Earthquake 20170428-14

2017-04-28 16:13:56.300 228.4 km 5.2 Mb
24.8873°S, 1.8658°W
South Atlantic Ocean
1074 km SE of Jamestown, Saint Helena
Time Error: 1.95 s Depth Error: 33.9 km
Num. Stations: 14 Time RMS: 0.96 s
Num. Phases: 14 Azimuth Gap: 181°
Analysis Type: Manual Max. Intensity (MMI):
Effects Type:
 

MANUALLY REVISED LOCATION

Magnitudes

Preferred Magnitude Stations Error Author Action
Emblem-favorite 5.2 Mb 6 1.0 NCMS System-search

Origin Details

Ellipse Major:22.40 km Min. Distance:9.60° Fixed Depth:no
Ellipse Minor:10.00 km Max. Distance:75.57° Fixed Phase:no
Ellipse Strike:173.0° Fixed Location:no Fixed Time:no
Author:NCMS Location Method:Inversion Event Type:Earthquake
External Event ID:HYDRA_RED@23423 External Origin ID:HYDRA_RED@98709

Error Ellipse

Azimuth Dip Magnitude Action
Max 350° 44° 69.0 km System-search
Intermediate 220° 33° 28.2 km System-search
Min 110° 26° 19.8 km System-search

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.TSUM.10.BHZ 2017-04-28 16:18:00.240 4e+04 1.10 s 5.6 Mb 18.90° 76.0° System-search
IU.LVC.00.BHZ 2017-04-28 16:23:45.410 2e+03 0.90 s 5.3 Mb 60.86° 257.0° System-search
DN.FAQ.--.HHZ 2017-04-28 16:25:10.799 512.5 2.06 s 5.9 Mb 74.40° 52.0° System-search
DN.NAZ.--.HHZ 2017-04-28 16:25:10.880 187.0 1.14 s 4.8 Mb 74.60° 52.0° System-search
OM.ASH.--.HHZ 2017-04-28 16:25:10.960 139.5 1.36 s 4.7 Mb 74.71° 53.0° System-search
II.UOSS.10.BHZ 2017-04-28 16:25:11.069 2e+03 2.65 s 5.3 Mb 74.97° 52.0° System-search
OM.MDH.--.HHZ 2017-04-28 16:25:11.180 633.5 2.90 s 5.3 Mb 75.25° 52.0° System-search
DN.HAT.--.HHZ 2017-04-28 16:25:11.359 220.0 1.70 s 4.9 Mb 74.84° 52.0° System-search
OM.SOH.--.HHZ 2017-04-28 16:25:11.549 161.0 0.98 s 4.7 Mb 74.72° 53.0° System-search
AE.MSF.--.HHZ 2017-04-28 16:25:11.940 1e+03 1.84 s 5.6 Mb 75.19° 52.0° System-search
AE.SHM.--.HHZ 2017-04-28 16:25:12.380 560.0 1.12 s 5.3 Mb 75.57° 51.0° System-search
OM.BID.--.HHZ 2017-04-28 16:25:15.059 577.0 1.34 s 5.3 Mb 75.54° 55.0° System-search
Channel Phase Time Time Residual Dir. Event Distance Event Azimuth Automatic? Defined By Action
II.SHEL.00.BHZ Pn 2017-04-28 16:16:10.130 0 s 9.60° 337.0° no Time System-search
IU.TSUM.10.BHZ P 2017-04-28 16:18:00.240 0.10 s c 18.90° 76.0° yes Time System-search
IU.LVC.00.BHZ P 2017-04-28 16:23:45.410 0 s c 60.86° 257.0° yes Time System-search
DN.FAQ.--.HHZ P 2017-04-28 16:25:10.799 1.70 s c 74.40° 52.0° yes Time System-search
AE.ALN.--.HHZ P 2017-04-28 16:25:10.880 3.50 s 74.11° 53.0° no Time System-search
DN.NAZ.--.HHZ P 2017-04-28 16:25:10.880 0.70 s 74.60° 52.0° no Time System-search
OM.ASH.--.HHZ P 2017-04-28 16:25:10.960 0.10 s 74.71° 53.0° no Time System-search
II.UOSS.10.BHZ P 2017-04-28 16:25:11.069 -1.20 s 74.97° 52.0° no Time System-search
OM.MDH.--.HHZ P 2017-04-28 16:25:11.180 -2.70 s 75.25° 52.0° no Time System-search
DN.HAT.--.HHZ P 2017-04-28 16:25:11.359 -0.30 s 74.84° 52.0° no Time System-search
OM.SOH.--.HHZ P 2017-04-28 16:25:11.549 0.60 s c 74.72° 53.0° yes Time System-search
AE.MSF.--.HHZ P 2017-04-28 16:25:11.940 -1.70 s 75.19° 52.0° no Time System-search
AE.SHM.--.HHZ P 2017-04-28 16:25:12.380 -3.30 s 75.57° 51.0° no Time System-search
OM.BID.--.HHZ P 2017-04-28 16:25:15.059 -0.50 s 75.54° 55.0° no Time System-search

Shake Maps

None

Ground Motion

None

Event 20170428-14

Time: 2017-04-28 16:13:56.300
Position:24.8873°S, 1.8658°W
Place:South Atlantic Ocean
Major Place:1074 km SE of Jamestown, Saint Helena
Depth:228.4 km
Magnitude:5.2 Mb