MID ATLANTIC RIDGE RECENT QUAKES

5.0 Mb - SOUTHERN MID-ATLANTIC RIDGE
Preliminary Earthquake Report
Magnitude
5.0 Mb
Date-Time
17 Sep 2008 21:03:41 UTC
17 Sep 2008 20:03:41 near epicenter
17 Sep 2008 15:03:41 standard time in your timezone
Location
28.156S 12.972W
Depth
10 km
Distances
2902 km (1803 miles) ESE (113 degrees) of Vitoria, Brazil
3076 km (1912 miles) WSW (252 degrees) of WINDHOEK, Namibia
Location Uncertainty
Horizontal: 18.5 km; Vertical
Parameters
Nph = 16; Dmin = 999.9 km; Rmss = 0.71 seconds; Gp = 72°M-type = Mb; Version = 6
Event ID
US 2008xbb4

5.8 Mw - CENTRAL MID-ATLANTIC RIDGE
Preliminary Earthquake Report
Magnitude
5.8 Mw
Date-Time
16 Sep 2008 07:28:25 UTC
16 Sep 2008 05:28:25 near epicenter
16 Sep 2008 01:28:25 standard time in your timezone
Location
0.958N 29.009W
Depth
10 km
Distances
1019 km (634 miles) NE (43 degrees) of Natal, Brazil
1666 km (1035 miles) SSW (202 degrees) of PRAIA, Cape Verde
Location Uncertainty
Horizontal: 6.1 km; Vertical
Parameters
Nph = 145; Dmin = 999.9 km; Rmss = 0.70 seconds; Gp = 57°M-type = Mw; Version = S
Event ID
US 2008xaar ***This event has been revised.
5.3 Mb - CENTRAL MID-ATLANTIC RIDGE
Preliminary Earthquake Report
Magnitude
5.3 Mb
Date-Time
16 Sep 2008 07:28:25 UTC
16 Sep 2008 05:28:25 near epicenter
16 Sep 2008 01:28:25 standard time in your timezone
Location
0.968N 29.008W
Depth
10 km
Distances
1020 km (634 miles) NE (43 degrees) of Natal, Brazil
1665 km (1035 miles) SSW (202 degrees) of PRAIA, Cape Verde
Location Uncertainty
Horizontal: 14.9 km; Vertical
Parameters
Nph = 78; Dmin = 999.9 km; Rmss = 0.52 seconds; Gp = 108°M-type = Mb; Version = 6
Event ID
US 2008xaar
6.4 Mw - CENTRAL MID-ATLANTIC RIDGE
Preliminary Earthquake Report
Magnitude
6.4 Mw
Date-Time
10 Sep 2008 13:08:15 UTC
10 Sep 2008 10:08:15 near epicenter
10 Sep 2008 07:08:15 standard time in your timezone
Location
8.001N 38.687W
Depth
10 km
Distances
1307 km (812 miles) N (359 degrees) of Fortaleza, Brazil
1542 km (958 miles) ENE (76 degrees) of CAYENNE, French Guiana
Location Uncertainty
Horizontal: 6.9 km; Vertical
Parameters
Nph = 234; Dmin = 999.9 km; Rmss = 1.08 seconds; Gp = 39°M-type = Mw; Version = 6
Event ID
US 2008wubm ***This event supersedes event AT00105210.
4.7 Mb - AZORES ISLANDS REGION
Preliminary Earthquake Report
Magnitude
4.7 Mb
Date-Time
6 Sep 2008 21:05:23 UTC
6 Sep 2008 19:05:23 near epicenter
6 Sep 2008 15:05:23 standard time in your timezone
Location
36.286N 33.773W
Depth
10 km
Distances
423 km (263 miles) SW (214 degrees) of Santa Cruz das Flores, Azores, Portugal
1597 km (992 miles) WNW (289 degrees) of Funchal, Madeira Islands, Portugal
2184 km (1357 miles) W (271 degrees) of LISBON, Portugal
Location Uncertainty
Horizontal: 18.1 km; Vertical
Parameters
Nph = 17; Dmin = 999.9 km; Rmss = 0.69 seconds; Gp = 100°M-type = Mb; Version = 6
Event ID
US 2008wqcg
5.7 Mw - NORTH OF ASCENSION ISLAND
Preliminary Earthquake Report
Magnitude
5.7 Mw
Date-Time
5 Sep 2008 19:07:39 UTC
5 Sep 2008 18:07:39 near epicenter
5 Sep 2008 13:07:39 standard time in your timezone
Location
1.149S 13.880W
Depth
10 km
Distances
901 km (560 miles) SSW (203 degrees) of MONROVIA, Liberia
Location Uncertainty
Horizontal: 8.8 km; Vertical
Parameters
Nph = 81; Dmin = 999.9 km; Rmss = 1.07 seconds; Gp = 43°M-type = Mw; Version = 6
Event ID
US 2008wpb6 ***This event supersedes event PT08249012.
4.8 Mb - NORTHERN MID-ATLANTIC RIDGE
Preliminary Earthquake Report
Magnitude
4.8 Mb
Date-Time
4 Sep 2008 18:47:55 UTC
4 Sep 2008 15:47:55 near epicenter
4 Sep 2008 12:47:55 standard time in your timezone
Location
30.187N 42.579W
Depth
10 km
Distances
2122 km (1318 miles) E (90 degrees) of HAMILTON, Bermuda
2338 km (1453 miles) SE (133 degrees) of Sydney, Nova Scotia, Canada
Location Uncertainty
Horizontal: 20.4 km; Vertical
Parameters
Nph = 53; Dmin = 999.9 km; Rmss = 1.15 seconds; Gp = 147°M-type = Mb; Version = Q
Event ID
US 2008wnb1
3.7 Mcd - NORTH ATLANTIC OCEAN
Preliminary Earthquake Report
Magnitude
3.7 Mcd
Date-Time
