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M6.1 from Adak Alaska created long 80 m and 40 m opening

Discussion in 'Ham Radio Discussions' started by VE7DXW, Jan 4, 2021.

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  1. VE7DXW

    VE7DXW Ham Member QRZ Page

    Hi Everybody;


    Highlights:
    M6.1 235 km WSW of Adak Alaska 2021-01-03 12:38 det.: 80 m, 40 m post propag., precursor (-6 h to +3 h)



    NOAA Alert:
    Space Weather Message Code: WATA20
    Serial Number: 879
    Issue Time: 2021 Jan 03 2044 UTC
    WATCH: Geomagnetic Storm Category G1 Predicted

    USGS detected minor quakes created propagation:
    M2.68 6 km SE of Maria Antonia Puerto Rico 2021-01-03 21:32 det.: 40 m, 30 m, 20 m sporad.propag.
    M2.51 3 km E of La Parguera Puerto Rico 2021-01-03 19:58 det.: 20 m sporadic propag.
    M2.9 14 km SW of Falls City Texas 2021-01-03 17:34 det.: 80 m, 20 m sporadic propag.
    M2.9 51 km W of Mentone Texas 2021-01-03 17:07 det.: 80 m, 40 m atten.
    M2.59 5 km SSW of Indios Puerto Rico 2021-01-03 17:03 det.: 80 m, 40 m atten.
    M2.66 4 km SE of Maria Antonia Puerto Rico 2021-01-03 15:26 det.: 80 m atten., 40 m propag.
    M2.6 30km SW of Furnace Creek CA 2021-01-03 14:42 det.: 80 m, 40 m propag.
    M4.4 8 km SE of Doayanyol Turkey 2021-01-03 14:17 det.: 80 m, 40 m propag.
    M4.1 157 km WNW of Iwanai Japan 2021-01-03 14:14 det.: 80 m, 40 m propag.
    M2.81 0 km ESE of Magas Arriba Puerto Rico 2021-01-03 13:43 det.: 80 m, 40 m propag.
    M4.4 71 km WSW of Pimentel Peru 2021-01-03 10:14 det.: 80 m propag.
    M3.4 34 km NW of Beaver Alaska 2021-01-03 09:58 det.: 80 m propag.
    M3.4 37 km NW of Beaver Alaska 2021-01-03 09:58 det.: 80 m propag.
    M4.4 south of the Fiji Islands 2021-01-03 09:21 det.: 80 m propag.
    M2.67 13km NW of Pinnacles CA 2021-01-03 09:16 det.: 80 m propag.
    M2.7 4 km ENE of Novo Croatia 2021-01-03 08:19 det.: 80 m propag., 40 m atten.
    M3.2 22 km NE of Stryker Montana 2021-01-03 07:58 det.: 80 m propag., 40 m atten.
    M2.68 12km NW of Pinnacles CA 2021-01-03 06:05 det.: 80 m propag., 40 m atten.
    M2.8 114 km SSE of Sand Point Alaska 2021-01-03 06:02 det.: 80 m propag., 40 m atten.
    M4.2 11 km NW of Georgetown Idaho 2021-01-03 05:35 det.: 80 m propag., 40 m atten.
    M3.36 10km NW of Pinnacles CA 2021-01-03 05:21 det.: 80 m propag., 40 m atten.
    M2.92 4 km SE of Guernica Puerto Rico 2021-01-03 05:15 det.: 80 m propag., 40 m atten.
    M2.59 12km NW of Pinnacles CA 2021-01-03 04:33 det.: 80 m propag., 40 m atten.
    M2.63 9km NE of Ridgecrest CA 2021-01-03 03:59 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M2.73 9km NE of Ridgecrest CA 2021-01-03 03:58 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M3.15 12km NW of Pinnacles CA 2021-01-03 03:51 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M2.66 10km NW of Verdi-Mog 2021-01-03 03:39 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M4.3 4 km SE of Champerico 2021-01-03 03:25 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M3.5 10 km NE of Cooper Landing Alaska 2021-01-03 03:13 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M4.1 91 km ESE of Hualien City Taiwan 2021-01-03 02:50 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M2.65 12km NW of Pinnacles CA 2021-01-03 02:45 det.: 80 m propag., 40 m, 15 m, 10 m atten.
    M3.53 87 km WNW of The Bottom Bonaire 2021-01-03 01:55 det.: 80 m, 40 m propag., 15 m, 10 m attn.


    Today there were 12 significant earth quakes that were recorded by the USGS ranging in the size from M4.5 to M6.1. The total power output of all the quakes that were recorded by the USGS was 44793.06 GJ or 518.44 MW over a 24 h period.


