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Aquifers are generally the permeable geological formations, in which ground water occurs. Which of the following is a type of Aquifer in which ground water is confined under pressure greater than atmospheric by over-lying, relatively impermeable strata?
- a)Free aquifer
- b)Phreatic aquifer
- c)Artesian aquifers
- d)Non-artesian aquifers
Correct answer is option 'C'. Can you explain this answer?
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Aquifers are generally the permeable geological formations, in which g...
Aquifers are underground layers of rock or sediment that can store and transmit water. They are typically permeable, meaning that water can flow through them. However, there are different types of aquifers depending on the characteristics of the overlying strata and the pressure of the groundwater. One type of aquifer is an artesian aquifer.
**Artesian Aquifers:**
Artesian aquifers are a type of aquifer in which groundwater is confined under pressure greater than atmospheric pressure by overlying, relatively impermeable strata. These aquifers are often found in areas where there is a layer of impermeable rock or clay above the aquifer, which acts as a barrier to the upward movement of groundwater. This confinement creates pressure within the aquifer, causing the water to flow to the surface when a well is drilled into the aquifer.
**Characteristics of Artesian Aquifers:**
- Confined Aquifer: Artesian aquifers are confined aquifers, meaning that they are surrounded by impermeable strata that prevent the water from escaping to the surface or being recharged by surface water sources.
- Pressure: The water in artesian aquifers is under pressure, which is greater than atmospheric pressure. This pressure is caused by the weight of the overlying impermeable strata, which forces the water to be compressed and stored within the aquifer.
- Natural Flow: When a well is drilled into an artesian aquifer, the pressure causes the water to flow naturally to the surface without the need for pumping. This can create flowing artesian wells, where the water rises above the ground level.
- Sustainable Water Source: Artesian aquifers can provide a sustainable source of water as long as the recharge rate from precipitation is sufficient to replenish the extracted water. However, over-pumping can deplete the aquifer and lead to subsidence or the intrusion of saltwater.
In summary, artesian aquifers are a type of aquifer where groundwater is confined under pressure by impermeable strata. They provide a natural flow of water when a well is drilled into them, making them a valuable source of water in certain regions.
**Artesian Aquifers:**
Artesian aquifers are a type of aquifer in which groundwater is confined under pressure greater than atmospheric pressure by overlying, relatively impermeable strata. These aquifers are often found in areas where there is a layer of impermeable rock or clay above the aquifer, which acts as a barrier to the upward movement of groundwater. This confinement creates pressure within the aquifer, causing the water to flow to the surface when a well is drilled into the aquifer.
**Characteristics of Artesian Aquifers:**
- Confined Aquifer: Artesian aquifers are confined aquifers, meaning that they are surrounded by impermeable strata that prevent the water from escaping to the surface or being recharged by surface water sources.
- Pressure: The water in artesian aquifers is under pressure, which is greater than atmospheric pressure. This pressure is caused by the weight of the overlying impermeable strata, which forces the water to be compressed and stored within the aquifer.
- Natural Flow: When a well is drilled into an artesian aquifer, the pressure causes the water to flow naturally to the surface without the need for pumping. This can create flowing artesian wells, where the water rises above the ground level.
- Sustainable Water Source: Artesian aquifers can provide a sustainable source of water as long as the recharge rate from precipitation is sufficient to replenish the extracted water. However, over-pumping can deplete the aquifer and lead to subsidence or the intrusion of saltwater.
In summary, artesian aquifers are a type of aquifer where groundwater is confined under pressure by impermeable strata. They provide a natural flow of water when a well is drilled into them, making them a valuable source of water in certain regions.
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Aquifers are generally the permeable geological formations, in which g...
Aquifer:
- An aquifer is a saturated formation of earth material from which water is yielded in sufficient quantity, due to the high permeability of earth material.
- Unconsolidated deposits of sand and gravel are good for aquifer formation.
- Groundwater is generally extracted from aquifers, so it is of much importance to us.
These are generally of 3 types:
- Unconfined aquifers (Non-artesian aquifers)
- Confined aquifers (Artesian aquifers)
- Perched aquifer
Unconfined aquifer (Non-artesian aquifers):
- When the water table serves as the upper boundary of the aquifer, the aquifer is known as an unconfined aquifer.
- The unconfined aquifer is also known as the water table aquifer and phreatic aquifer.
- An impervious layer is generally served as the bottom boundary of an unconfined aquifer and the top layer is not confined.
Confined aquifer (Artesian aquifers):
- A confined aquifer shall mean groundwater that is confined under pressure greater than atmospheric by overlying, relatively impermeable strata.
- An aquifer that is bounded by two impervious layers at the top and bottom of the aquifer is called a confined aquifer.
- The confined aquifer is also known as a pressure aquifer or artesian aquifer.
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Aquifers are generally the permeable geological formations, in which ground water occurs. Which of the following is a type of Aquifer in which ground water is confined under pressure greater than atmospheric by over-lying, relatively impermeable strata?a)Free aquiferb)Phreatic aquiferc)Artesian aquifersd)Non-artesian aquifersCorrect answer is option 'C'. Can you explain this answer?
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Aquifers are generally the permeable geological formations, in which ground water occurs. Which of the following is a type of Aquifer in which ground water is confined under pressure greater than atmospheric by over-lying, relatively impermeable strata?a)Free aquiferb)Phreatic aquiferc)Artesian aquifersd)Non-artesian aquifersCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Aquifers are generally the permeable geological formations, in which ground water occurs. Which of the following is a type of Aquifer in which ground water is confined under pressure greater than atmospheric by over-lying, relatively impermeable strata?a)Free aquiferb)Phreatic aquiferc)Artesian aquifersd)Non-artesian aquifersCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Aquifers are generally the permeable geological formations, in which ground water occurs. Which of the following is a type of Aquifer in which ground water is confined under pressure greater than atmospheric by over-lying, relatively impermeable strata?a)Free aquiferb)Phreatic aquiferc)Artesian aquifersd)Non-artesian aquifersCorrect answer is option 'C'. Can you explain this answer?.
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