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ISSN  2096-3955

CN  10-1502/P

Citation: WeiJia Sun, Liang Zhao, Yong Wei, Li-Yun Fu, 2019: Detection of seismic events on Mars: a lunar perspective, Earth and Planetary Physics, 3, 290-297. doi: 10.26464/epp2019030

2019, 3(4): 290-297. doi: 10.26464/epp2019030


Detection of seismic events on Mars: a lunar perspective


Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China


Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China


State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China


College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China


Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao 266580, China

Corresponding author: WeiJia Sun,

Received Date: 2019-02-25
Web Publishing Date: 2019-07-01

The interior structures of planets are attracting more and more detailed attention; these studies could be of great value in improving our understanding of the early evolution of Earth. Seismological investigations of planet interiors rely primarily on seismic waves excited by seismic events. Since tectonic activities are much weaker on other planets, e.g. Mars, the magnitudes of their seismic events are much smaller than those on Earth. It is therefore a challenge to detect seismic events on planets using such conventional techniques as short-time average/long-time average (STA/LTA) triggers. In pursuit of an effective and robust scheme to detect small-magnitude events on Mars in the near future, we have taken Apollo lunar seismic observations as an example of weak-activity data and developed an event-detection scheme. The scheme reported here is actually a two-step processing approach: the first step involves a despike filter to remove large-amplitude impulses arising from large temperature variations; the second step employs a matched filter to unmask the seismic signals from a weak event hidden in the ambient and scattering noise. The proposed scheme has been used successfully to detect a moonquake that was not in the known moonquake catalogue, demonstrating that the two-step strategy is a feasible method for detecting seismic events on planets. Our scheme will provide a powerful tool for seismic data analysis of the Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) mission, and China’s future lunar missions.

Key words: planetary seismology, event detection, interior structures, despike filter, matched filter

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Detection of seismic events on Mars: a lunar perspective

WeiJia Sun, Liang Zhao, Yong Wei, Li-Yun Fu