Earthquakes make waves in the ionosphere—another signal to study
In order to extract as much information as possible from ionospheric signals, we need to understand the patterns in great detail. A recent paper used the 2016 magnitude 7.8 Kaikoura earthquake to see what we could learn from testing the data against simulations.
Strainmeters and GNSS stations reveal subtle fault movements after the 2019 Ridgecrest earthquake
When we experience a significant earthquake—along with any foreshocks or aftershocks associated with it—the shaking is hard to ignore. But there are also subtle movements afterward we may only notice with the help of precision instruments.
Seismologists use earthquake doublets to see how inner core flips its motion
A set of studies explores questions pertaining to the rotation of the inner core relative to Earth’s mantle.
A series of unfortunate events: climate change causes remote landslide, tsunami, and seiche
In East Greenland, a mysterious tsunami hit a military base on a remote island tucked into the fjords. At the same time, seismologists noticed a weird signal on seismic stations located around the world.
Scientists explore past eruptions—and periods of quiet—at Mount St. Helens
When seismic sensors aren’t detecting earthquakes, they’re picking up other vibrations—even shakes too subtle for people to feel. This ambient seismic noise might be able to tell scientists what’s happening at Mount St. Helens during times of activity and purported respite.
InSight data may have revealed water deep below the surface of Mars
A new paper using InSight data presents a noteworthy conclusion—seismic velocity data is best explained by the presence of liquid water.
The Rainier volcanic hazards detection system has been growing
Over the past few years, the Rainier Lahar Detection System has been upgraded with 25 new stations to better detect volcanic hazards on the mountain.
Sea level rise projections depend on improved bedrock models
A new study uses the latest maps of the structure beneath Antarctica to see how important realistic crust and mantle information is to sea level rise. The answer? It’s pretty important.
Mars’ Crater Impact Rate Gets an Update with the Help of Seismic Data
InSight has advanced our understanding of the Martian interior by using seismic techniques typically applied on Earth. One instrument, the Seismic Experiment for Interior Structure (SEIS) returned data that shows marsquakes from recent impacts of space debris on the surface. Compared to the orbitally-imaged catalog of craters, the seismically-detected events don’t seem to entirely match.
New method to auto-detect earthquakes tested at Mammoth Mountain
Researchers in a new paper utilized a seismic array around Mammoth Mountain to test out a new automated detection workflow to see if they could reliably identify the precursors to volcanic activity.