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Shallow M5.1 quake from North Carolina changes 40 m propagation

Discussion in 'Ham Radio Discussions' started by VE7DXW, Aug 10, 2020.

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  1. VE7DXW

    VE7DXW Ham Member QRZ Page

    The unusual thing about this quake was that it was only at a depth of 3.7 km (2 miles) and that is why a lot of people felt it!
  2. WA1GXC

    WA1GXC Ham Member QRZ Page

    The histogram chart of ionospheric events/frequency bands/seismic events portrayed in the initial post is interesting--as is the narrative

    accompanying it which rather than stating, "There is an apparent correlation..." makes gratuitous factual declarations such as, "..and it completely

    changed the propagation."

    I call your attention to the AMTRAK schedule of train departures on that day from Boston South Station to New York Penn Station, starting at 0605EDT

    (1005Z). The trains are powered by overhead catenary lines energized with 25kV AC, 25Hz. The events flagged in the narrative seem to fit perfectly

    with the narrow time-window of these trains proceeding at-speed shortly after passing Boston Back Bay station, 2 miles westbound.

    Here's the departure schedule. All times EDT:

    Those 1:40PM and 4:15PM departures really kicked 15m and 20m's ass.

    Do you see the connection? It's there. But any inference about the trains' departure and ionospheric phenomena would appear to most reasonable
    and thoughtful people to be nonsense. And they would be right.

    The word in German, which Einstein used quite a lot, is "Quatsch". It doesn't precisely translate to English, but it sounds what it means.

    If you want to read an enjoyable and thoughtful speech on integrity and honesty in science, take 5 minutes and read a transcript of a graduation
    address given by Nobel Prize recipient in Physics (and a real scientist) Richard Feynman. Worked on the atomic bomb project in his 20's.

    Google: "Cargo Cult Science-Feynman"

    I don't know about you, but for me this stuff's way past its pull-date from the dairy department.
    Last edited: Aug 11, 2020
    K4AGO, WZ7U and NN4RH like this.
  3. K4AGO

    K4AGO Ham Member QRZ Page

    I am in Statesville, which is about 30 miles away from the epicenter. I was operating 20 meters when the earthquake reportedly occurred. I did not feel the quake and did not notice any change in propagation before, during, or after the earthquake. The fact that I neither felt the quake nor experienced changes in propagation is not evidence that either did not occur. But, then, I am not claiming that they did not occur. You are claiming they did. So I would ask that you please provide evidence to support your theory.

    The above-referenced graph is interesting but is not proffered evidence of cause and effect.
    Last edited: Aug 11, 2020
  4. K4AGO

    K4AGO Ham Member QRZ Page

    Well stated. I completely agree.
  5. K4AGO

    K4AGO Ham Member QRZ Page

    The damage was minimal in Sparta.

    I am in Statesville and felt nothing either. Also, I was operating 20 meters at the time and noticed no change in propagation; not that I would expect any.
    W4HWD likes this.

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