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The Salton Sea is a shallow, landlocked, highly saline endorheic lake in Riverside and Imperial counties in Southern California. It lies on the San Andreas Fault within the Salton Trough, which stretches to the Gulf of California in Mexico. The lake is about 15 by 35 miles (24 by 56 km) at its widest and longest.
The drought of earthquakes on the San Andreas fault will not last. A drying Salton Sea may be helping delay the next Big One, but that could result in a more powerful quake when it does strike ...
A 2023 study found a link between the water level in Lake Cahuilla (now the Salton Sea) and seismic activity along the southern San Andreas Fault. The study suggests that major earthquakes along this section of the fault coincided with high water levels in the lake.
The Brawley Seismic Zone represents the northernmost extension of the spreading center axis associated with the East Pacific Rise which runs up the axis of the Gulf of California and is in the process of rifting the Baja California peninsula away from the mainland of Mexico, with significant subsidence taking place at southern California's Salton Sea and at Laguna Salada in Baja California.
What now remains is the vestigial Salton Sea after the draining of the lake. The researchers think the lake emptying and finally disappearing may have led the fault to stabilise.
According to their paper—published on Wednesday in the journal Nature—the low water levels of the Salton Sea, located at the most southern end of the San Andreas Fault, could explain why this ...
It has formed between various branches of the San Andreas Fault [4] and the San Jacinto Fault [33] (which are connected by the Brawley Seismic Zone) [34] The Salton Trough is still actively subsiding at rates of 3 mm/a (0.12 in/year), increasing to 4–8 mm/a (0.16–0.31 in/year) in the central area of the Trough. [35]
The GCRZ and the San Andreas Fault both terminate near the south end of the Salton Sea, in an area called the Brawley Seismic Zone. The Brawley Seismic Zone is an active spreading center that connects the San Andreas Fault system with the Imperial Fault Zone to the south. [9]