نتایج جستجو برای: karstification

تعداد نتایج: 115  

In this research, the relationship between P-wave velocity (Vp) and Electrical Resistivity (ER) parameters with rock mass quality indices is investigated; parameters such as rock mass quality classification (Q) and modified system for sedimentary rocks, known as Qsrm. For making predictive models, about 1200 data-sets extracted from sections drilled in Seymareh and Karun 2 Dam Sites (SDS and KD...

2004
Elizabeth Screaton Jonathan B. Martin Brian Ginn Lauren Smith

Much of the existing conceptualization of fluid flow in karst aquifers is based on work in extensively cemented and recrystallized Paleozoic and Mesozoic carbonates. Within these aquifers, flow is often primarily through conduits (White 1969, 1977; Smart and Hobbs 1986; Ford and Williams 1989), although diffuse flow may occur through secondary porosity, such as fractures and joints (Shuster and...

2011
Michael Oard

Guyots are flat-topped seamounts. Thousands of guyots, often in chains and clusters, are strewn across the Western Pacific Ocean, especially between the Hawaiian Islands and Japan. The guyots in the Mid-Pacific Mountains are particularly numerous. The tops of the guyots are generally about 1,500 meters below sea level. Guyots present a number of persistent problems within the uniformitarian par...

2014
Faquan Wu Shengwen Qi

This paper explains a procedure for the choice of ballast modules used for the design of direct continuous foundation in karst terrain. The presence of dangerous cavities is introduced in this procedure thereby evaluating risk failure. It also provides pertinent guidelines to direct the geotechnical survey of the terrain. Chimneys: both the low points in the folds as well as the softened clay c...

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...

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