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Journal articles on the topic 'Lunar variations'

Author: Grafiati

Published: 6 September 2023

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1

Winch, Denis E. "Lunar magnetic variations." Pure and Applied Geophysics PAGEOPH 131, no. 3 (1989): 533–49. http://dx.doi.org/10.1007/bf00876844.

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2

Palumbo, A. "Lunar daily variations in rainfall." Journal of Atmospheric and Terrestrial Physics 48, no. 2 (1986): 145–48. http://dx.doi.org/10.1016/0021-9169(86)90078-4.

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3

Winch, D. E. "Solar and Lunar Daily Geomagnetic Variations." Exploration Geophysics 24, no. 2 (1993): 147–50. http://dx.doi.org/10.1071/eg993147.

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4

Edwards, B. C., J. J. Bloch, D. Roussel-Dupré, T. E. Pfafman, and Sean Ryan. "ALEXIS Lunar Observations." International Astronomical Union Colloquium 152 (1996): 465–70. http://dx.doi.org/10.1017/s0252921100036393.

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The ALEXIS small satellite was designed as a large area monitor operating at extreme ultraviolet wavelengths (130 − 190 Å). At these energies, the moon is the brightest object in the night sky and was the first source identified in the ALEXIS data. Due to the design of ALEXIS and the lunar orbit, the moon is observed for two weeks of every month. Since lunar emissions in the extreme ultraviolet are primarily reflected solar radiation these observations may be useful as a solar monitor in the extreme ultraviolet. The data show distinct temporal and spectral variations indicating similar changes

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5

Zaman, Fahad, Lawrence W. Townsend, Wouter C. de Wet, et al. "Composition variations of major lunar elements: Possible impacts on lunar albedo spectra." Icarus 369 (November 2021): 114629. http://dx.doi.org/10.1016/j.icarus.2021.114629.

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6

TRIVEDI, NB, and RG RASTOGI. "Lunar tidal oscillations in horizontal magnetic intensity at Kodaikanal during periods of low and high sunspots." MAUSAM 20, no. 3 (2022): 235–46. http://dx.doi.org/10.54302/mausam.v20i3.5452.

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The paper describes the lunar daily (L) variations at fixed lunar ages and the lunar monthly (M) variations at fixed solar hours in horizontal magnetic intensity (.H) at Kodaikanal for the low sunspot period, Jan, 1951 to Dec, 1955; and for the high sunspot period Jan. 1956 to Dec, 1960. The lunar daily variations at any of the seasons or solar activity epochs are found to follow Chapman's phase law: L=Cn sin [n~+(.n-2)v+an]. With the increase of solar activity the phase of Ls wave remains constant for each of the seasons, but the amplitude increases during D. and E. months and slightly decrea

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7

Pearce, Steven J., and H. J. Melosh. "Terrace width variations in complex lunar craters." Geophysical Research Letters 13, no. 13 (1986): 1419–22. http://dx.doi.org/10.1029/gl013i013p01419.

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8

McKnight, J. D. "Lunar daily geomagnetic variations in New Zealand." Geophysical Journal International 122, no. 3 (1995): 889–98. http://dx.doi.org/10.1111/j.1365-246x.1995.tb06844.x.

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9

Antonov, Yu V. "ABOUT A POSSIBLE CONNECTION BETWEEN EARTHQUAKES AND LUNAR-SOLAR GRAVITY VARIATIONS." Proceedings of higher educational establishments. Geology and Exploration, no. 3 (June 25, 2018): 51–57. http://dx.doi.org/10.32454/0016-7762-2018-3-51-57.

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A possible correlation between the destructive earthquakes of magnitude M = 7 and above and luni-solar gravity variations between 1975 and 2015 has been analyzed. The lunar-solar variations are characterized by three extreme points: the maximum and minimum values of gravity, and the maximum rate of change of variations. At this time, there is an extreme impact of lunar-solar attraction on the earth’s crust and the Earth as a whole. Variations can be a source of irreversible deformation in the earth’s crust. If in this case, there is an additional external impact of space factors, the probabili

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10

McGee, J. J. "Lunar ferroan anorthosites: Mineralogy, compositional variations, and petrogenesis." Journal of Geophysical Research: Planets 98, E5 (1993): 9089–105. http://dx.doi.org/10.1029/93je00400.

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11

Stening, R. J. "What do lunar geomagnetic variations tell us about the lunar tide in the lower thermosphere?" Advances in Space Research 12, no. 6 (1992): 267–70. http://dx.doi.org/10.1016/0273-1177(92)90070-e.

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12

Jin, Da Wei, Jian Qiao Li, Shi Chao Fan, Hao Li, and Yang Wang. "Analysis on the Movement Effect of Lunar Rover Wheel." Applied Mechanics and Materials 307 (February 2013): 211–14. http://dx.doi.org/10.4028/www.scientific.net/amm.307.211.

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It is important to analyze mechanical relationship between lunar wheel and lunar soil for studying passing ability of regolith in lunar soil. Mechanical relationship between lunar wheel and regolith could be reflected by these parameters such as sinkage, drawbar pull, driving torque, motion resistance and slip when the lunar wheel moves. Thus, it is necessary to analyze these parameters of lunar wheel by soil bin test. The test results show that, the four parameters increase with slip and loading, except motion resistance of the test wheel which is under 70N at the speed of 25mm/s. The variati

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13

Sedaghatpour, Fatemeh, and Stein B. Jacobsen. "Magnesium stable isotopes support the lunar magma ocean cumulate remelting model for mare basalts." Proceedings of the National Academy of Sciences 116, no. 1 (2018): 73–78. http://dx.doi.org/10.1073/pnas.1811377115.

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We report high-precision Mg isotopic analyses of different types of lunar samples including two pristine Mg-suite rocks (72415 and 76535), basalts, anorthosites, breccias, mineral separates, and lunar meteorites. The Mg isotopic composition of the dunite 72415 (δ25Mg = −0.140 ± 0.010‰, δ26Mg = −0.291 ± 0.018‰), the most Mg-rich and possibly the oldest lunar sample, may provide the best estimate of the Mg isotopic composition of the bulk silicate Moon (BSM). This δ26Mg value of the Moon is similar to those of the Earth and chondrites and reflects both the relative homogeneity of Mg isotopes in

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14

Starjinsky, S. S. "Studying the dynamics of the lunar daily geomagnetic variations." Geomagnetism and Aeronomy 48, no. 2 (2008): 265–76. http://dx.doi.org/10.1134/s0016793208020175.

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15

Venkatadri, T. K., and P. B. James. "Variations of porosity in intermediate-sized lunar impact basins." Icarus 352 (December 2020): 113953. http://dx.doi.org/10.1016/j.icarus.2020.113953.

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16

Cloutis, Edward A., and Michael J. Gaffey. "Lunar Regolith Analogues: Spectral Reflectance Properties of Compositional Variations." Icarus 102, no. 2 (1993): 203–24. http://dx.doi.org/10.1006/icar.1993.1044.

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17

Jawin, Erica R., Sebastien Besse, Lisa R. Gaddis, Jessica M. Sunshine, James W. Head, and Sara Mazrouei. "Examining spectral variations in localized lunar dark mantle deposits." Journal of Geophysical Research: Planets 120, no. 7 (2015): 1310–31. http://dx.doi.org/10.1002/2014je004759.

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18

Arora, B. R., D. R. K. Rao, and N. S. Sastri. "Geomagnetic solar and lunar daily variations at Alibag, India." Pure and Applied Geophysics PAGEOPH 122, no. 1 (1985): 89–109. http://dx.doi.org/10.1007/bf00879651.

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19

Zhong, Zhen, Jianguo Yan, and Zhiyong Xiao. "Lunar Regolith Temperature Variation in the Rümker Region Based on the Real-Time Illumination." Remote Sensing 12, no. 4 (2020): 731. http://dx.doi.org/10.3390/rs12040731.

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Chang’E-5 will be China’s first sample−return mission. The proposed landing site is at the late-Eratosthenian-aged Rümker region of the lunar nearside. During this mission, a driller will be sunk into the lunar regolith to collect samples from depths up to two meters. This mission provides an ideal opportunity to investigate the lunar regolith temperature variation, which is important to the drilling program. This study focuses on the temperature variation of lunar regolith, especially the subsurface temperature. Such temperature information is crucial to both the engineering needs of the dril

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20

Stening, R. J., and C. Jacobi. "Lunar tidal winds in the upper atmosphere over Collm." Annales Geophysicae 18, no. 12 (2000): 1645–50. http://dx.doi.org/10.1007/s00585-001-1645-6.

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Abstract. The lunar semidiurnal tide in winds measured at around 90 km altitude has been isolated with amplitudes observed up to 4 m s–1. There is a marked amplitude maximum in October and also a considerable phase variation with season. The average variation of phase with height indicated a vertical wavelength of more than 80 km but this, and other results, needs to be viewed in the light of the considerable averaging required to obtain statistical significance. Large year-to-year variations in both amplitude and phase were also found. Some phase comparisons with the GSWM model gave reasonabl

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21

Barkin, M. Yu, P. M. Shkapov, and Hideo Hanada. "The Physical Librations of the Moon Caused by its Tidal Deformation." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 83 (2018): 4–16. http://dx.doi.org/10.18698/1812-3368-2019-2-4-16.

