Further investigations of a variation of geomagnetic activity with lunar phase

Stolov, Harold L.

doi:10.1029/jz070i019p04921

Cited by 27 publications

(18 citation statements)

References 14 publications

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“…[1964] were, however, unable to find any dependence of terrestrial magnetic activity on lunar phase. Stolov [1965] has found that the observed variation of geomagnetic activity with lunar phase requires lunar latitudes at full moon within about 4 ø from the ecliptic plane, a distance of approximately 4 RE.…”

Section: Numerious Theories Have Been Brought Forthmentioning

confidence: 99%

Magnetic storms in the Earth's magnetic tail

Behannon

Ness²

1966

J. Geophys. Res.

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Section: Numerious Theories Have Been Brought Forthmentioning

confidence: 99%

Magnetic storms in the Earth's magnetic tail

Behannon

Ness²

1966

J. Geophys. Res.

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“…(2) Comparison with random or "randomized 11 data [Stolov andCameron, 1964, Stolov, 1965;Davidson and Martyn, 1964] , and ,…”

Section: The Solar Effect At the Lunar Periodmentioning

confidence: 99%

The lunar period, the solar period, andK_p

Rassbach¹,

Dessler²,

Cameron³

1966

J. Geophys. Res.

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The variation of geomagnetic activity with the phase of the moon has been tested for statistical significance. The fluctuations in Kp, at the lunar period are typical of the periods near it and in fact are within one standard deviation of the average fluctuation amplitude. Furthermore, these Kp fluctuations appear to be due to the sun. The so‐called 27‐day peak due to the sun (the well‐known M‐region effect) has a width of about a week and thus is not a sharp peak but contributes to periods between about 24 and 31 days. Any narrow‐banded detection system, such as the superposed epoch analysis, will sense the solar effect anywhere within this broad interval. The 29.5‐day lunar period falls within the interval; Kp analyses at the lunar period should take into account the nonrandom variation in Kp caused by the broad solar peak. It is shown that previous analyses concluding that there is a significant lunar‐Kp effect have treated the data so as to disregard the possible solar origin of the effects found. When the solar peak is included in the analyses, the hypothesized lunar effect falls well within the limits of chance occurrence. We conclude that the available data do not indicate any statistically significant lunar influence on geomagnetic activity; the effect at 29.53‐days periodicity that had been attributed to the moon is actually due to the sun.

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“…The 24.8-hour lunar day, on the other hand, leads to a tidal cycle of 12.4 h, with high tides when the Moon is positioned directly above the sea water or on the point diametrically opposed on the other side of the planet. Finally, the deviation of the Moon's orbit from the Earth's equatorial plane causes the amplitude of the semidiurnal tides (with a period of 12.4 h) to be asymmetrical, leading a semidiurnal inequality in the tides, in some cases so unequal that there is only one significant ebb of water every 24.8 h and not every 12.4 h [5,6]. All these environmental changes can be perceived by animals and plants, affect their behaviour, physiology, the adaptive significance of performing certain activity at a certain time and ultimately affect their fitness.…”

Section: Introductionmentioning

confidence: 99%

Chronobiology by moonlight

et al. 2013

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Most studies in chronobiology focus on solar cycles (daily and annual). Moonlight and the lunar cycle received considerably less attention by chronobiologists. An exception are rhythms in intertidal species. Terrestrial ecologists long ago acknowledged the effects of moonlight on predation success, and consequently on predation risk, foraging behaviour and habitat use, while marine biologists have focused more on the behaviour and mainly on reproduction synchronization with relation to the Moon phase. Lately, several studies in different animal taxa addressed the role of moonlight in determining activity and studied the underlying mechanisms. In this paper, we review the ecological and behavioural evidence showing the effect of moonlight on activity, discuss the adaptive value of these changes, and describe possible mechanisms underlying this effect. We will also refer to other sources of night-time light (‘light pollution’) and highlight open questions that demand further studies.

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Further investigations of a variation of geomagnetic activity with lunar phase

Cited by 27 publications

References 14 publications

Magnetic storms in the Earth's magnetic tail

Magnetic storms in the Earth's magnetic tail

The lunar period, the solar period, andK_p

Chronobiology by moonlight

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Further investigations of a variation of geomagnetic activity with lunar phase

Cited by 27 publications

References 14 publications

Magnetic storms in the Earth's magnetic tail

Magnetic storms in the Earth's magnetic tail

The lunar period, the solar period, andKp

Chronobiology by moonlight

Contact Info

Product

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The lunar period, the solar period, andK_p