42,161 to 42,170 of 42,342 Results
Jan 1, 1993
Jaffe, L. D., 1993, "Dust Clouds Produced by Landings on Airless Bodies", https://hdl.handle.net/2014/35484, Icarus, JPL Open Repository
Dust clouds can be produced by landings on airless planetary bodies, as well as on bodies with significant atmospheres. |
Jan 1, 1993
Gawronski, W.; Mellstrom, J. A., 1993, "Beam-Waveguide Antenna Servo Design Issues for Tracking Low-Earth-Orbiting Satellites", https://hdl.handle.net/2014/35768, Journal of Guidance, Control and Dynamics, JPL Open Repository
The upcoming NASA missions will require tracking of low-orbit satellites. As a consequence, NASA antennas will be required to track satellites at higher rates than for the current deep space missions. This paper investigates servo design issues for the 34-m beam-waveguide (BWG) a... |
Jan 1, 1993
Srivastava, K.; Tsurutani, B., 1993, "Particle Interactions With Obliquely Propagating Magnetosonic Waves: Energization and/or Trapping", https://hdl.handle.net/2014/35645, UNKNOWN, JPL Open Repository
Four cases of nonlinear obliquely propagating MS waves are considered using a test particle approach: i) monochromatic waves propagating both sunward and anti-sunward, ii) monochromatic waves propagating unidirectionally towards the Sun, iii) a broad band spectrum, propagating bo... |
Jan 1, 1993
Abrams, M.; Toon, G.; Schindler, R., 1993, "A Practical Example of the Correction of Fourier Transform Spectra for Detector Nonlinearity", https://hdl.handle.net/2014/35721, Applied Optics, JPL Open Repository
HgCdTe photoconductive detectors can display a nonlinear response when illuminated. |
Jan 1, 1993
Glazman, Roman E., 1993, "A Cascade Model of Wave Turbulence with Applications to Surface Gravity and Capillary Waves", https://hdl.handle.net/2014/35822, Fractals, JPL Open Repository
A heuristic approach to the derivation of power spectra of wave motion is described and applied to capillary waves. The case of gravity waves studied earlier is briefly reviewed. In contract to the previous studies, the nonlinearity of the wave motion is not required to be small,... |
Jan 1, 1993
Marcus, S. L.; Ghil, M.; Dickey, J. O., 1993, "The Extratropical 40-Day Oscillation in the UCLA General Circulation Model, Part I: Atmospheric Angular Momentum", https://hdl.handle.net/2014/35883, UNKNOWN, JPL Open Repository
Fluctuations in stmospheric angular momentum (AAM) are examined in a three-year simulation of the perpetual-January climate, performed with of a version of the UCLA general circulation model which contains no tropical, Madden-Julian oscillation (MJO). |
Jan 1, 1993
Anderson, M., 1993, "Nested Fullerenes on Graphite", https://hdl.handle.net/2014/36312, Nature, JPL Open Repository
A novel method of forming nested fullerenes by irradiation of carbon soot using the high energy beam in a 300-kV electron microscope. |
Jan 1, 1993
Nelson, G. A.; Schubert, W. W.; Kazarians, G. A.; Richards, G. F.; Benton, E. V.; Benton, E. R.; Henke, R. P., 1993, "Genetic and Molecular Dosimetry of Hze Radiation", https://hdl.handle.net/2014/36347, UNKNOWN, JPL Open Repository
One of the unavoidable risks of spaceflight is exposure to the complex space radiation enviroment which can result in a 50-fold increase in exposure relative to like at the surface of the earth. |
Jan 1, 1993
Sekanina, Zdenek, 1993, "Nongravitational Motions of Comets: Component of the Recoil Force Normal to Orbital Plane", https://hdl.handle.net/2014/36706, UNKNOWN, JPL Open Repository
The significance and detectability of a normal component of the nogravitational acceleration that perturbs the motions of periodic comets are examined by comparing the total perturbation effect, calculated from the component's empirical term in the equations of motion intergrated... |
Jan 1, 1993
Kahn, R.; Wenkert, D., 1993, "The Earth Observing System", https://hdl.handle.net/2014/34975, The Van Nostrand Reinhold Encyclopedia of Planetary Sciences, JPL Open Repository
The idea that the climate of Earth has changed is not new. Much evidence has been collected from the sedimentary record indicating periodic as well as secular changes in climate parameters such as surface temperature, precipitation amount, and ice extent and abundance, on many ti... |