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The Moon, like Earth, is not completely solid, and experiences deformation changes, for example due to the tides, caused by the gravitational pull of the Earth's orbit in a complex and resonant nature of the motion of the Moon. It is shown that these deformations lead to temporary variations of Moon inertia tensor components and consequently to the variations in the movement of the poles of the Moon, as well as to the variations of axial rotation. The indicated variations module is in the order of 10--12 mas (millisecond of arc). There variations are important for the development of the high-p

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22

Fiedler, Jens, and Gerd Baumgarten. "Solar and lunar tides in noctilucent clouds as determined by ground-based lidar." Atmospheric Chemistry and Physics 18, no. 21 (2018): 16051–61. http://dx.doi.org/10.5194/acp-18-16051-2018.

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Abstract. Noctilucent clouds (NLCs) occur during summer from midlatitudes to high latitudes. They consist of nanometer-sized ice particles in an altitude range from 80 to 90 km and are sensitive to ambient temperature and water vapor content, which makes them a suitable tracer for variability on all timescales. The data set acquired by the ALOMAR Rayleigh–Mie–Raman (RMR) lidar covers 21 years and is investigated regarding tidal signatures in NLCs. For the first time solar and lunar tidal parameters in NLCs were determined simultaneously from the same data. Several NLC parameters are subject to

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23

Kravchenko, Yu A. "The lunar influence on the vertical deflections and gravity variations." Geodesy and Cartography 928, no. 10 (2017): 2–9. http://dx.doi.org/10.22389/0016-7126-2017-928-10-2-9.

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The increase of building complexity causes the raise of requirements for accuracy of geodetic observations and the necessity to revise the variety of factors influencing the measurement results. Such factors include the lunar influence on the gravity intensity and direction. The necessity of correcting geodetic observations by the lunar influence and estimation of their highest influence on the Earth gravity and vertical deflections are outlined. The results obtained from the computational experiment on extreme values estimation of vertical deflections (up to 1''), variations of measured heigh

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24

Müller, Jürgen, and Liliane Biskupek. "Variations of the gravitational constant from lunar laser ranging data." Classical and Quantum Gravity 24, no. 17 (2007): 4533–38. http://dx.doi.org/10.1088/0264-9381/24/17/017.

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25

Stening, R. J., and R. G. Rastogi. "Variations of the lunar geomagnetic tide in the Indian region." Journal of Atmospheric and Solar-Terrestrial Physics 64, no. 4 (2002): 471–77. http://dx.doi.org/10.1016/s1364-6826(02)00075-5.

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26

Greber, Nicolas D., Nicolas Dauphas, Igor S. Puchtel, Beda A. Hofmann, and Nicholas T. Arndt. "Titanium stable isotopic variations in chondrites, achondrites and lunar rocks." Geochimica et Cosmochimica Acta 213 (September 2017): 534–52. http://dx.doi.org/10.1016/j.gca.2017.06.033.

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27

López, Ericson, Franklin Aldás, and Akimasa Yoshikawa. "Analysis of Magnetic Field Variations Produced by Equatorial Electro-Jets." Proceedings of the International Astronomical Union 13, S335 (2017): 125–27. http://dx.doi.org/10.1017/s1743921318000662.

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AbstractThe Equatorial Electrojet (EEJ) is a narrow band of electrons flowing from east to west at daytime at low latitudes. The electron current produces a magnetic field variation that can be measured at different latitudes. In this work, we have used the data analysis in order to quantify the solar and lunar contributions to those variations and study the morphology of the EEJ current.

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28

Hapgood, M. "Modelling long-term trends in lunar exposure to the Earth's plasmasheet." Annales Geophysicae 25, no. 9 (2007): 2037–44. http://dx.doi.org/10.5194/angeo-25-2037-2007.

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Abstract. This paper shows how the exposure of the Moon to the Earth's plasmasheet is subject to decadal variations due to lunar precession. The latter is a key property of the Moon's apparent orbit around the Earth – the nodes of that orbit precess around the ecliptic, completing one revolution every 18.6 years. This precession is responsible for a number of astronomical phenomena, e.g. the year to year drift of solar and lunar eclipse periods. It also controls the ecliptic latitude at which the Moon crosses the magnetotail and thus the number and duration of lunar encounters with the plasmas

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29

Sherstyukov, B. G. "Lunar perturbations in variations of earth angular velocity and atmospheric pressure." Russian Meteorology and Hydrology 37, no. 8 (2012): 514–20. http://dx.doi.org/10.3103/s106837391208002x.

