نتایج جستجو برای: Karst zones in SabzKoh

تعداد نتایج: 16981664  

ژورنال: فیزیک زمین و فضا 2014
A Afshar GH Norouzi M Abedi V Ardestani, E

This paper describes the application of the so-called normalized standard deviation (NSTD) method to detect edges of gravity anomalies. Using derivative-based methods enhances the anomaly edges, leading to significant improvement of the interpretation of the geological features. There are many methods for enhancing the edges, most of which are high-pass filters based on the horizontal or vertic...

1999
N. Doerfliger P. - Y. Jeannin F. Zwahlen

Groundwater resources from karst aquifers play a major role in the water supply in karst areas in the world, such as in Switzerland. Defining groundwater protection zones in karst environment is frequently not founded on a solid hydrogeological basis. Protection zones are often inadequate and as a result they may be ineffective. In order to improve this situation, the Federal Office for Environ...

2006
Yonghong Hao Tian-Chyi J. Yeh Caihong Hu Yanrong Wang Xia Li

Karst regions, occupy approximately 25% of the land surface of the earth. Karst aquifers are often major sources of water supply in these areas. However, karst aquifers are generally considered to be particularly vulnerable to pollution and anthropogenic impacts. Large withdrawals of water in karst areas for municipal, agricultural, and industrial use may competitively affect water supply in su...

Karstic zones play an important role in feeding the karstic aquifers؛ therefore, recognizing the factors affecting the karst mutation and its zonation in the field of studies concerned with karst water resources is of great concern. The results of these studies can be applied to quantitative and qualitative management and protection of these resources against the pollutions coming from human ac...

Journal: :international journal of geo science and environmental planning 0
raha bahtooei master of landscape architecture, tarbiat modarres university mohammad nikkar assistant professor, department of architecture, faculty of art and architecture, shiraz university, shiraz, iran

the study of karst phenomena and its potentials has had always a particular importance in semi-arid zones of iran, specifically due to the lack of water sources. in this paper, we are going to discuss the landscape morphology in karstic areas, and the way we can have an ecological planning approach to it. maharlu karst basin was selected as the case study of karstic area, and kaftarak mount in ...

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...

Vulnerability assessment and mapping of hazard pollution is raised on as an important management strategy to protect the karst. Karstic aquifers in semi-arid regions of the West of Iran with regard to the natural conditions of the region, are susceptible to contamination. Estimation of amount and vulnerability mapping of aquifers in the karst religion of Bistoun- Paraw – Kermanshah plain agains...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی (نوشیروانی) بابل - دانشکده مهندسی مکانیک 1389

due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...

2005
Jacob R. Sheehan William E. Doll David B. Watson Wayne A. Mandell

For three years we have used synthetic and field data to investigate the effectiveness of commercial refraction tomography codes on both simple and complex subsurface velocity structures, with the ultimate goal of determining the suitability of the method for karst problems. The results of these studies indicate that refraction tomography is able to resolve karst features under some conditions....

Ali Mirarabi, Alireza Kavousi, Hamid Kardan Moghadam Saman Javadi

Groundwater vulnerability assessment is of crucial importance for land use/cover management. Some methods have been proposed specifically for the karst hydrogeological settings. Among them, COP and PaPRIKa, as two commonly applied recent methods, were adopted for the resource vulnerability assessment of a humid temperate karst region, north of Iran. Comparison of water bacterial content and dis...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید