Friday, June 16, 2017

Melt-shakes

Here's something you didn't expect from Sierra snow: Shifting water weight can trigger quakes, UC study says

The Minarets in the central Sierra Nevada after record snows in January. TOM PAINTER / NASA)

NASA

KQED San Francisco & Science Magazine

The importance of Sierra snowpack to California's water supply is legendary. But according to a new study, its impact reaches far below the surface to the state's tectonic foundations. Researchers found a pattern of increased quakes in tandem with shifts in water-related stress, suggesting the loading and unloading of water weight can trigger certain kinds of earthquakes.

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Almost half of SoCal beaches make 'Bummer' list

Los Angeles Times & KPCC Pasadena

Heavy rains last winter poured billions of gallons of polluted runoff into the ocean, significantly increasing health risks at many Southern California beaches, according to Heal the Bay's annual beach report card. Almost half the 85 beaches that Los Angeles County monitored last year earned F grades during the wet winter.

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Sweetwater Authority dedicates new desal plant

KGTV San Diego

A multimillion-dollar expansion means millions of more gallons of clean drinking water for San Diego's South Bay. Thursday, the Sweetwater Authority dedicated the expansion of its Richard A. Reynolds Groundwater Desalination Facility in Chula Vista. The $42 million expansion doubles the plant's output to 10 million gallons of water a day.

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