In California’s Central Valley, electromagnetic imaging systems are being used to scan the ground below for the best locations to store excess water in times of severe drought. These giant magnets, which are larger than the aircraft carrying them and appear as if they crash landed from another planet, are allowing researchers to see 1,500 feet beneath the surface of the earth with impressive precision. As droughts occur due to factors like reduced rainfall, contaminants, etc., scientists are recognizing the potential to capitalize on years of excess groundwater to prepare for shortages in the future.   

How Does Electromagnetic Scanning Work

There is no science fiction found in this incredible electromagnetic feat, but you may be wondering, how does it work? Measuring the amount of clay and sand found in the soil, a powerful magnet sends electromagnetic signals into the ground, effectively measuring the time delay the signal is received, i.e., the measurement of soil resistance. The data is subsequently turned into a soil classification: sand or clay. This technology allows experts like General Manager of the Tulare Irrigation District, Aaron Fukuda, x-ray-like vision to uncover the best areas to store excess groundwater. In a recent statement, Fukuda notes, “In a big wet year like this (2023), we’re taking that surface water and we’re putting it into the groundwater system so that we can save it for other drought years. We can pump it out and use it later on.”    The process begins with a carefully mapped radius where this magnetic marvel will scan and send data back to a central hub for analysis. Once the data is read and interpreted, experts define the sandy areas (sand pockets under the surface) prime for the state’s groundwater recharge efforts to store excess water. Simply put, these groundwater systems are serving as reservoirs for safe and clean storage until consumption. And while the methods of capturing the ideal locations for storing groundwater are critical, even more so is the time restraint to collect this water, as in California’s case, Sierra Nevada rainwater appears and disappears quickly.   

Magnets Are Making The World A Better Place 

From storing groundwater to space exploration, magnets are helping unlock the world around us. If you have an idea big or small, check out our blog for inspiration! We offer an unbelievable selection of magnetic marvels for the science enthusiast, the crafty homemaker, the DIY doer, and more, all in one convenient location! Plus, you can pick up the supplies you need to bring your creations at our user-friendly website. With APEX, your next project is our priority! Contact us with all of your magnetic questions for expert help at the click of a button. Need help with which size magnet to order? Not sure how many magnets you need or what shape will work best? Our magnetic masters can answer these among other critical questions with fast responses you can trust.