Development of performance criteria and functional specifications for a passive seismic experiment on Mars Progress report, 15 ~MAY - 31 ~AUG. 1969
Passive seismic experiment design changes and tests for Viking Mars Program
Anderson, D. L.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Seismic vehicle detection
Passing surface vehicle identification using seismic signal analysis and weight estimation
Gooch, J.↗
Seismicity investigations in the Cascade Mountains and vicinity, Oregon, 1 May 1969 - 30 April 1970
Seismicity in Cascade Mountains and vicinity, Oregon
Blank, H. R., Jr.↗
Missile impacts as sources of seismic energy on the moon
Seismic analysis of lunar module impact and missile-earth impact, comparing recorded signal parameters
Latham, G. V.↗
Seismic refraction profiles of the ash flow in the Valley of Ten Thousand Smokes, Katmai National Monument, Alaska
Seismic refraction profiles of ash flow in Valley of Ten Thousand Smokes, Alaska, obtaining P wave velocities
Forbes, R. B.↗
Explosive seismic sources for the moon
Vacuum effect on explosive coupling seismic energy considered in lunar geophysical experiment
Ahrens, T. J.↗
A time integration method for computation of the intensities of seismic rays
Finite difference time integration method for computing seismic ray intensities
Wesson, R. L.↗
Physical mechanisms of seismic-wave attenuation
Seismic wave attenuation mechanisms emphasizing partial melting, grain boundary relaxation and high temperature internal friction background
Anderson, D. L.↗
An experimental study of thermally induced microfracturing and its relation to volcanic seismicity
Thermoelastic seismic-energy release as source mechanism for volcanic earthquakes, describing thermal microfracture tests
Latham, G. V.↗
Apollo 11 passive seismic experiment
Apollo 11 passive seismic experiment package, discussing design, performance and various received signals
Dorman, J.↗
Apollo 12 seismic signal - Indication of a deep layer of powder
Seismic signal by Apollo 12 lunar module impact indicating deep layer of powder by signal propagation
Gold, T.↗
Active seismic experiment
Active seismic signal analysis from Apollo 14 thumper and mortar detonations on lunar surface
Kovach, R. L.↗
Seismic data from man-made impacts on the moon
Long seismic reverberations from man-made impacts on moon, using Apollo 12 lunar surface station recordings
Dorman, J.↗
Attenuation of seismic waves by grain boundary relaxation
Elastic seismic waves attenuation in polycrystalline ceramics and rocks by grain boundary relaxation, noting strong frequency dependence of earth mantle internal friction
Jackson, D. D.↗
Seismic-wave velocity patterns in some pahoehoe basalt flows
Seismic wave velocity measurements in pahoehoe basalt flows in lava beds, comparing with laboratory dilatational velocities
Greeley, R.↗
Seismic velocity models of the lunar near surface and their implications
Lunar near surface seismic velocity distribution for cold accretion and meteorite impact models, comparing travel times
Watkins, J. S.↗
Apollo 14 active seismic experiment.
Explosion seismic refraction data indicate that the lunar near-surface rocks at the Apollo 14 site consist of a regolith 8.5 meters thick and characterized by a compressional wave velocity of 104 meters per second. The regolith is underlain by a layer with a compressional wave velocity of 299 meters per second. The thickness of this layer, which we interpret to be the Fra Mauro Formation, is between 16 and 76 meters. The layer immediately beneath this has a velocity greater than 370 meters per second. We found no evidence of permafrost.
Watkins, J. S.↗
Development of performance criteria for advanced Viking seismic experiments
The characteristics and requirements of the seismic instrument for mapping the internal structure of the planet Mars are briefly described. The types of signals expected to exist are microseismic background generated by wind and pressure variations and thermal effects, disturbances of or in the landed vehicle, signals caused by faulting and volcanic activity, and signals due to meteoritic impacts. The advanced instrument package should include a short-period vertical component system, a long-period or wide-band 3-component system, a high frequency vertical component system, and a system for detection and rejection of lander noises. The Viking '75, Surveyor, and Apollo systems are briefly described as potential instruments to be considered for modification. Data processing and control systems are also summarized.
Source record↗