نتایج جستجو برای: karst aquifer

تعداد نتایج: 12389  

Journal: :مدیریت مخاطرات محیطی 0
شکور سلطانی دکتری ژئومورفولوژی، وزارت نیرو ایثار نورایی صفت دانشجوی کارشناسی ارشد آموزش محیط زیست، دانشگاه تهران طاهر ولی پور دانشجوی کارشناسی ارشد هیدروژئومورفولوژی، دانشگاه شهید بهشتی عبدالکریم ویسی دانشجوی دکتری ژئومورفولوژی، دانشگاه تهران احمد عباسیان کارشناس ارشد ژئومورفولوژی، دانشگاه تهران

vulnerability and contamination risk assessment is of great importance in karst aquifer management. because of vastness of karst in zagros, natural conditions and human activity within the region of aquifer, pollution emission has become one of the most important challenges in front of zagros aquifers. the purpose of this study is to assess marab aquifer vulnerability, using riske model and, de...

2014
MaryLynn Musgrove Brian G Katz Lynne S Fahlquist Christy A Crandall Richard J Lindgren

Karst aquifers occur in a range of climatic and geologic settings. Nonetheless, they are commonly characterized by their vulnerability to water-quality impairment. Two karst aquifers, the Edwards aquifer in south-central Texas and the Upper Floridan aquifer in western Florida, were investigated to assess factors that control the movement of contaminants to public-supply wells (PSWs). The geoche...

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...

2018
Noam Zach Dvory Alon Ronen Yakov Livshitz Eilon Adar Michael Kuznetsov Alexander Yakirevich

Sustainable groundwater production from karst aquifers is primarily dictated by its recharge rate. Therefore, it is essential to accurately quantify annual groundwater recharge in order to limit overexploitation and to evaluate artificial methods for groundwater enrichment. Infiltration during erratic flood events in karst basins may substantially contribute to aquifer recharge. However, the co...

2016
Bo Liu Reza Malekian Jinpeng Xu

Karst collapse columns, as a potential water passageway for mine water inrush, are always considered a critical problem for the development of deep mining techniques. This study aims to identify the mixing process of groundwater deriving two different limestone karst-fissure aquifer systems. Based on analysis of mining groundwater hydrogeochemical properties, hydraulic connection between the ka...

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...

ژورنال: علوم آب و خاک 2018

To determine the potential for groundwater contamination, vulnerability should be evaluated in different areas susceptible to contamination should be investigated. Aquifer (carbonate) karst or part of it is karst aquifer in the western region of Iran; due to the natural conditions of the region and human activities, they are susceptible to contamination by carbonate aquifer through holes devour...

2010
Vincent Bailly-Comte Jonathan B. Martin Hervé Jourde Elizabeth J. Screaton Séverin Pistre Abigail Langston

In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Keywords: Karst aquifers Hydrograph recession Matrix–conduit exchange Hydrodynamics Causse d'Aumelas Santa Fe River s u m m ...

2012
Yonghong Hao Jiaojuan Zhao Huamin Li Bibo Cao Zhongtang Li Tian-Chyi J. Yeh

The karst hydrological processes are the response of karst groundwater system to precipitation. This study provided a concept model of karst hydrological processes. The hydraulic response time of spring discharge to precipitation includes the time that precipitation penetrates through the vadose zone, and the subsequent groundwater pressure wave propagates to a spring outlet. Due to heterogenei...

2009
JUSTIN E. BIRDWELL

Most cave and karst ecosystems are believed to be dependent on an influx of allochthonous organic carbon. Although microbes are largely responsible for the fate of dissolved organic matter (DOM) in karst, the role of microbes in chemosynthetic (autochthonous) production and processing of DOM has received limited attention. Chromophoric dissolved organic matter (CDOM) is the fraction of DOM that...

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