    All of these quakes were recorded by the RF-Seismograph. For details and a graphical capture of the propagation and explanation see graph below.


    Synopsis: All the lower bands were open at the change of the day, enhanced by a cluster of quakes that included a M5.1 that struck 45 min before the change of the day. 20 m attenuated after midnight, but 80 m and 40 m stayed open and peaked as an in–between propagation. Interesting is the 20 m transition jump at 00:45 UTC that lasted to 03:15 UTC and drops just after the second M5.1. Both came from the southern Mid-Atlantic Ridge at 03:21 UTC and then 6 min later for the second quake, which also created a 20 m spike. 40 m noise level dropped and it also faded with some additional minor quakes all below M3.6 from Pinnacles, California at 02:45 UTC and then the one from Cooper Landing, Alaska 36 min after. After 04:00 UTC 80 m boomed-in, enhanced five local minor quakes, all below M3.2. The first one was at 03:39 UTC from Verdi-Mogul, Nevada and then the multiple quakes from Pinnacles and Ridgecrest, California which lasted to 04:33 UTC. At 04:57 UTC the M5.1 from Tonga struck and enhanced 80 m, but attenuated 40 m. This condition lasted past more local minor quakes and the M5.1 from Japan at 05:24 UTC and the M5.2 again from the Mid-Atlantic Ridge that followed within 1 min and also created a 20 m spike. With more minor quakes from Idaho, Alaska and California after 06:00 UTC the band conditions stayed the same. At 06:42 UTC the M5.0 from Japan created a noise dome on 40 m and a spike on 20 m. After 07:00 UTC the 80 m noise floor drops significantly as the strongest quake of the day, which also had a very long precursor develops. As we get closer to this quake the bands all fade even more. Even the M4.7 from Larson Bay, Alaska at 08:45 UTC and several local minor quakes from California, Alaska and Peru before 11:00 UTC were having little effect. 80 m dipped at the same time and 40 m dipped as the M4.7 from Guatemala struck at 11:52 UTC. As this quake released and was quantified as a M6.1, striking at 12:38 UTC and was located at Adak, Alaska. The effect of the quake was even more amplified with the M4.5 from Chile at 13:20 UTC and the M4.7 Guatemala 2 min after. As the event wound down, several minor quakes prolonged the opening. Interesting is the M2.66 from Puerto Rico striking at 15:26 UTC and bringing up 20 m, while attenuating 80 m briefly. There is a triple event of local quakes all below M3.0 striking at 17:03 UTC and the 4 min and 27 min, which attenuated all bands, except 30 m, which faded after 18:00 UTC. 20 m came back sporadically after the M5.0 from Indonesia, striking at 19:13 UTC, minor quakes from Puerto Rico and the M4.5 from Indonesia that released at 21:53 UTC. After 23:00 UTC there is an event that has not been released as of the time of this report.


    [​IMG]


    Mag Location Time Depth [km] Detected

    M4.5 144 km NNW of Kendari Indonesia 2021-01-03 21:53 10.0 40 m, 30 m propag. 20 m sporadic propag.

    M5.0 137 km NNW of Kendari Indonesia 2021-01-03 19:13 10.0 20 m sporadic propag.

    M4.7 64 km S of Puerto San José Guatem. 2021-01-03 13:22 38.99 80 m, 40 m propag.

    M4.5 31 km SSW of Ovalle Chile 2021-01-03 13:20 37.61 80 m, 40 m propag.

    M6.1 235 km WSW of Adak Alaska 2021-01-03 12:38 17.08 80 m, 40 m post propag., precursor (-6 h to +3 h)

    M4.7 71 km S of Puerto San José Guatem. 2021-01-03 11:52 38.04 80 m propag., 40 m atten.

    M4.7 11 km NNE of Larsen Bay Alaska 2021-01-03 08:45 59.9 80 m propag., 40 m spike

    M5.0 85 km SE of Katsuren-haebaru Japan 2021-01-03 06:42 10.0 80 m propag., 40 m atten., 20 m spike, precursor (-1 h to +1 h)

    M5.2 central Mid-Atlantic Ridge 2021-01-03 05:25 10.0 80 m propag., 40 m atten., 20 m spike, precursor (-1 h to +1 h)

    M5.1 77 km SE of Katsuren-haebaru Japan 2021-01-03 05:24 10.0 80 m propag., 40 m atten., precursor (-1 h to +1 h)

    M5.1 109 km ESE of Neiafu Tonga 2021-01-03 04:57 10.0 80 m propag., 40 m atten., precursor (-1 h to +1 h)

    M5.1 southern Mid-Atlantic Ridge 2021-01-03 03:27 10.0 80 m propag., 40 m atten., precursor (-3 h to +1 h)

    M5.1 southern Mid-Atlantic Ridge 2021-01-03 03:21 10.0 80 m propag., 40 m atten., precursor (-3 h to +1 h)


    If you want to receive these earthquakes reports on a regular bases please join the MDSR.io group. Please feel free to forward this message to third parties.


