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Thread: Earthquake echoes and solar flare echoes?

  1. #1
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    Earthquake echoes and solar flare echoes?

    Do not know what to think about this. Any ideas, anyone?

    https://arxiv.org/abs/1905.10644

    Round-the-world echo of earthquake and solar flare

    Anatol Guglielmi, Vladimir Parkhomov (Submitted on 25 May 2019)

    We drew attention to the analogy between the round-the-world seismic echo on the Earth and on the Sun. The phenomenon of echo on the Earth is observed during earthquakes. It was found that the main shock of earthquake excites a circular surface wave, which having rounded the Earth returns to the epicenter and stimulates a repeated earthquake (aftershock) 3 hours after the main shock. Apparently, something similar happens on the Sun during a chromospheric flare. We found signs of a small increase in flare brightness approximately one hour after reaching maximum brightness. The phenomenon is explained by the fact that the converging surface wave, which has returned to the epicenter after the round-the-world trip, has a definite impact on the flare area.

  2. #2
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    I like it.

  3. #3
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    I'm no expert in the physics, but it sounds reasonable.
    At night the stars put on a show for free (Carole King)

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  4. #4
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    Is it just me, or is this helioseismology 101? If, as they state, 10% of the data show this result, how could this be something to write about, assuming that it already has been addressed at length? The antipodal point concentration is interesting since we are new to backside observing.

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  5. #5
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    I had never heard of the 3-hour aftershock for earthquakes, and I had trouble with the analogy with flares. I see it better now.

  6. #6
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    Quote Originally Posted by Roger E. Moore View Post
    I had never heard of the 3-hour aftershock for earthquakes, and I had trouble with the analogy with flares. I see it better now.
    This also applies to major impacts especially for the KT event. I'm not that familiar with many details but some have argued that volcanic activity rather than the impact is to blame but the idea that a major impact could trigger other earth-shattering (ha) events seems likely. I want to say some antipodal activity has been suggested opposite the Yucatan, but I could be wrong.
    We know time flies, we just can't see its wings.

  7. #7
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    Antipodal Regions Of Planetary Impacts

    Here are some interesting links for planetary impacts:

    https://www.google.com/search?q=anti...hrome&ie=UTF-8

    If this link fails, the Google search was for:

    antipodal impact effects

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