On December 27, an unusual natural phenomenon occurred in the Mohangarh area of Jaisalmer, Rajasthan, when a farmer’s attempt to dig a tube well resulted in high-pressure water sprouting from the ground.
Sequence of Events
- After drilling reached a depth of 850 feet, water began flowing with high pressure, increasing rapidly within an hour.
- The pressure was so intense that it trapped a truck and a drilling machine, while flooding 25 bighas of nearby land.
- Along with the water, a small amount of non-inflammable gas was released, and the pressure created a large pit in the area.
Scientific Explanation
A senior hydro-geologist from the Rajasthan State Ground Water Department identified the event as an artesian condition.
What is an Artesian Aquifer?
According to the United States Geological Survey (USGS):
- Definition: An artesian aquifer is water stored under pressure between layers of impermeable rock or sediment deep underground.
- Characteristics:
- The water is confined under pressure by hardy materials (poorly permeable rocks) above and below.
- Drilling or ruptures release this pressure, causing water to flow to the surface naturally, often with force.
- Depth: Artesian water is typically found at much greater depths compared to regular groundwater.
- Historical Origin: The term “artesian” derives from Artois in France (formerly the Roman city of Artesium), where artesian wells were famously drilled in the Middle Ages.
(Source: IE)
