Density structure of the upper thermosphere of Mars from measurements of air drag on the Mars Global Surveyor spacecraft G. Lemoine (2001), Density structure of the upper thermosphere of Mars from measurements of air drag on the Mars Global Surveyor spacecraft, J. Geophys... PW Tracadas,MT ...
Density structure of the upper thermosphere of Mars from measurements of air drag on the Mars Global Surveyor spacecraft - Tracadas, Zuber, et al. - 2001 () Citation Context ...ve the surface, the density of the atmosphere varied between 0.018 and 0.025 kg/km 3 . Fig. 7 Measured ...
Fossil raindrops and ancient air: an analysis of fossil imprints of ancient raindrops suggests that the density of the atmosphere 2.7 billion years ago was much the same as that today. This result casts fresh light on a long-standing... WILLIAM S. CASSATA,PAUL R. RENNE - 《Nature》 被引...
UPPER LIMITS ON DENSITY OF DARK MATTER IN SOLAR SYSTEM The analysis of the observational data for the secular perihelion precession of Mercury, Earth, and Mars, based on the EPM2004 ephemerides, results in new ... EV Pitjeva,IB Khriplovich - 《International Journal of Modern Physics D》 被...
The ISS orbits 220 miles above the Earth and needs quite a bit of power to support life and power all ISS systems such as light, breathable air, experiments, and so much more for the astronauts and mission specialists. Thus, power density becomes crucial ...
It's not news that there was once water on Mars. In fact, there still is, as Mars is one of theplanets with polar ice caps, which are largely composed of frozen water. However, it has long been believed that liquid water vanished from Mars at least two billion years ago. A recent ...
•A semi-empirical correlation for the frost density is put forward.•The theoretical analysis shows the frost porosity obeys the t scale.•The frost density model depends on the time and also on the modified Jakob number.•The model is able to predict the experimental data with errors ...
Changes in air density will reportedly cause changes in the aerodynamic forces acting on the plane thus affecting its performance. It also explores the factors that affect air density which are altitude, temperature, and humidity.关键词:Aeronautics Airplanes Atmospheric density Meteorology Takeoff ...
The ocean's contribution to interannual variations in length of day (lod) is investigated by means of the global Hamburg large-scale ocean circulation model (LSG) forced with observed wind stress and air temperature fields. The horizonta... J Segschneider,J Sündermann - 《Journal of Physical ...
Focused synthetic-aperture processing is used to increase the coherent gain of the returned signals and narrow their along-track resolution to 300–500 m [Seu et al., 2007]. SHARAD echoes also contain information on the roughness and dielectric properties of Mars, the range between the space...