3 Sep 2008 23:17:01 UTC
3 Sep 2008 19:17:01 near epicenter
3 Sep 2008 17:17:01 standard time in your timezone
Location
19.110N 68.578W
Depth
164 km
Distances
56 km (35 miles) NNE (14 degrees) of Higüey, La Altagracia, Dominican Republic
62 km (38 miles) NE (52 degrees) of El Seybo, El Seybo, Dominican Republic
80 km (50 miles) E (98 degrees) of Samaná, Samaná, Dominican Republic
86 km (54 miles) NNE (29 degrees) of La Romana, La Romana, Dominican Republic
160 km (99 miles) ENE (65 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty
Horizontal: 10.4 km; Vertical 3.7 km
Parameters
Nph = 23; Dmin = 73.6 km; Rmss = 0.65 seconds; Gp = 183°M-type = Mcd; Version = 1
Event ID
PR p0824702
4.9 Mb - SOUTH SANDWICH ISLANDS REGION
Preliminary Earthquake Report
Magnitude
4.9 Mb
Date-Time
1 Sep 2008 19:54:48 UTC
1 Sep 2008 17:54:48 near epicenter
1 Sep 2008 13:54:48 standard time in your timezone
Location
57.944S 25.628W
Depth
87 km
Distances
128 km (80 miles) NNE (24 degrees) of Bristol Island, South Sandwich Islands
168 km (104 miles) SE (145 degrees) of Visokoi Island, South Sandwich Islands
2154 km (1338 miles) ESE (121 degrees) of STANLEY, Falkland Islands
2842 km (1766 miles) ESE (119 degrees) of Punta Arenas, Chile
Location Uncertainty
Horizontal: 14.1 km; Vertical 35.9 km
Parameters
Nph = 53; Dmin = 999.9 km; Rmss = 0.59 seconds; Gp = 68°M-type = Mb; Version = Q
Event ID
US 2008wkbk
5.5 Mb - DRAKE PASSAGE
Preliminary Earthquake Report
Magnitude
5.5 Mb
Date-Time
31 Aug 2008 01:15:25 UTC
30 Aug 2008 20:15:25 near epicenter
30 Aug 2008 19:15:25 standard time in your timezone
Location
61.184S 67.715W
Depth
10 km
Distances
438 km (272 miles) NNW (334 degrees) of Palmer Station, Antarctica
914 km (568 miles) S (169 degrees) of Punta Arenas, Chile
1213 km (754 miles) SSW (206 degrees) of STANLEY, Falkland Islands
Location Uncertainty
Horizontal: 12.8 km; Vertical
Parameters
Nph = 56; Dmin = 999.9 km; Rmss = 1.00 seconds; Gp = 97°M-type = Mb; Version = 7
Event ID
US 2008wjad ***This event supersedes event PT08244012.
6.2 Mw - NORTH OF ASCENSION ISLAND
Preliminary Earthquake Report
Magnitude
6.2 Mw
Date-Time
28 Aug 2008 15:22:24 UTC
28 Aug 2008 14:22:24 near epicenter
28 Aug 2008 09:22:24 standard time in your timezone
Location
0.084N 17.313W
Depth
10 km
Distances
1005 km (625 miles) SW (227 degrees) of MONROVIA, Liberia
Location Uncertainty
Horizontal: 9.8 km; Vertical
Parameters
Nph = 93; Dmin = 999.9 km; Rmss = 1.28 seconds; Gp = 75°M-type = Mw; Version = 7
Event ID
US 2008wgck ***This event supersedes event AT00993694.
4.7 Mb - SOUTH SANDWICH ISLANDS REGION
Preliminary Earthquake Report
Magnitude
4.7 Mb
Date-Time
22 Aug 2008 17:39:07 UTC
22 Aug 2008 15:39:07 near epicenter
22 Aug 2008 11:39:07 standard time in your timezone
Location
58.559S 24.899W
Depth
55 km
Distances
104 km (65 miles) ENE (63 degrees) of Bristol Island, South Sandwich Islands
248 km (154 miles) SSE (147 degrees) of Visokoi Island, South Sandwich Islands
2202 km (1369 miles) ESE (123 degrees) of STANLEY, Falkland Islands
2874 km (1786 miles) ESE (121 degrees) of Punta Arenas, Chile
Location Uncertainty
Horizontal: 20.3 km; Vertical
Parameters
Nph = 32; Dmin = 999.9 km; Rmss = 1.10 seconds; Gp = 75°M-type = Mb; Version = 6
Event ID
US 2008wabq
5.3 Mb - ASCENSION ISLAND REGION
Preliminary Earthquake Report
Magnitude
5.3 Mb
Date-Time
19 Aug 2008 08:33:55 UTC
19 Aug 2008 07:33:55 near epicenter
19 Aug 2008 02:33:55 standard time in your timezone
Location
8.275S 13.519W
Depth
10 km
Distances
100 km (62 miles) ESE (111 degrees) of Ascension Island
1653 km (1027 miles) S (191 degrees) of MONROVIA, Liberia
Location Uncertainty
Horizontal: 11.8 km; Vertical
Parameters
Nph = 71; Dmin = 999.9 km; Rmss = 1.12 seconds; Gp = 46°M-type = Mb; Version = 6
Event ID
US 2008vxaw
For updates, maps, and technical information, see: Event Page or U.S.G.S. Earthquake Hazards Program
National Earthquake Information CenterU.S. Geological Surveyhttp://neic.usgs.gov/


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