Event 20210729-8
2021-07-29 09:28:24.540 UTC 27 km 5.3 mb
55.6766°N, 157.5446°W
North Pacific Ocean; 81 km from Mitrofania (historical), Alaska, United States
Time Error: 2.62 s Analysis Type: Manual
Time RMS: 1.29 s Num. Stations: 10
Depth Error: 20 km Num. Phases: 10
Reference Elevation: 0 km Max. Intensity (MMI):
Azimuth Gap: 209° Effects Type: Seismic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
Emblem favorite 5.3 mb BH Action show
6.1 mB_BB 1 0.6 NEIC Action show
5.5 M 7 0.7 NEIC Action show
5.2 mb 6 0.2 NEIC Action show
 
Origin Details
Ellipse Major: 45.10 km Seismic Moment:
Ellipse Minor: 11.60 km Corner Frequency:
Ellipse Strike: 153.0° Stress Drop:
Min. Distance: 3.45° Source Radius:
Max. Distance: 86.73° Location Method: Inversion
Fixed Location: no Author: NEIC
Fixed Depth: no Event Type: Earthquake
Fixed Phase: no External Event ID: HYDRA_RED@71846
Fixed Time: no External Origin ID: HYDRA_RED@135501
 
Error Ellipse
Length Azimuth Dip Action
Maximum 108.40 km 153.00° 12.00° Action show
Intermediate 27.50 km 61.00° 9.00° Action show
Minimum 17.30 km 295.00° 73.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.PET.00.BHZ 2021-07-29 09:34:00.809 UTC 84.7 0.90 s 5.4 mb 25.35° 282.5° Action show
IU.MAKZ.00.BHZ 2021-07-29 09:39:10.085 UTC 12.4 0.70 s 5.1 mb 66.32° 319.8° Action show
II.AAK.00.BHZ 2021-07-29 09:39:50.809 UTC 43.6 0.90 s 5.5 mb 72.60° 322.5° Action show
IU.KIEV.00.BHZ 2021-07-29 09:40:05.960 UTC 85.1 0.70 s 5.9 mb 73.84° 355.5° Action show
IU.KBL.--.BHZ 2021-07-29 09:40:39.644 UTC 13.7 0.85 s 5.0 mb 81.73° 322.8° Action show
IU.KBL.--.BHZ 2021-07-29 09:40:59.720 UTC 1165.1 18.80 s 6.1 mB_BB 81.73° 322.8° Action show
MM.KI02.--.HHZ 2021-07-29 09:41:06.799 UTC 5.7 0.80 s 4.8 mb 86.73° 341.5° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
II.KDAK.00.BHZ Pn 2021-07-29 09:29:16.940 UTC 0.50 s _ 3.45° 50.3° yes Time Action show
IU.COLA.00.BHZ Pn 2021-07-29 09:30:51.210 UTC -0.30 s _ 10.39° 23.5° yes Time Action show
IU.ADK.00.BHZ Pn 2021-07-29 09:31:10.059 UTC -2.60 s _ 11.93° 259.4° yes Time Action show
IU.PET.00.BHZ P 2021-07-29 09:33:50.960 UTC 2.00 s _ 25.35° 282.5° yes Time Action show
IU.MAKZ.00.BHZ P 2021-07-29 09:39:09.009 UTC -1.30 s _ 66.32° 319.8° yes Time Action show
II.AAK.00.BHZ P 2021-07-29 09:39:49.559 UTC 0.30 s _ 72.60° 322.5° yes Time Action show
IU.KIEV.00.BHZ P 2021-07-29 09:39:54.660 UTC -1.60 s _ 73.84° 355.5° yes Time Action show
IU.KBL.--.BHZ P 2021-07-29 09:40:39.119 UTC -1.60 s _ 81.73° 322.8° yes Time Action show
QK.KHWL.--.HHZ P 2021-07-29 09:41:05.640 UTC 0.40 s _ 86.59° 342.6° yes Time Action show
MM.KI02.--.HHZ P 2021-07-29 09:41:06.299 UTC 0.30 s _ 86.73° 341.5° yes Time Action show

Ground Motion

No ground motions for this event.