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30

Bhuyan, P. K., and T. R. Tyagi. "Lunar and solar daily variations of equivalent slab thickness at Delhi." Geophysical Journal International 88, no. 2 (1987): 487–93. http://dx.doi.org/10.1111/j.1365-246x.1987.tb06655.x.

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31

De Meyer, Frans. "A modulation model for the solar and lunar daily geomagnetic variations." Earth, Planets and Space 55, no. 7 (2003): 405–18. http://dx.doi.org/10.1186/bf03351774.

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32

Çelik, Cengiz, Mustafa Kemal Tunçer, Elif Tolak-Çiftçi, Metin Zobu, Naoto Oshiman, and S. Bülent Tank. "Solar and lunar geomagnetic variations in the northwestern part of Turkey." Geophysical Journal International 189, no. 1 (2012): 391–99. http://dx.doi.org/10.1111/j.1365-246x.2012.05382.x.

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33

Rastogi, R. G., H. Chandra, and G. Sethia. "Solar and lunar variations in TEC at low latitudes in India." Journal of Atmospheric and Terrestrial Physics 47, no. 4 (1985): 309–17. http://dx.doi.org/10.1016/0021-9169(85)90011-x.

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34

Bhuyan, P. K., and T. R. Tyagi. "Lunar and solar daily variations of ionospheric electron content at Delhi." Journal of Atmospheric and Terrestrial Physics 48, no. 3 (1986): 301–10. http://dx.doi.org/10.1016/0021-9169(86)90106-6.

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35

Jansen, J. C., J. C. Andrews-Hanna, Y. Li, et al. "Small-scale density variations in the lunar crust revealed by GRAIL." Icarus 291 (July 2017): 107–23. http://dx.doi.org/10.1016/j.icarus.2017.03.017.

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36

McFadden, James, Ian Garrick-Bethell, Chae K. Sim, Sungsoo S. Kim, and Doug Hemingway. "Iron content determines how space weathering flux variations affect lunar soils." Icarus 333 (November 2019): 323–42. http://dx.doi.org/10.1016/j.icarus.2019.05.033.

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37

Yamazaki, Y., and M. J. Kosch. "Geomagnetic lunar and solar daily variations during the last 100 years." Journal of Geophysical Research: Space Physics 119, no. 8 (2014): 6732–44. http://dx.doi.org/10.1002/2014ja020203.

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38

Scholz, M. "Stellar radii." Symposium - International Astronomical Union 189 (1997): 51–58. http://dx.doi.org/10.1017/s0074180900116493.

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Observing a stellar radius basically means observing a center-to-limb intensity variation. The significance and properties of center-to-limb variations, common approximations, the correlation with optical-depth radii in extended-photophere stars, and direct measurements of angular (interferometry, lunar occultation) and absolute diameters (binary eclipses) are discussed. Spectrophotometric and doppler techniques of diameter determination are also briefly outlined.

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39

NORDTVEDT, KENNETH. "SPACE–TIME VARIATION OF PHYSICAL CONSTANTS AND THE EQUIVALENCE PRINCIPLE." International Journal of Modern Physics A 17, no. 20 (2002): 2711–15. http://dx.doi.org/10.1142/s0217751x02011655.

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Location-dependence of physical parameters such as the electromagnetic fine structure constant and Newton's G produce body accelerations which violate universality of free fall rates testable with laboratory and space experiments. Theoretically related cosmological time variation of these same parameters are also constrained by experiments such as lunar laser ranging, and these time variations produce accelerations of bodies relative to a preferred cosmological inertial frame.

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40

Fujimoto, Akiko, Akimasa Yoshikawa, Teiji Uozumi, and Shuji Abe. "Seasonal dependence of semidiurnal equatorial magnetic variation during quiet and disturbed periods." E3S Web of Conferences 127 (2019): 02025. http://dx.doi.org/10.1051/e3sconf/201912702025.

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The analysis of 20-year long-term semidiurnal lunar tidal variations gave the evidence that the semidiurnal variations are completely different between the magnetic quiet and disturbed periods. This is the first time that the seasonal dependence of disturbance-time semidiurnal variation has been provided from the analysis of the EE-index. We found the Kp dependence of semidiurnal variation: For full and new moon phase, counter troughs are amplified during disturbance time, possibly related to disturbance dynamo. For all moon phase, there are positive enhancements in dawn and strong depressions

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41

Ferrándiz, J. M., Yu V. Barkin, and J. Getino. "Tidal Variations of the Earth Rotation." International Astronomical Union Colloquium 178 (2000): 565–69. http://dx.doi.org/10.1017/s025292110006173x.

