The geophysical techniques inside a drilled hole include: 1. Electric Logging 2. Radioactive Logging 3. Induction Logging 4. Sonic Logging 5. Fluid Logging 6. Down-Hole Photography. Technique # 1. Electric Logging: A four electrode arrangement is commonly employed in measuring resistivity from bore holes similar to the four electrodes used in surface resistivity method. A […]
Geophysical Techniques inside a Borehole | Geography
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Ground Water Recharge and Its Methods | Geography
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In this article we will discuss about ground water recharge and its methods. Recharge of Ground Water: With the increasing use of ground water for agricultural, municipal and industrial needs, the annual extractions of ground water are far in excess of net average recharge from natural sources. Consequently, ground water is being withdrawn from storage […]
Aquifer: Meaning, Types and Functions | Groundwater | Geology
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In this article we will discuss about:- 1. Meaning of Aquifer 2. Types of Aquifer 3. Aquifer Functions 4. Flow in Aquifer 5. Artesian Aquifer 6. Different Rocks as Aquifers. Meaning of Aquifer: It is defined as a rock mass, layer or formation which is saturated with groundwater and which by virtue of its properties […]