Science Daily August 11, 2021 Gas storage oil field operations worldwide are typically not stimulating substantial seismicity. However, the Castor sequence in Spain remains to date the most significant case of seismicity related to this type of industrial operations in Europe. The new analysis by an international team of researchers (Germany, Spain, Italy, Switzerland, USA- Stanford University) identified about 3,500 earthquakes, which took place at shallow depth between September and early October in the vicinity of the Castor injection platform using a combination of advanced seismological techniques applied to an enhanced waveform dataset to better understand the seismogenic process and […]
Category Archives: Earthquakes
Minor volcanic eruptions could ‘cascade’ into global catastrophe
Science Daily August 6, 2021 The typical focus of attention for global-scale catastrophes has been on large-scale eruptions with a volcanic explosivity index (VEI) of 7–8. An international team of researchers (UK, Israel) has identified seven “pinch points” where clusters of relatively small but active volcanoes sit alongside vital infrastructure that, if paralyzed, could have catastrophic global consequences. They include, the volcanic group on the northern tip of Taiwan, the home to one of the largest producers of electronic chips; The Mediterranean, where earthquakes can induce tsunamis that smash submerged cable networks and seal off the Suez Canal; eruptions in […]
Weird Electromagnetic Bursts Appear Before Earthquakes – And We May Finally Know Why
Science Alert May 30, 2021 Seismologists have been aware of brief, subtle anomalies in underground electrical fields leading up to an earthquake, sometimes occurring as soon as a few weeks before the quake happens. Research suggests that when gases interact with newly created crack surfaces, the unpaired electrons within the rock crystal defects are thermally stimulated, released into the crack due to the temperature rise at the crack tip via plastic work, and attached to ambient gas molecules to electrify them in a negative state. Researchers in Japan used a customized lab setup to test the reactions of quartz diorite, […]
Research finds quakes can systematically trigger other ones on opposite side of Earth
Oregon State University August 1, 2018 Researchers at Oregon State University analyzed seismic data from 1973 through 2016, excluding data from aftershock zones, using larger time windows than in previous studies. A tremblor is most likely to induce another quake within 30 degrees of the original quake’s antipode – the point directly opposite it on the other side of the globe. The understanding of the mechanics of how one earthquake could initiate another while being widely separated in distance and time is still largely speculative. But irrespective of the specific mechanics involved, evidence shows that triggering does take place, followed […]