Event 20210804-21
2021-08-04 09:26:56.050 UTC 128 km 5.6 mb
36.8146°N, 141.7529°E
North Pacific Ocean; 72 km from Ena, Fukushima, Japan
Time Error: 0.70 s Analysis Type: Manual
Time RMS: 0.34 s Num. Stations: 0
Depth Error: 23 km Num. Phases: 10
Reference Elevation: 0 km Max. Intensity (MMI):
Azimuth Gap: 168° Effects Type: Seismic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
Emblem favorite 5.6 mb BH Action show
5.8 M 2 1.4 NEIC Action show
5.6 mb 2 0.4 NEIC Action show
 
Origin Details
Ellipse Major: 17.50 km Seismic Moment:
Ellipse Minor: 12.70 km Corner Frequency:
Ellipse Strike: 147.0° Stress Drop:
Min. Distance: 33.08° Source Radius:
Max. Distance: 75.99° Location Method: Inversion
Fixed Location: no Author: NCMS
Fixed Depth: no Event Type: Earthquake
Fixed Phase: no External Event ID: HYDRA_RED@72333
Fixed Time: no External Origin ID: HYDRA_RED@136433
 
Error Ellipse
Length Azimuth Dip Action
Maximum 50.00 km 142.00° 42.00° Action show
Intermediate 32.90 km 351.00° 43.00° Action show
Minimum 29.50 km 246.00° 14.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.DAV.00.BHZ 2021-08-04 09:33:26.039 UTC 378.0 0.45 s 6.5 mb 33.05° 210.4° Action show
IU.MAKZ.00.BHZ 2021-08-04 09:34:58.710 UTC 13.1 0.80 s 4.7 mb 44.67° 302.5° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
IU.DAV.00.BHZ P 2021-08-04 09:33:19.289 UTC -0.40 s _ 33.05° 210.4° yes Time Action show
IU.MAKZ.00.BHZ P 2021-08-04 09:34:55.859 UTC -0.10 s _ 44.67° 302.5° yes Time Action show
II.KDAK.00.BHZ P 2021-08-04 09:35:14.609 UTC 0.10 s _ 47.11° 41.7° yes Time Action show
AE.SHM.--.HHZ P 2021-08-04 09:38:03.140 UTC -0.60 s _ 71.60° 289.3° yes Time Action show
OM.SOH.--.HHZ P 2021-08-04 09:38:07.329 UTC -0.60 s _ 72.31° 287.3° yes Time Action show
DN.HAT.--.HHZ P 2021-08-04 09:38:07.349 UTC -0.20 s _ 72.24° 288.1° yes Time Action show
AE.ALN.--.HHZ P 2021-08-04 09:38:11.400 UTC -0.30 s _ 72.94° 287.6° yes Time Action show
DN.ASU.--.HHZ P 2021-08-04 09:38:11.630 UTC -0.20 s _ 72.96° 288.3° yes Time Action show
UE.UMZA.--.HHZ P 2021-08-04 09:38:17.569 UTC -1.10 s _ 74.14° 286.8° yes Time Action show
AE.JRN.--.HHZ P 2021-08-04 09:38:20.400 UTC -1.40 s _ 74.67° 289.9° yes Time Action show
AE.MZR.--.HHZ P 2021-08-04 09:38:24.420 UTC -0.80 s _ 75.27° 287.9° yes Action show
AE.MKZ.--.HHZ P 2021-08-04 09:38:28.339 UTC -0.90 s _ 75.98° 288.3° yes Action show

Ground Motion

No ground motions for this event.