, seismologists and geophysicists at ETH Zurich have been listening to the seismic pings of more than 1,300 marsquakes. Again and again, the researchers registered smaller and larger Mars quakes. A detailed analysis of the quakes’ location and spectral character eventually brought a surprise. With epicenters originating in the vicinity of the Cerberus Fossae — a region consisting of a series of rifts or graben — these quakes tell a new story.
“The darker shade of the dust signifies geological evidence of more recent volcanic activity – perhaps within the past 50,000 years — relatively young, in geological terms,” explains Simon Stähler, the lead author of the paper, which has was published on October 27 in the journal. Stähler is a Senior Scientist working in the Seismology and Geodynamics group led by Professor Domenico Giardini at the Institute of Geophysics, ETH Zurich.
One of the fractures that make up the Cerberus Fossae system. The fractures cut through hills and craters, indicating their relative youth. SA/DLR/FU Berlin,One of our nearest terrestrial neighbors, Mars is important for understanding similar geological processes on Earth. The red planet is the only one we know of, so far, that has a core composition of iron, nickel, and sulfur that might have once supported a magnetic field.
Cerberus Fossae in context of its surrounds in the Elysium Planitia region of Mars near the equator. Credit: NASA MGS MOLA Science Team
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