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The Search for Active Marsquakes Using Subpixel Coregistration and Correlation: Best Practice and First Results

Grindrod, Peter M. and Hollingsworth, James and Ayoub, François and Hunt, Simon A. (2018) The Search for Active Marsquakes Using Subpixel Coregistration and Correlation: Best Practice and First Results. Journal of Geophysical Research. Planets, 123 (7). pp. 1881-1900. ISSN 2169-9097. doi:10.1029/2018JE005649.

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The state of seismic activity on Mars is currently unknown. On Earth, coseismic displacement has been observed using visible wavelength images and subpixel coregistration and correlation techniques. We apply this method to Mars with the COSI‐Corr (Co‐registration of Optically Sensed Images and Correlation) software package using High‐Resolution Imaging Science Experiment (HiRISE) images, focusing on part of the Cerberus Fossae fault system. We derive best practices for applying this method to the study of coseismic displacements on Mars. Using a time series of eight overlapping HiRISE images, we achieve pixel coregistration with a mean accuracy of about 1/50 of a pixel. We see no clear evidence for coseismic displacement in this region during a time period of over 8 years. One possible displacement signal (1–2 m of west‐east displacement over a length scale of about 50 m) that has similarities to terrestrial coseismic deformation was dismissed as the result of incomplete correction of steep topography during the coregistration stage. Ancillary observations of recurring slope lineae (RSL) activity in the surrounding fault system offer no supporting evidence for the occurrence of coseismic displacement but do seem to suggest RSL activity that does not fit into previous seasonal timescales. Although it is unlikely that we have observed coseismic displacement in our study area during this time period, the best practice method and the accuracy of our results offer encouragement for future studies. HiRISE, Context Camera, and Color and Stereo Surface Imaging System images can be used to complement and independently verify in situ seismic observations by the InSight (Interior Exploration using Seismic Investigations, Geodesy, and Heat Transport) lander or source location changes from the ExoMars Trace Gas Orbiter spacecraft.

Item Type:Article
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URLURL TypeDescription
Grindrod, Peter M.0000-0002-0934-5131
Hollingsworth, James0000-0003-0122-296X
Ayoub, François0000-0002-7389-8400
Hunt, Simon A.0000-0003-3817-8835
Additional Information:© 2018 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Received 19 APR 2018; Accepted 1 JUN 2018; Accepted article online 10 JUN 2018; Published online 26 JUL 2018. The standard data used in this study are available at the NASA PDS Imaging Node, Mars Reconnaissance Orbiter Online Data Volumes (https://pds‐, the stereo DTM at Figshare (doi: 10.6084/m9.figshare.6384035), and all HiPRECISION image data at Figshare (doi: 10.6084/m9.figshare.6383834). P.M.G. was supported by the UK Space Agency (grants ST/J002127/1, ST/J005215/1, ST/L00254X/1, and ST/R002355/1). S.H. was supported by NERC (grants NE/L006898/1 and NE/P017525/1). The stereo DTM processing was carried out at the Natural History Museum, London. This work has benefited from discussions with Pieter Vermeesch, Joel Davis, Gerald Roberts, and Matt Balme. We thank Sarah Sutton, Audrie Fennema, and the HiRISE team for the production of HiPRECISION data products. We also thank the United States Geological Survey Astrogeology Mapping, Remote‐sensing, Cartography, Technology, and Research (MRCTR) Geographical Information System Lab for ongoing support with producing stereo DTMs. We thank Kirby Runyon and an anonymous reviewer for helpful comments that improved the quality of this paper.
Group:Seismological Laboratory
Funding AgencyGrant Number
United Kingdom Space Agency (UKSA)ST/J002127/1
United Kingdom Space Agency (UKSA)ST/J005215/1
United Kingdom Space Agency (UKSA)ST/L00254X/1
United Kingdom Space Agency (UKSA)ST/R002355/1
Natural Environment Research Council (NERC)NE/L006898/1
Natural Environment Research Council (NERC)NE/P017525/1
Subject Keywords:Mars; seismic; correlation; fault
Issue or Number:7
Record Number:CaltechAUTHORS:20181011-123536528
Persistent URL:
Official Citation:Grindrod, P. M., Hollingsworth, J., Ayoub, F., & Hunt, S. A. (2018). The search for active marsquakes using subpixel coregistration and correlation: Best practice and first results. Journal of Geophysical Research: Planets, 123, 1881–1900.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90247
Deposited By: Tony Diaz
Deposited On:11 Oct 2018 20:13
Last Modified:16 Nov 2021 03:30

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