Phys.org October 25, 2023 An international team of researchers (USA – UT Austin, Pennsylvania State University, University of Nevada, Italy) measured waveform similarity and pairwise differential travel-times (DTT) between acoustic emission (AEs) throughout the seismic cycle. AEs broadcasted prior to slow labquakes had small DTT and high waveform similarity relative to fast labquakes. They showed that during slow stick-slip, the fault never fully locked, and waveform similarity and pairwise differential travel times did not evolve throughout the seismic cycle. In contrast, fast laboratory earthquakes were preceded by a rapid increase in waveform similarity late in the seismic cycle and a […]
Tag Archives: Earthquake
Balloon fleet senses earthquakes from stratosphere
Phys.org July 28, 2022 Note: This article has been accepted for publication and undergone full peer review but has not been through the copyediting… The ground movements induced by seismic waves create acoustic waves propagating upward in the atmosphere, providing a practical solution to perform remote sensing of planetary interiors. However, a terrestrial demonstration of a seismic network based on balloon-carried pressure sensors has not been provided. Researchers in France reported the detection of a large, distant earthquake in a network of balloon-bound pressure sensors in the stratosphere. They demonstrated that quakes properties and planet internal structure can be probed […]