Signs of possible big quakes in California
_https://www.youtube.com/watch?v=kk0ptT01qvc
California's San Andreas Fault is definitely moving
California's San Andreas Fault is definitely moving. Could an earthquake be next?
Scientists have detected definitive movement around the San Andreas Fault system in California. Areas of land surrounding the fault have been shown to be rising and sinking, according to findings reported by the University of Hawaii.
The study published in the journal Nature Geoscience found that parts of California surrounding the San Andreas Fault are symbiotically, if slowly, rising and sinking.
The scientists found that the Los Angeles Basin, Orange County, San Diego County and the Bakersfield area are sinking 2 to 3 millimeters a year. Inversely, Santa Barbara County, San Luis Obispo County, and a large portion of San Bernardino County — an area about 125 miles wide — are rising. According the Los Angeles Times, this range of motion is comparable to the combined widths of several coins.
Scientists and researchers have suspected this kind of tectonic motion for years but have never had the means to monitor it before.
“While the San Andreas GPS data has been publicly available for more than a decade, the vertical component of the measurements had largely been ignored in tectonic investigations because of difficulties in interpreting the noisy data,” Samuel Howell, lead author on the study and a PhD candidate at the University of Hawaii, said in a statement.
“Using this technique, we were able to break down the noisy signals to isolate a simple vertical motion pattern that curiously straddled the San Andreas Fault,” he added.
The capability to measure this kind of motion is groundbreaking and crucial to public safety. This tectonic motion and subsequent stress has the potential to enleash a 7.2 magnitude earthquake.
On the same issue
_https://www.youtube.com/watch?v=P0WTryyhox0
Massive-Scale Movement Detected at the San Andreas Fault
HONOLULU, June 20 (UPI) -- Analysis of GPS data has revealed new areas of motion around the San Andreas Fault System.
Using data collected by the EarthScope Plate Boundary Observatory's GPS array, researchers identified 125-mile-wide "lobes" of uplift and subsidence. Over the last several years, the lobes, which straddle the fault line, have hosted a few millimeters of annual movement.
Computer models simulating the San Andreas Fault System have predicted such crustal movement, but the areas of motion hadn't been physically identified until now.
_https://www.youtube.com/watch?v=gI9bcs5LMUA
Volcanic Magma Movement/So.California
The Large Swarm of Earthquakes in the Southern California linked to Magma Movement Northward along the San Andreas Fault.