  • Design flood
  • Huff curve
  • Hyetograph
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