One of the 73 quartz crystals used in the study. They averaged about one millimeter in diameter. Credit: Guilherme Gualda, Vanderbilt University

A microscopic analysis of quartz crystals from an ancient California super-eruption indicates that the process of decompression immediately preceding the eruption began about a year before the eruption itself.

This is a historic photo of the San Francisco earthquake of 1906. Credit: USGS Earth Observatory.

The ruins of San Francisco, still smoldering after the 1906 earthquake, taken from the tower of the Union Ferry Building. Market Street between Sacramento and Third Streets. (Courtesy of the National Archives)

Schematic summary of research findings showing the sequence of slip behavior. Credit: UC Riverside

Better understanding post-earthquake fault movement - Scienmag: Latest Science and Health News

Layout of the network of acoustic transponders (French in red, German in yellow) in the Sea of Marmara, on either side of the submarine segment of the North Anatolian fault (NAF), whose assumed trace is shown by the dashed line. Credit: © J-Y Royer / CNRS-UBO LDO

Earthquake prediction: An innovative technique for monitoring submarine faults

Potential quake zone. Solid red line indicates an area of about 24,000 square miles that could move during a subduction-zone earthquake, affecting 140 million people or more. The dashed line represents a scenario in which the slip might take place along a separate fault. Credit: Chris Small/Lamont-Doherty Earth Observatory

Hidden Fault Could Trigger Cataclysmic Megaquake in Asia - Live Science

Kyoto University researchers show that details about fault dip direction can be extracted from tsunami-borne electromagnetic fields. Such details may contribute to tsunami early warning systems that are more informative for residents of coastal areas. Credit: Eiri Ono/Kyoto University (K-CONNEX)

Could electromagnetic fields be used in tsunami early warning? New research shows that important focal parameters of tsunamigenic earthquakes -- particular

Measurements from satellite radar images of two giant West Texas sinkholes (dark black areas) shows the ground around them is sinking, including indications a much larger potential new sinkhole is developing. The rates of east-west deformation of the ground (cm/year) are indicated in blue (eastward) and red (westward). Credit: Jin-woo Kim, SMU

Satellite radar images reveal ground movement of infamous sinkholes near Wink, Texas; suggest the two existing holes are expanding, and new ones are forming