Publications
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Volcano surveillance system based on the Earth Resources Technology satellite
No abstract available.
Authors
David H. Harlow, Peter L. Ward, Jerry P. Eaton, Eliot Endo, Dan Marquez, Rex V. Allen
Earthquake history of Louisiana
No abstract available.
Southeastern U.S. earthquake study begins
No abstract available.
The earthquakes of Ancona
No abstract available.
New computer technique applied to Managua earthquake analysis
No abstract available.
Authors
Carl A. Posey
Remote sensing and photogrammetric studies: Part D: repeatability of elevation measurements--Apollo photography
Stereoscopic photographs of the Moon taken by the metric and panoramic cameras on board the service module of Apollo spacecraft provide a source for quantitative data on lunar topography. The accuracy of the topographic data depends, in part, on the repeatability of elevation measurements. The repeatability depends on contrast in the stereoscopic image and is affected by many factors, such as phot
Authors
Sherman S.C. Wu, Francis J. Schafer, Gary M. Nakata, Raymond Jordan
Remote sensing and photogrammetric studies: Appendix to Part C: effect of photogrammetric reading error on slope-frequency distributions
Lunar slope-frequency distributions obtained by photogrammetric techniques are compared with results from the bistatic-radar investigations of the Apollo 14, 15, and 16 missions (refs. 33-16, 33-17, and 33-32) and of Explorer 35 (ref. 33-27). Algebraic standard deviations of slope-frequency distributions from photogrammetric data are equivalent to rms slopes of slope-frequency distributions from b
Authors
H. J. Moore, Sherman S.C. Wu
Remote sensing and photogrammetric studies: Part C: comparison between photogrammetric and bistatic-radar slope-frequency distributions
Stereoscopic photographs taken by the metric and panoramic cameras can be used to obtain information on the roughness and slope-frequency distributions of lunar surfaces (see appendix to this part). Bistatic radar on board Apollo 14, 15, and 16 spacecraft may also be used to obtain information on lunar surface roughness at two wavelengths—13 cm (S-band) and 116 cm (VHF).
Authors
H. J. Moore, G.L. Tyler
Remote sensing and photogrammetric studies: Part B: calibration of radar data from apollo 17 and other mission results
A large quantity of data on backscattered polarized and depolarized radar echoes from the Moon has been collected from Earth at 3.8-cm wavelength (ref. 33-23). Depolarized echoes are particularly interesting because theory indicates that relatively strong depolarized echoes can be caused by the following factors.
Authors
H. J. Moore, S.H. Zisk