نتایج جستجو برای: Karst and alluvial springs

تعداد نتایج: 16830880  

Journal: :caspian journal of environmental sciences 2008
v. gholami m. azodi e. taghvaye salimi

springs are the important water resources, which thier study is necessary in terms of their management and exploitation. in northern iran, the karst springs locate in the central alborz highlands and alluvial springs on the caspian southern coasts.the karst and alluvial springs discharge is variable because of different conditions in terms of aquifer, topography and precipitation .this study ha...

E. Taghvaye Salimi M. Azodi V. Gholami,

Springs are the important water resources, which thier study is necessary in terms of their management and exploitation. In northern Iran, the karst springs locate in the central Alborz highlands and alluvial springs on the Caspian southern coasts.The Karst and alluvial springs discharge is variable because of different conditions in terms of aquifer, topography and precipitation .This study ha...

Journal: :مرتع و آبخیزداری 0
مهرنوش قدیمی دکتری ژئومورفولوژی دانشگاه تهران حسن احمدی استاد گروه آبخیزداری دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران ابراهیم مقیمی استاد دانشکده جغرافیا، دانشگاه تهران منصور جعفربیگلو استادیار دانشکده جغرافیا، دانشگاه تهران

to evaluate the hydrogeochemical characteristics of karst water resources of oshtorankooh, chemistry details of springs has been considered as the most important evacuator of karst resources. this research has been performed to study hydrogeochemical nature of karst springs and their origin with an emphasis on the type of formation.  accordingly, five samples of the water of permanent springs o...

Journal: :پژوهش های جغرافیای طبیعی 0
محمد صدیق قربانی استادیار گروه جغرافیا، دانشگاه پیام نور

introduction in several perspectives including geographical determinism, possibilism, exceptionalism, ecological and other views, it is discussed about understanding how human and the environment interact. human in dealing with different environments, depending on the capabilities of environment and existing tools and techniques, adopt themselves with the nature or interfere in it. karst landsc...

Journal: :اکو هیدرولوژی 0
محمد رحمتی کارشناس ارشد مهندسی آبخیزداری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور حمید رضا مرادی دانشیار دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور حاجی کریمی دانشیار، دانشکدة کشاورزی، دانشگاه ایلام خلیل جلیلی دانشجوی دکتری مهندسی آبخیزداری، دانشکدة منابع طبیعی، دانشگاه تربیت مدرس، نور

abstract one of the importance groundwater resources in kermanshah province is karstic aquifer. this study aimed to investigate the role of development of karstic aquifer in karst springs hydrological properties have been conducted. the studies areas are two karst aquifers include the bistoon-parau and patagh mountain in kermanshah province. in the bistoon-parau region we used of bistoon, berke...

ژورنال: :پژوهشهای جغرافیای طبیعی 2010
مهران مقصودی حاجی کریمی فرشاد صفری ذبیح الله چهارراهی

massif of parav-bistoun covered around 880 square kilometers of the thrust zone of zagros mountains and located in kermanshah province. there are various kinds of karst landforms such as jamas, uvulas', dolines, caves in this mountainous area. these landforms are under the influence of palaeoclimatic conditions. nowadays, current climatic conditions in this area allows for development of karst ...

Journal: :Ground water 2007
Yonghong Hao Tian-Chyi J Yeh Yanrong Wang Ying Zhao

There are approximately 470,000 km(2) of karst aquifers that feed many large springs in North China. Turbulent flow often exists in these karst aquifers, which means that the classical ground water model based on Darcy's law cannot be applied here. Ground water data are rare for these aquifers. As a consequence, it is difficult to quantitatively investigate ground water flow in these karst syst...

حاجی کریمی ذبیح‌الله چهارراهی فرشاد صفری مهران مقصودی,

Massif of Parav-Bistoun covered around 880 square kilometers of the thrust zone of Zagros Mountains and located in Kermanshah province. There are various kinds of karst Landforms such as jamas, uvulas', dolines, caves in this mountainous area. These landforms are under the influence of palaeoclimatic conditions. Nowadays, current climatic conditions in this area allows for development of karst ...

2008
Caihong Hu Yonghong Hao Tian-Chyi J. Yeh Bo Pang Zening Wu

In China, 9Ð5% of the landmass is karst terrain and of that 47,000 km2 is located in semiarid regions. In these regions the karst aquifers feed many large karst springs within basins of thousands of square kilometres. Spring discharges reflect the fluctuation of ground water level and variability of ground water storage in the basins. However, karst aquifers are highly heterogeneous and monitor...

2010
Zoran Stevanović

Southeastern Europe is known worldwide as classic karst terrain. In the Alpine orogenic belt the karstifi ed carbonate rocks are either dominant, as in the Dinarides, or widely distributed, as in the Carpathian-Balkans, Hellenides or Pindes. Concerning karstic groundwater resources, this region is by far the richest in all of Europe. Some areas, such as southern Montenegro, are characterized by...

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