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AbstractThe equations for the rotation of a weakly deformable celestial body in non canonical Andoyer variables have been used to study the perturbation of Earth rotation due to tidal deformation raised by the Moon and Sun. A theory of the perturbed rotational motion of an isolated weakly deformable body in Andoyer variables and in components of the angular velocity has been developed. Mantle tidal deformations due to lunar and solar influences were analytically described and taken into account. Perturbations of the first order in the Earth’s polar motion were determined.

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42

Dawkins, E. C. M., M. Sarantos, D. Janches, E. Mierkiewicz, and A. Colaprete. "Selenographic and Local Time Dependence of Lunar Exospheric Sodium as Observed by LADEE." Planetary Science Journal 3, no. 9 (2022): 220. http://dx.doi.org/10.3847/psj/ac8805.

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Abstract Even though sodium (Na) has been known to be a constituent of the lunar exosphere for the past thirty years, limitations introduced by Earth-based observations make it difficult to determine how its distribution varies with local time. We used observations from the Ultraviolet and Visible Spectrometer instrument on board the NASA Lunar Atmosphere and Dust Environment Explorer mission to search for evidence of near-instantaneous dayside variation of exospheric Na across one lunation (2014 February–March). Through comparison with model simulations, the data appear to be consistent with

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43

Huang, Yinn-Nien. "Solar and Lunar Daily Geomagnetic Variations at Lunping from 1966 to 1989." Terrestrial, Atmospheric and Oceanic Sciences 1, no. 3 (1990): 243. http://dx.doi.org/10.3319/tao.1990.1.3.243(a).

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44

Baumann-Pickering, Simone, Ana Širović, Marie A. Roch, et al. "Diel and lunar variations of marine ambient sound in the North Pacific." Journal of the Acoustical Society of America 130, no. 4 (2011): 2536. http://dx.doi.org/10.1121/1.3655131.

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45

Miljkovic, K., M. A. Wieczorek, G. S. Collins, et al. "Asymmetric Distribution of Lunar Impact Basins Caused by Variations in Target Properties." Science 342, no. 6159 (2013): 724–26. http://dx.doi.org/10.1126/science.1243224.

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46

Rosser, W. G. V., and D. M. Schlapp. "Geomagnetic lunar variations due to the ocean dynamo measured at European observatories." Geophysical Journal International 103, no. 1 (1990): 257–60. http://dx.doi.org/10.1111/j.1365-246x.1990.tb01767.x.

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47

Anufriev, G. S. "Long-term variations of solar corpuscular fluxes based on lunar soil samples." Astrophysical Bulletin 68, no. 3 (2013): 352–57. http://dx.doi.org/10.1134/s1990341313030097.

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48

CHENET, H., P. LOGNONNE, M. WIECZOREK, and H. MIZUTANI. "Lateral variations of lunar crustal thickness from the Apollo seismic data set." Earth and Planetary Science Letters 243, no. 1-2 (2006): 1–14. http://dx.doi.org/10.1016/j.epsl.2005.12.017.

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49

Hofmeister, Anne M., Robert E. Criss, and Everett M. Criss. "Theoretical and Observational Constraints on Lunar Orbital Evolution in the Three-Body Earth-Moon-Sun System." Astronomy 1, no. 2 (2022): 58–84. http://dx.doi.org/10.3390/astronomy1020007.

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Extremely slow recession of the Moon from the Earth has been recently proposed and attributed to conversion of Earth’s axial spin to lunar orbital momentum. This hypothesis is inconsistent with long-standing recognition that the Moon’s orbit involves three-body interactions. This and other short-comings, such as Earth’s spin loss being internal, are summarized here. Considering point-masses is justified by theory and observational data on other moons. We deduce that torque in the Earth-Moon-Sun system increases eccentricity of the lunar orbit but decreases its inclination over time. Consequent

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50

Eade, J. C. "Southeast Asian Intercalation: Variations and Complexities." Journal of Southeast Asian Studies 24, no. 2 (1993): 239–50. http://dx.doi.org/10.1017/s0022463400002617.

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One of the constant problems for historians of Southeast Asia is to assimilate its system of adding extra days and extra years to the lunar calendar to make it keep pace with the solar calendar. It is well known that the addition of an extra month should take place 7 times in every 19 years (adhikames), and that the addition of an extra day should occur 11 times in every 57 years (adhikawan). It is also known that the extra month is called second Ashadha and that in Thailand and Cambodia the extra day is given to the previous month, Jyestha.

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