Photos: Where seas die and earthquakes are born - the southern tip of the San Andreas Fault

Scientists say this is where the biggest earthquake in modern history will be born

David McNew, Getty Images for Lumix

Updated 7:39 am CDT, Wednesday, August 7, 2019

Scientists believe that the southern portion of the San Andreas Fault will inevitably give birth to a massive earthquake, bigger than any that has occurred in Southern California in modern history.

On top of the fault lies a rift lake, the Salton Sea, which is the latest in a series of great lakes to form then dry up with the changing course of the Colorado River throughout geologic history.

The changing weight of these lakes is thought to have had a regulating effect by triggering periodic approximately magnitude 7 earthquakes to relieve built up tectonic pressures. That process stalled when the Colorado River was tamed by technology in the early 1900s and pressure is building.

The current Salton Sea, California's biggest lake, formed when an irrigation engineering project accident in 1905 allowed the Colorado River to flood into the Salton Sink and form the body of water that would become more visited than Yosemite Valley in the mid- 20th Century. It also became one of the most important stops for migrating birds in the North America.

Now the increasingly salty water has killed most of the fish that millions of birds, such as white pelicans and eared grebes that make up 80 to 95 percent of the Western populations have relied on.

The sea has spiraled into ecological collapse and is drying up after decades of debate and insufficient action have failed to stop it. The demise of the lake is now accelerating since some water that would normally flow into the sea has been sold to coastal cities.

Source: https://www.mysanantonio.com/business/technology/article/PHOTOS-Where-Seas-Die-And-Earthquakes-Are-Born-14285716.php