Aquifer - Wikipedia
An aquifer is an underground layer of water -bearing material, consisting of permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of …
Aquifer | Types & Facts | Britannica
6 天之前 · Aquifer, in hydrology, rock layer that contains water and releases it in appreciable amounts. The rock contains water-filled pore spaces, and, when the spaces are connected, the water is able to flow through the matrix of the rock. Wells drilled into aquifers are important sources of fresh water.
Aquifers - Education | National Geographic Society
2023年10月19日 · An aquifer is a body of porous rock or sediment saturated with groundwater. Groundwater enters an aquifer as precipitation seeps through the soil. It can move through the aquifer and resurface through springs and wells.
Aquifers and Groundwater | U.S. Geological Survey - USGS.gov
2019年10月16日 · When a water-bearing rock readily transmits water to wells and springs, it is called an aquifer. Wells can be drilled into the aquifers and water can be pumped out. Precipitation eventually adds water (recharge) into the porous rock of the aquifer.
Aquifers: Where are They Found, Types of Aquifers and How Do …
Aquifers are bodies of well-saturated rocks that make way for the easy movement of water. So, when a saturated rock transmits its water to a well or spring, one can define it as an aquifer.
14.1: Groundwater and Aquifers - Geosciences LibreTexts
2024年4月24日 · An aquifer is defined as a body of rock or unconsolidated sediment that has sufficient permeability to allow water to flow through it. Unconsolidated materials like gravel, sand, and even silt make relatively good aquifers, as do rocks like sandstone.
Aquifer - Explanation, Types, Importance and Facts - Vedantu
An aquifer is an underground layer of porous rocks or permeable rocks that store and retain groundwater levels in the soil. The underground aquifer is built with all types of porous or permeable rock materials, such as sand, gravel, or silt, making it a suitable water absorber.
What is an Aquifer? - Idaho State University
What is an Aquifer? An aquifer is a body of saturated rock through which water can easily move. Aquifers must be both permeable and porous and include such rock types as sandstone, conglomerate, fractured limestone and unconsolidated sand and gravel. Fractured volcanic rocks such as columnar basalts also make good aquifers.
Water Tables and Aquifers - Education
2024年4月26日 · Aquifers are used to extract water for people, plants and every organism living on Earth's surface. Some water tables are dropping very quickly, as people drain aquifers for industry, agriculture, and private use. Scientists call this process "aquifer depletion."
What Is An Aquifer? - WorldAtlas
2018年1月24日 · An aquifer is not an underground river, but a porous layer of rocks. Aquifers vary in depth and the ones closer to the top layer, which is mostly used for irrigation and water supplies, are topped up by rainwater. Some aquifers are overexploited by locals like the aquifers along the coastline of countries like Israel and Libya.