Dimech, J.-L.

Fassett, C.

Molaro, J.

Phillips, D.

Schmerr, N. C.

Weber, R. C.

NASA Technical Reports Server

Apollo image AS17-147-Geophone 4 partial pan
Frames 22528 to 22532.
Source: NASA
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https://ntrs.nasa.gov/search.jsp?R=20180002144 2019-08-29T17:40:55+00:00Z
Left image: Heffels et al., 2017 “Re-evaluation of Apollo 17 Lunar Seismic Profiling 
Experiment data.” Planetary and Space Science 135, 45-54.
Right image: Sollberger et al., 2016 “The shallow elastic structure of the lunar crust: 
New insights from seismic wavefield gradient analysis” Geophysical Research Letters 
43, 10,078–10,087.
Fair use
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Author-generated images. 
Notes: What do we know about them from previous work?
• Observed on all Apollo seismic experiments
• Occur periodically according to diurnal sunrise/sunset cycle
• Have predictable amplitudes and waveforms
• Original event detection performed only on small portion of data 
• Original event classification performed by eye
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Author generated
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Images from Duennebier 1976, Proc. Lunar Sci. Conf. 7th, p. 1073-1086  “Thermal 
Movement of the Regolith”
Fair use
Apollo PanCam image AS 17-2309. Source: NASA
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LROC image. Source: NASA
Click image: Image from Duennebier 1976, Proc. Lunar Sci. Conf. 7th, p. 1073-1086  
“Thermal Movement of the Regolith” overlaid on LROC image. Source: NASA
Fair use
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Author-generated
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Author-generated
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Author-generated
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image: LROC imagery (source: NASA) with author generated points and contours
Rocks mapped by Haase et al. (2012) “Mapping the Apollo 17 landing site area based 
on Lunar Reconnaissance Orbiter Camera images and Apollo surface photography”. 
Journal of Geophysical Research Vol. 117. Fair use
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Author-generated
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Left: Figure from Molaro et al., 2017 (Icarus) “Thermally induced stresses in boulders 
on airless body surfaces, and implications for rock breakdown” Volume 294, Pages 
247-261. Fair use
Right: author-generated
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Author-generated
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Author-generated
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Thermal Moonquakes: Implications for Surface Processes

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