    All the best and 73;


    Alex - VE7DXW
     
  2. KL7AJ

    KL7AJ Ham Member QRZ Page

    Coincidence is not correlation.
     
    WA9SVD and N0TZU like this.
  3. VE7DXW

    VE7DXW Ham Member QRZ Page


    [​IMG]

    This is what propagation was yesterday... without the big quake. Do you see the difference?
     
    Last edited: Jan 4, 2021
    K0UO likes this.
  4. W2JKT

    W2JKT Ham Member QRZ Page

    Coincidence is not correlation, and even if it was, correlation is not causation.
     
    WA9SVD, K0UO, N0TZU and 2 others like this.
  5. WA1GXC

    WA1GXC Ham Member QRZ Page



    It looks like you mistakenly downloaded some poor soul's E E G. There is slight activity on Delta-waves, but this sad patient is brain-dead.


    __
    SK
     
    WA9SVD and N0TZU like this.
  6. W4NNF

    W4NNF XML Subscriber QRZ Page

    No it didn't. Unless you can show evidence for it, of course. And you have been unable to do so thus far...

    [​IMG]
     
    K8PG, N0TZU, WD4ELG and 1 other person like this.
  7. N0TZU

    N0TZU Platinum Subscriber Platinum Subscriber QRZ Page

    If high speed trading over HF takes off, no doubt we will be be entertained here with stories about how stock market fluctuations are affected by radio propagation which is affected by earthquakes.

    PS, Skeptical cat seems annoyed.
     
    WA9SVD likes this.
  8. AA4MB

    AA4MB XML Subscriber QRZ Page

    Oh, I don't know about that. We are living in the age when all you have to do to make something 'true' is repeat it enough times that folks give up trying to contradict you - or you do it long enough that they die and then nobody is left to call 'foul.' I weep for the future.
     
    K8PG and K0UO like this.
  9. KL7KN

    KL7KN Ham Member QRZ Page

    This paper might interest some here:

    https://www.sciencedirect.com/science/article/abs/pii/S0273117720308978

    "The effects of physical events on the ionosphere structure is an important field of study, especially for navigation and radio communication. The paper presents the spatio-temporal ionospheric TEC response to the recent annular solar eclipse on June 21, 2020, which spans across two continents, Africa and Asia, and 14 countries.

    This eclipse took place on the same day as the June Solstice. The Global Navigation Satellite System (GNSS) based TEC data of the Global Ionosphere Maps (GIMs), 9 International GNSS Service (IGS) stations and FORMOSAT-7/COSMIC-2 (F7/C2) were utilized to analyze TEC response during the eclipse. The phases of the TEC time series were determined by taking the difference of the observed TEC values on eclipse day from the previous 5-day median TEC values. The results showed clear depletions in the TEC time series on June 21.

    These decreases were between 1-9 TECU (15-60%) depending on the location of IGS stations. The depletions are relatively higher at the stations close to the path of annular eclipse than those farther away. Furthermore, a reduction of about -10 TECU in the form of an equatorial plasma bubble (EPB) was observed in GIMs at ∼20o away from the equator towards northpole, between 08:00 - 11:00 UT where its maximum phase is located in southeast Japan. Additionally, an overall depletion of ∼10% was observed in F7/C2 derived TEC at an altitude of 240 km (hmF2) in all regions affected by the solar eclipse, whereas, significant TEC fluctuations between the altitudes of 100 km - 140 km were analyzed using the Savitzky-Golay smoothing filter. To prove TEC depletions are not caused by space weather, the variation of the sunspot number (SSN), solar wind (VSW), disturbance storm-time (Dst), and Kp indices were investigated from 16th to 22nd June. The quiet space weather before and during the solar eclipse proved that the observed depletions in the TEC time series and profiles were caused by the annular solar eclipse"
     
  10. W4NNF

    W4NNF XML Subscriber QRZ Page

    Future? OM, I weep for the PRESENT. :(

    This is an age of scientific illiteracy where every entitled person believes their "theories" should have equal weight compared to what those darned old scientists say.
     
    AA4MB, K8PG, WA1GXC and 1 other person like this.

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