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Thread: Earthquakes in the DR

  1. #261
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    USGS has updated the epicenter and magnitude of the quake that occurred at 14:12 UTZ in the eastern portion of the country.

    M4.5 Earthquake - Dominican Republic region
    Preliminary Report
    Magnitude 4.5
    Date-Time • 22 Dec 2018 14:12:18 UTC
    • 22 Dec 2018 10:12:18 near epicenter
    • 22 Dec 2018 10:12:18 standard time in your timezone
    Location 19.182N 68.897W
    Depth 109 km
    Distances • 27.1 km (16.8 mi) NE of Miches, Dominican Republic
    • 46.4 km (28.8 mi) E of Saman�, Dominican Republic
    • 48.4 km (30.0 mi) NNE of Santa Cruz de El Seibo, Dominican Republic
    • 53.5 km (33.2 mi) ENE of Sabana de La Mar, Dominican Republic
    • 59.9 km (37.2 mi) NE of Hato Mayor del Rey, Dominican Republic
    Location Uncertainty Horizontal: 6.9 km; Vertical 3.9 km
    Parameters Nph = 46; Dmin = 93.8 km; Rmss = 0.48 seconds; Gp = 200°
    Version =
    Event ID pr 20183560 ***This event has been revised.

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  2. #262
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    One may have moved from its place on the table. However it means this cave dweller can still handle two drinks at the same time. lol


    Regards,

    PJT

  3. #263
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    Preliminary Report
    Magnitude 3.5
    Date-Time • 28 Dec 2018 02:52:05 UTC
    • 27 Dec 2018 22:52:05 near epicenter
    • 27 Dec 2018 22:52:05 standard time in your timezone
    Location 18.622N 68.958W
    Depth 111 km
    Distances • 4.4 km (2.7 mi) NNE of Guaymate, Dominican Republic
    • 18.0 km (11.2 mi) SSE of Santa Cruz de El Seibo, Dominican Republic
    • 21.7 km (13.4 mi) N of La Romana, Dominican Republic
    • 26.4 km (16.4 mi) W of Salvale�n de Higuey, Dominican Republic
    • 35.1 km (21.8 mi) ESE of Hato Mayor del Rey, Dominican Republic
    Location Uncertainty Horizontal: 3.1 km; Vertical 1.3 km
    Parameters Nph = 43; Dmin = 65.3 km; Rmss = 0.15 seconds; Gp = 164°
    Version =
    Event ID pr 20183620

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  4. #264
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    Default Guaymate

    Been observing USGS quake website daily for years and it seems the Guaymate area-Central Romana cane fields, is a hotbed of quakes.

    Wondering why ? Cannot find a map recording a fault line near there.


    Regards,

    PJT

  5. #265
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    Earthquakes do not always occur along a fault line but often do. Away from fault lines, the ground can still be moving. If this moment is in opposition to the the movement of an adjacent area of land or if the area of movement is comprised of softer rock, the movement over time can build up enough localized force that fractures the bedrock.

    Refer to the 2nd map and notice how the area around La Roman is in a wedge of land that is diverging. It would appear from the past quake history, one can assume that there is a weak spot to the north of La Roman that slips when the frictional coefficient reduces to the point that the weak spot is no longer sufficiently compressed.

    Just my guess, I'm not a seismologist.

    https://dr1.com/forums/showthread.ph...=1#post1914096
    Last edited by Cdn_Gringo; 12-28-2018 at 11:13 AM.

  6. #266
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    Preliminary Report
    Magnitude 3.4
    Date-Time • 1 Jan 2019 19:55:32 UTC
    • 1 Jan 2019 15:55:32 near epicenter
    • 1 Jan 2019 15:55:32 standard time in your timezone
    Location 18.456N 68.832W
    Depth 118 km
    Distances • 15.2 km (9.4 mi) ENE of La Romana, Dominican Republic
    • 22.0 km (13.6 mi) SW of Salvale�n de Hig�ey, Dominican Republic
    • 40.6 km (25.2 mi) SSE of Santa Cruz de El Seibo, Dominican Republic
    • 47.3 km (29.3 mi) WSW of Punta Cana, Dominican Republic
    • 49.1 km (30.4 mi) E of San Pedro de Macor�s, Dominican Republic
    Location Uncertainty Horizontal: 8.5 km; Vertical 1.5 km
    Parameters Nph = 10; Dmin = 50.6 km; Rmss = 0.17 seconds; Gp = 204°
    Version =
    Event ID pr 20190010

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  7. #267
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    A very active area for seismic activity over the past 24 hours, but this one is big enough and shallow enough to mention.

    Preliminary Report
    Magnitude 4.2
    Date-Time • 30 Jan 2019 16:42:22 UTC
    • 30 Jan 2019 11:42:22 near epicenter
    • 30 Jan 2019 12:42:22 standard time in your timezone
    Location 19.273N 68.098W
    Depth 10 km
    Distances • 83.0 km (51.5 mi) NNE of Punta Cana, Dominican Republic
    • 97.1 km (60.2 mi) NE of Salvale�n de Hig�ey, Dominican Republic
    • 113.9 km (70.6 mi) ENE of Santa Cruz de El Seibo, Dominican Republic
    • 130.4 km (80.9 mi) E of Saman�, Dominican Republic
    • 131.4 km (81.5 mi) NE of La Romana, Dominican Republic
    Location Uncertainty Horizontal: 5.6 km; Vertical 2.0 km
    Parameters Nph = 25; Dmin = 89.0 km; Rmss = 0.86 seconds; Gp = 168°
    Version =
    Event ID us 1000is41

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  8. #268
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    Nice little tremor here in Santiago about 5 minutes ago.

  9. #269
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    M 5.1 - 24km SSE of Boca de Yuma, Dominican Republic
    2019-02-04 14:33:48 (UTC)18.163°N 68.553°W63.0 km depth

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  10. #270
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    Emptied some offices in Sto Domingo & Punta Cana area today.

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