Results 251 to 260 of about 3,725,755 (300)

Lunar Features — Northeast Quadrant

2000
Murchison, a 56 km (35-mile) wide ringed plain, has been almost completely obliterated by erosion. Its west walls seem detached; the east walls are low and also eroded, but fairly bright and easy to make out even in small apertures. Murchison has often been compared to the walled plain Julius Caesar, described in the previous chapter.
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Volcanic features of the nearside equatorial lunar maria

Journal of the Geological Society, 1976
A map is presented of the distribution of volcanic features in the lunar maria between longitudes 50°E. and 100°W, and latitudes 50°N. and S. Flood basaltic flows predominate, and where individual flow units can be identified they may be hundreds of kilometres long.
J. E. GUEST, J.B. MURRAY
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Eclipse calculations of lunar features

Vistas in Astronomy, 1972
Abstract Measurements of the times when lunar features (especially prominent craters) enter and leave the umbra during an eclipse of the Moon are important in evaluating the enlargement of the observed umbra over the size predicted geometrically. It may be useful to prepare prediction times of these crater entrances and exits.
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A feature‐assisted matching algorithm for lunar rover

Aircraft Engineering and Aerospace Technology, 2006
PurposeTo present a stereo matching algorithm which satisfies the need of visual navigation on outdoor natural terrain for lunar rover or other mobile robots.Design/methodology/approachA feature‐assisted matching algorithm is presented to generate dense and accurate disparity map of natural terrain.
Jian Hou, Naiming Qi, Hong Zhang
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Small‐area thorium features on the lunar surface

Journal of Geophysical Research: Planets, 2003
Using an improved understanding of the Lunar Prospector Gamma‐Ray Spectrometer (LP‐GRS) spatial footprint, we have derived a new map of global thorium abundances on the lunar surface. This map has a full‐width, half‐maximum spatial resolution of ∼(80 km)2 and is mapped on the lunar surface using 0.5° × 0.5° pixels.
D. J. Lawrence, R. C. Elphic, W. C. Feldman, T. H. Prettyman, O. Gasnault, S. Maurice   +5 more
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Estimation of Local Lunar Gravity Features

Radio Science, 1970
A quantitative estimate of the gravity features on the near surface of the moon has been obtained by iteratively constructing a mass density model to improve the agreement between actual Doppler tracking data from Lunar‐Orbiter spacecraft and theoretical trajectory predictions.
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Evidence for lunar volcano-tectonic features

Journal of Geophysical Research, 1971
Lunar volcano-tectonic processes, considering primary circular or polygonal surface features ...
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Lunar Impact Features and Processes

Reviews in Mineralogy and Geochemistry, 2023
Osinski, Gordon R., Melosh, H. Jay, Andrews-Hanna, Jeff, Baker, David, Denevi, Brett, Dhingra, Deepak, Ghent, Rebecca, Hayne, Paul O., Hill, Patrick, James, Peter B., Jaret, Steven, Johnson, Brandon, Kenkmann, Thomas, Kring, David A., Mahanti, Prasun, Minton, David, Neish, Catherine D., Neumann, Greg, Plescia, Jeff, Potter, Ross W. K., Richardson, Jim, Silber, Elizabeth A., Soderblom, Jason M., Zanetti, Michael, Zellner, Nicolle   +24 more
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Positions of lunar features from Apollo 8

Journal of Geophysical Research, 1970
From Apollo 8 data, positions were obtained for three lunar far-side features. The positions may be used to improve the accuracy of lunar far-side maps. Based on these positions, the best lunar far-side maps are estimated to be accurate to within 60 km (1σ) in latitude and longitude.
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Large-Scale Features of the Lunar Surface

1969
In the preceding chapter our aim has been to reconstruct an average microstructure of the lunar surface from evidence obtained through diverse channels of information. In what follows, we wish to conclude this discussion — and this entire volume — by a few retrospective considerations concerning the structure of the lunar surface on a larger scale.
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