#california-seismology

#california-seismology

At his home in Pasadena, high schooler Atticus Jackson frantically shoved his belongings into his car as the sky turned a deep orange. A few hundred feet away, the fire climbed up the mountain and a cloud of red and gray smoke obscured the view.

The first tornado touched down near Biola as an EF-0 at 2:10 p.m and lasted two minutes. The tornado's estimated wind peak was 70 mph, and its path length was 50 yards, while its width was 5 yards.

Scientists used satellite data to study vertical land motion from 2015 to 2023. Findings revealed that regional studies substantially underestimate sea level rise. NASA projects more than double the expected rise by 2050.

The city passed legislation nearly 18 months ago requiring property owners to retrofit their multi-story, wooden-frame buildings with at least three units constructed before 1990. It delayed implementation, however, when the federal government rolled back significant funding to facilitate the repairs. But after a court-granted injunction required the release of some of those federal funds, the city approved a $1.6 million pilot financing program in hopes of rolling out a larger critical life-safety initiative in the future.

An earthquake measuring at a preliminary magnitude of 4.3 shook Sonoma County on Saturday morning around 9:22 a.m., according to the U.S. Geological Survey. The temblor struck about 3.7 miles north-northwest of the Geysers, close to Healdsburg in the North Bay. Originally the quake was measured at a preliminary magnitude of 3.9 but that was revised to a preliminary 4.3 later in the morning by the USGS.

A magnitude 3.4 earthquake rumbled in the South Bay on Tuesday morning, according to the U.S. Geological Survey. The temblor struck at 6:48 a.m. and its epicenter was approximately 15 miles south of San Jose and 5 miles east-northeast of Gilroy. At least two small aftershocks were reported in the area shortly after the initial shaker; those shocks measured magnitude 1.3 and magnitude 1.0 respectively.

The rods are the central element of a novel seismic-responsive structural system that is designed to help the building snap back to its original shape in the event of a major earthquake. Their trick is an embedded cluster of taut cables made from a highly flexible compound called a shape-memory alloy that's capable of bending under tension-like the lateral shaking in a California earthquake-and then straightening out.