Tag Archives: Earthquakes

Chances of 8.0 earthquake in California in next three decades increases

According to scientists from U.S. Geological Survey the chances have jumped from 4.75 to 7% of a major earthquake in California in the next three decades. The reason for this is scientists now understand that earthquakes are not limited to separate faults and they could start with one fault and jump to others. Read more from the article in L.A. Times on March 10, 2015 by Rong-Gong Lin II & Rosanna Xia.
The new forecast from U.S.G.S. was released as part of the publication The Third California Earthquake Rupture Forecast (UCERF3)

Interested in learning more. Here are some books and resources to help you:
1. The million death quake : the science of predicting Earth’s deadliest natural disaster
2. The big shake : implications of a major earthquake in California
3. The great San Francisco earthquake [videorecording]
4. Tectonic geomorphology

Earthquake magnitude

Credit: Nathan Becker, Pacific Tsunami Warning Center / OurAmazingPlanet.com

While we have all heard about earthquake magnitudes and the Richter scale. What does it actually mean and what is the difference between a magnitude 5.0 and 8.0 on the Richter scale. Watch this animation to understand..

Flash vaporization during earthquakes evidenced by gold deposits


Opening of jogs on faults during earthquakes

Dion Weatherley, a seismologist at the University of Queensland in Brisbane along with his co-author Richard Henley published a study in Nature Geoscience recently about the process of flash vaporization along the fault jogs at the time of earthquakes that could result in gold deposits.
What is interesting about this process is even earthquakes of small magnitude could result in big pressure drops along fault jogs resulting in gold-veins instantly.

Read more from the original article at Nature Geoscience

Read a review of the article on Scientific American