A lunar day is the time it takes for the Moon to complete one rotation on its axis with respect to the Sun. Due to tidal locking with the Earth, this lunar day is also the time it takes the Moon to...Ahrens, CaitlinNASA Goddard Space Flight Center...
Length of Day (LOD) observations in the range 720 BCE to 2020—derived from lunar occultation and eclipse records—feature a secular trend and various long‐period fluctuations. While recent estimates show that the secular trend is caused by the combination of lunar tidal friction and glacial isos...
The balance of the opposing torques may have long maintained a resonant 21 h day, perhaps for much of the Precambrian. Because the timescale of lunar orbital evolution is not directly affected, a constant daylength would result in fewer days/month. The hypothesis is shown not to conflict ...
the moon requires a correction of 1/9.5 as much to the deduced accumulation for the sun, so that the latter term is very little dependent on the value obtained for the lunar term.
Probably the greatest uncertainty in our LOD model and the potential source of the largest error involves extrapolation of these anelastic effects to the very long periods of the lunar node tide at 18.6 years. The value α=0.09 [Smith and Dahlen, 1981] is somewhat smaller than is generally no...
Also, there aren’t the same amount of days in every month. Some people find it helpful to track their period in relation to the lunar cycle. For people whose cycle is longer or shorter than the moon’s, this isn’t going to line up. If this is you, don’t be discouraged!
A combined length-of-day series spanning 1832–1997: LUNAR97 Universal time (UT) measurements taken by the techniques of lunar occultation, optical astrometry, lunar laser ranging, and very long baseline interferomet... RS Gross - 《Physics of the Earth & Planetary Interiors》 被引量: 80...
The effects of the earth and ocean tides on the semi-diurnal lunar tide in the atmosphere have been ignored in nearly all studies of this air tide. Elementary arguments show that these boundary effects are not trivial. Using linear theor... A Hollingsworth - 《Journal of the Atmospheric Scien...
By Hannah Room 22. As the moon circles the Earth, the shape of the moon appears to change; this is because different amounts of the illuminated part of. The moon moves from east to west across the sky in an arc. Lunar Phases. ...
Incidentally, the date of itself is fixed by an approximation of lunar cycles used in the Hebraic calendar, but according to the historian the name comes from a pagan celebration by the...