Page 10 of 11 FirstFirst ... 891011 LastLast
Results 91 to 100 of 106

Thread: Earthquakes in the DR

  1. #91
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 2.0
    Date-Time • 29 Mar 2018 07:41:49 UTC
    • 29 Mar 2018 03:41:49 near epicenter
    • 29 Mar 2018 03:41:49 standard time in your timezone
    Location 18.991N 68.066W
    Depth 19 km
    Distances • 79 km (49 miles) ENE (59 degrees) of Higuey, La Altagracia, Dominican Republic
    • 105 km (66 miles) ENE (76 degrees) of El Seybo, El Seybo, Dominican Republic
    • 112 km (70 miles) NW (310 degrees) of Rincon, PR
    • 114 km (71 miles) ENE (57 degrees) of La Romana, La Romana, Dominican Republic
    • 206 km (128 miles) ENE (74 degrees) of SANTO DOMINGO, Dominican Republic
    Location Uncertainty Horizontal: 3.4 km; Vertical 9.1 km
    Parameters Nph = 7; Dmin = 63.6 km; Rmss = 0.50 seconds; Gp = 217°
    Version =
    Event ID pr 20180880

    Capture.JPG

  2. Likes Russell liked this post
  3. #92
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 3.0
    Date-Time • 30 Mar 2018 02:21:52 UTC
    • 29 Mar 2018 22:21:52 near epicenter
    • 29 Mar 2018 22:21:52 standard time in your timezone
    Location 18.043N 68.151W
    Depth 55 km
    Distances • 87 km (54 miles) SE (137 degrees) of Higuey, La Altagracia, Dominican Republic
    • 97 km (60 miles) ESE (116 degrees) of La Romana, La Romana, Dominican Republic
    • 101 km (62 miles) WSW (251 degrees) of Rincon, PR
    • 197 km (122 miles) ESE (105 degrees) of SANTO DOMINGO, Dominican Republic
    Location Uncertainty Horizontal: 1.6 km; Vertical 2.6 km
    Parameters Nph = 14; Dmin = 115.9 km; Rmss = 0.22 seconds; Gp = 192°
    Version =
    Event ID pr 20180890

    Capture.JPG

  4. #93
    Bronze
    Join Date
    Mar 2007
    Posts
    1,514
    Post Thanks / Like

    Default

    Cpt - Gringo,
    A lot of very shallow earthquakes today - in the Mona Channel. Usually they are 100 Km plus deep. These were 10 to 20 Km deep. Any thought on this Cpt-Gringo ?

    Olly and the team

    Source Info USGS

  5. #94
    Silver
    Join Date
    Nov 2014
    Posts
    3,902
    Post Thanks / Like

    Default

    Quote Originally Posted by Olly View Post
    Cpt - Gringo,
    A lot of very shallow earthquakes today - in the Mona Channel. Usually they are 100 Km plus deep. These were 10 to 20 Km deep. Any thought on this Cpt-Gringo ?

    Olly and the team

    Source Info USGS
    Along the line and extended line of the Mona Canyon it appears (which is pulling itself wider).

    https://earthquake.usgs.gov/earthqua...18093006%22%7D

    Historically there have been two big earthquakes close to either end 7.3, 1918 and 7.5, 1943.
    Last edited by ju10prd; 04-03-2018 at 06:30 PM.

  6. #95
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    The last 7 months or so has seen a significant uptick in slippage along the fault running to the north of the DR past PR. This may be having some secondary effects on the rift zone in the Mona Passage.

    The rift zone between the two big islands in the Mona Passage is normally fairly active with frequent small tremors. Usually, not this many in this short span of time though. Clearly, the seafloor in this region is currently undergoing a period of sustained shifting.

    Two ways of looking at it:

    1) Lots of little pressure releases means pressure is being dissipated regularly and a big quake is less likely.
    2) The pressure in this rift zone has built up during less active periods and the rift zone is no longer able to sustain increased build up. These frequent small releases could be akin to cracks appearing in glass before it shatters.

    By far the biggest concern for the DR in this part of the Atlantic is the major strike-slip-fault north of the island. The rift zone in the passage can produce significant shakes (5 & 6, maybe a 6.8) with the potential for a quick landing tsunami at anytime. Generally, however, the activity in the rift zone occurs at significant depth producing only a shake hazard. It is worth watching the any trends that suggest the average depth of successive tremors are rising towards the seabed.

    We do not have a way to measure the pressure that builds up in these areas and no way to ascertain whether any specific tremor takes away from or adds additional pressure within the rift. It is not particularly accurate to say a significant increase in small quakes is a prelude to a large one, but one can say that frequent small quakes indicate an increase in overall crust movement and that can mean that a large quake is more likely to occur than it would be during a period of lesser activity.

    People who live within 2 km of the coast and at an altitude of less than 250 feet need a plan to get up high quickly. Threatening waves could arrive within about 15-30 minutes along any coast in the DR. In this country, significant shaking is going to knock all sorts of things and parts of things down. From coconuts to power lines to concrete and glass. Not drowning and not getting bonked on the head are the two big immediate worries.

    For now we watch and wait, hoping option #1 is in play.

