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Published August 1977 | Published
Journal Article Open

Seismology on Mars


A three-axis short period seismometer has been operating on the surface of Mars in the Utopia Planitia region since September 4, 1976. During the first five months of operation approx. 640 hours of high quality data, uncontaminated by Lander or wind noise, have been obtained. The detection threshold is estimated to be magnitude 3 to about 200 km and about 6.5 for the planet as a whole. No large events have been seen during this period indicating that Mars is less seismically active than Earth.

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© 1977 American Geophysical Union.

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