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Solar eclipse
About: Solar eclipse is a research topic. Over the lifetime, 2737 publications have been published within this topic receiving 22625 citations.
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TL;DR: In this paper, the authors reported the first observations on sensitivity of the sea breeze circulation cell to short-term obscuration in solar irradiance and observed that the vertical thickness of sea breeze cell was confined to 300m on the eclipse day, whereas it was extending to about 610 m on the control day.
27 citations
TL;DR: In this article, a method of determining the large scale structure of the coronal and interplanetary magnetic fields has been described, which has been partially validated by successful comparisons of the observed interplanetery magnetic field with a field computed from photospheric observations according to this formalism.
Abstract: A METHOD of determining the large scale structure of the coronal and interplanetary magnetic fields has recently been described1. The model originated as an attempt to explain the observed large scale structure of the interplanetary magnetic fields. The model has been partially validated by successful comparisons of the observed interplanetery magnetic field with a field computed from photospheric observations according to this formalism. I have established further evidence in support of the model by comparisons of the computed coronal magnetic structure with coronal green line (γ5303) emission2. The model has been further investigated by comparisons with the coronal structures revealed in eclipse photographs, and this process has suggested the possibility of making a prediction of the coronal structures to be expected at the solar eclipse of September 22, 1968.
27 citations
TL;DR: Chimonas and Hines as mentioned in this paper pointed out that the Moon's shadow on the Earth's atmosphere during a solar eclipse constitutes a cooling region travelling at supersonic speed, and that it may therefore be expected to generate a bow wave with a magnitude of about 10−5 atmosphere at ground level and 10−1 of ambient pressure at 200 km altitude.
Abstract: Chimonas and Hines1 have pointed out that the Moon's shadow on the Earth's atmosphere during a solar eclipse constitutes a cooling region travelling at supersonic speed. It may therefore be expected to generate a bow wave with a magnitude of about 10−5 atmosphere at ground level and 10−1 of ambient pressure at 200 km altitude. Chimonas2 estimates the frequency of the bow wave to be very low, corresponding to a period of about 4 h.
26 citations
TL;DR: In this paper, the response of the equatorial electrojets to solar eclipses is studied and it is shown that the depression of the EEJ during an eclipse favors the formation of a counter electrojet.
26 citations
TL;DR: In this article, a ground-level pressure wave was detected at three stations in India and one station in Java, Indonesia during a solar eclipse, with a quasi-period of ∼4 h and a wave velocity of ∼320 m s−1.
Abstract: During a solar eclipse the Moon's shadow moves at supersonic speed through the Earth's atmosphere. Chimonas and Hines1,2 suggested that the resultant cooling of the atmosphere would generate a bow wave of atmospheric gravity waves, which may be detectable as a travelling ionospheric disturbance or as a ground-level atmospheric pressure variation. Although the evidence for gravity waves in the ionosphere from a solar eclipse is still weak, they may have been detected3. Ground-level pressure changes during solar eclipses occur near the region of totality4, but the measured wave velocity and period do not agree with that of the predicted disturbance5,6. We now report the detection of a ground-level pressure wave detected at three stations in India and one station in Java, Indonesia. These data may provide the first direct observation of eclipse generated gravity waves over a very long range. The most distant station in India was 6,600 km from the eclipse centre line. The microbarometer recordings indicate that a wave disturbance was recorded at each station with a quasi-period of ∼4 h and a wave velocity of ∼320 m s−1.
26 citations