  7. #96
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 2.5
    Date-Time • 5 Apr 2018 00:39:04 UTC
    • 4 Apr 2018 20:39:04 near epicenter
    • 4 Apr 2018 20:39:04 standard time in your timezone
    Location 18.220N 68.689W
    Depth 89 km
    Distances • 38 km (24 miles) SE (128 degrees) of La Romana, La Romana, Dominican Republic
    • 45 km (28 miles) S (177 degrees) of Hig�ey, La Altagracia, Dominican Republic
    • 71 km (44 miles) ESE (112 degrees) of San Pedro de Macoris, San Pedro de Macoris, Dominican Republic
    • 137 km (85 miles) ESE (103 degrees) of SANTO DOMINGO, Dominican Republic
    Location Uncertainty Horizontal: 14.3 km; Vertical 3.3 km
    Parameters Nph = 11; Dmin = 47.4 km; Rmss = 0.37 seconds; Gp = 209°
    Version =
    Event ID pr 20180950

    Capture.JPG

  8. #97
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default Haiti

    M4.0 - HAITI REGION
    Preliminary Earthquake Report
    Magnitude 4.0
    Date-Time • 12 Apr 2018 00:45:51 UTC
    • 11 Apr 2018 19:45:51 near epicenter
    • 11 Apr 2018 20:45:51 standard time in your timezone
    Location 19.712N 73.099W
    Depth 10 km
    Distances • 37 km (23 miles) SW (227 degrees) of Port-de-Paix, Nord-Ouest, Haiti
    • 52 km (32 miles) NW (304 degrees) of Gona�ves, Artibonite, Haiti
    • 70 km (44 miles) NW (312 degrees) of Desdunes, Artibonite, Haiti
    • 86 km (53 miles) W (265 degrees) of Cap-Haitien, Haiti
    • 152 km (95 miles) NNW (328 degrees) of PORT-AU-PRINCE, Haiti
    Location Uncertainty Horizontal: 4.3 km; Vertical 1.4 km
    Parameters Nph = 32; Dmin = 156.1 km; Rmss = 1.05 seconds; Gp = 57°
    Version =
    Event ID us 2000dyja

    Capture.JPG

  9. #98
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 2.8
    Date-Time • 12 Apr 2018 02:00:02 UTC
    • 11 Apr 2018 22:00:02 near epicenter
    • 11 Apr 2018 22:00:02 standard time in your timezone
    Location 19.257N 68.036W
    Depth 61 km
    Distances • 100 km (62 miles) NE (45 degrees) of Higuey, La Altagracia, Dominican Republic
    • 119 km (74 miles) ENE (63 degrees) of El Seybo, El Seybo, Dominican Republic
    • 130 km (81 miles) NW (315 degrees) of Aguadilla, PR
    • 135 km (84 miles) NE (47 degrees) of La Romana, La Romana, Dominican Republic
    • 218 km (135 miles) WNW (294 degrees) of SAN JUAN, Puerto Rico
    Location Uncertainty Horizontal: 3.6 km; Vertical 10.3 km
    Parameters Nph = 33; Dmin = 91.1 km; Rmss = 0.73 seconds; Gp = 221°
    Version =
    Event ID pr 20181020

    Capture.JPG

  10. #99
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 3.7
    Date-Time • 16 Apr 2018 00:42:08 UTC
    • 15 Apr 2018 20:42:08 near epicenter
    • 15 Apr 2018 20:42:08 standard time in your timezone
    Location 18.548N 68.867W
    Depth 116 km
    Distances • 17 km (11 miles) NE (40 degrees) of La Romana, La Romana, Dominican Republic
    • 18 km (12 miles) WSW (244 degrees) of Higuey, La Altagracia, Dominican Republic
    • 31 km (19 miles) SE (144 degrees) of El Seybo, El Seybo, Dominican Republic
    • 114 km (71 miles) E (87 degrees) of SANTO DOMINGO, Dominican Republic
    Location Uncertainty Horizontal: 1.1 km; Vertical 1.1 km
    Parameters Nph = 22; Dmin = 117.1 km; Rmss = 0.31 seconds; Gp = 113°
    Version =
    Event ID pr 20181060

    Capture.JPG

  11. #100
    99.9% Regular User
    Join Date
    Apr 2014
    Posts
    4,615
    Post Thanks / Like

    Default

    Preliminary Earthquake Report
    Magnitude 3.2
    Date-Time • 19 Apr 2018 07:48:24 UTC
    • 19 Apr 2018 03:48:24 near epicenter
    • 19 Apr 2018 03:48:24 standard time in your timezone
    Location 18.341N 68.369W
    Depth 108 km
    Distances • 47 km (30 miles) SE (131 degrees) of Higuey, La Altagracia, Dominican Republic
    • 64 km (40 miles) E (99 degrees) of La Romana, La Romana, Dominican Republic
    • 85 km (53 miles) SE (124 degrees) of El Seybo, El Seybo, Dominican Republic
    • 168 km (104 miles) E (96 degrees) of SANTO DOMINGO, Dominican Republic
    Location Uncertainty Horizontal: 4.2 km; Vertical 2.8 km
    Parameters Nph = 13; Dmin = 144.9 km; Rmss = 0.47 seconds; Gp = 144°
    Version =
    Event ID pr 20181090 ***This event has been revised.

    Capture.JPG

Page 10 of 11 FirstFirst ... 891011 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •