Earthquake 20170920-11

2017-09-20 16:37:19.400 25.8 km 6.4 Mwb
38.1004°N, 144.6501°E
North Pacific Ocean
513 km NE of Tokyo, Japan
Time Error: 0.66 s Depth Error: 17.6 km
Num. Stations: 25 Time RMS: 0.33 s
Num. Phases: 25 Azimuth Gap: 76°
Analysis Type: Manual Max. Intensity (MMI):
Effects Type: Seismic
 

MANUALLY REVIEWED LOCATION

Magnitudes

Preferred Magnitude Stations Error Author Action
6.4 mB_BB 15 0.20 NCMS System-search
6.0 Mwp 18 0.10 NCMS System-search
6.0 mb 0 0 NCMS System-search
6.4 M 0 0 NCMS System-search
6.4 Mwc 16 0.10 NCMS System-search
5.0 mb_Lg 1 0.50 NCMS System-search
Emblem-favorite 6.4 Mwb 0 0 NCMS System-search
5.6 Ms_BB 3 0.30 NCMS System-search
5.9 M 52 0.20 NCMS System-search
6.4 Mwb 31 0.10 NCMS System-search
6.0 mb 17 0.10 NCMS System-search

Origin Details

Ellipse Major:12.80 km Min. Distance:4.07° Fixed Depth:no
Ellipse Minor:8.00 km Max. Distance:77.48° Fixed Phase:no
Ellipse Strike:213.0° Fixed Location:no Fixed Time:no
Author:NCMS Location Method:Inversion Event Type:Suspected Earthquake
External Event ID:HYDRA_RED@18525 External Origin ID:HYDRA_RED@37063

Error Ellipse

Azimuth Dip Magnitude Action
Max 41° 40° 36.1 km System-search
Intermediate 157° 27° 21.0 km System-search
Min 271° 37° 14.6 km System-search
Type Traces % DC Misfit/Var. Red. Centroid Best Double Couple Moment Tensor Action
M0 Plane Strike Dip Rake Mrr Mrt Mrp Mtt Mtp Mpp
Ffffffff CMT 16 32% 0.090 2017-09-20 16:37:19.400
36.6094°N, 145.7647°E
36.0 km
4e+18 nt-m NP1
NP2
139.0
279.0
29.0
67.0
126.0
72.0
2.33e+18 -2.69e+18 6.25e+17 -3.23e+18 2.33e+18 8.97e+17 System-search
Ffffffff MT 31 81% 0.66 103.0 km 6e+18 nt-m NP1
NP2
337.0
67.0
82.0
86.0
176.0
8.0
-4.15e+17 5.5e+17 8.15e+17 -3.81e+18 3.84e+18 4.22e+18 System-search
Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
II.ERM.00.BHZ 2017-09-20 16:38:45.720 7e+05 25.90 s 6.7 Mwp 4.07° 344.1° System-search
II.ERM.00.BHZ 2017-09-20 16:39:25.356 4e+03 1.00 s 5.0 mb_Lg 4.07° 344.1° System-search
II.ERM.00.BHZ 2017-09-20 16:40:24.903 1e+05 9.15 s 5.5 Ms_BB 4.07° 344.1° System-search
IU.PET.00.BHZ 2017-09-20 16:41:34.289 7e+04 10.05 s 6.4 Mwp 17.80° 28.5° System-search
IU.PET.00.BHZ 2017-09-20 16:41:40.390 195.4 1.00 s 5.2 mb 17.80° 28.5° System-search
IU.MIDW.00.BHZ 2017-09-20 16:43:53.599 255.8 1.15 s 6.0 mb 33.09° 95.9° System-search
AE.SHM.--.HHZ 2017-09-20 16:48:53.299 4e+03 2.12 s 6.6 mB_BB 73.35° 290.4° System-search
OM.BID.--.HHZ 2017-09-20 16:48:53.640 4e+03 3.46 s 6.6 mB_BB 73.28° 287.1° System-search
OM.MDH.--.HHZ 2017-09-20 16:48:54.650 743.2 2.76 s 5.9 mB_BB 73.64° 289.6° System-search
AE.SHM.--.HHZ 2017-09-20 16:48:55.210 5e+03 6.15 s 6.0 Mwp 73.35° 290.4° System-search
OM.BID.--.HHZ 2017-09-20 16:48:55.329 9e+03 5.81 s 6.2 Mwp 73.28° 287.1° System-search
OM.BID.--.HHZ 2017-09-20 16:48:55.609 205.3 1.12 s 6.1 mb 73.28° 287.1° System-search
AE.MSF.--.HHZ 2017-09-20 16:48:55.910 4e+03 3.72 s 6.6 mB_BB 73.70° 289.7° System-search
OM.SOH.--.HHZ 2017-09-20 16:48:57.630 785.2 3.62 s 5.9 mB_BB 74.13° 288.5° System-search
AE.UMQ.--.HHZ 2017-09-20 16:48:58.069 3e+03 2.08 s 6.4 mB_BB 73.98° 290.1° System-search
OM.ASH.--.HHZ 2017-09-20 16:48:58.420 1e+03 4.00 s 6.1 mB_BB 74.17° 289.2° System-search
DN.NAZ.--.HHZ 2017-09-20 16:48:58.960 1e+03 3.54 s 6.1 mB_BB 74.29° 289.6° System-search
DN.HAT.--.HHZ 2017-09-20 16:48:59.059 2e+03 5.43 s 5.8 Mwp 74.03° 289.3° System-search
DN.HAT.--.HHZ 2017-09-20 16:48:59.400 2e+03 2.26 s 6.3 mB_BB 74.03° 289.3° System-search
AE.UMQ.--.HHZ 2017-09-20 16:48:59.490 4e+03 4.64 s 5.9 Mwp 73.98° 290.1° System-search
DN.FAQ.--.HHZ 2017-09-20 16:48:59.900 6e+03 3.50 s 6.8 mB_BB 74.48° 289.5° System-search
OM.ASH.--.HHZ 2017-09-20 16:49:00.220 3e+03 6.16 s 5.8 Mwp 74.17° 289.2° System-search
DN.NAZ.--.HHZ 2017-09-20 16:49:00.630 3e+03 5.78 s 5.8 Mwp 74.29° 289.6° System-search
DN.FAQ.--.HHZ 2017-09-20 16:49:01.359 1e+04 5.63 s 6.3 Mwp 74.48° 289.5° System-search
AE.ALN.--.HHZ 2017-09-20 16:49:01.849 4e+03 3.40 s 6.6 mB_BB 74.75° 288.8° System-search
AE.SHM.--.HHZ 2017-09-20 16:49:02.710 322.5 0.80 s 6.4 mb 73.35° 290.4° System-search
AE.MSF.--.HHZ 2017-09-20 16:49:03.200 7e+03 11.67 s 6.1 Mwp 73.70° 289.7° System-search
DN.ASU.--.HHZ 2017-09-20 16:49:03.609 1e+04 6.11 s 6.3 Mwp 74.74° 289.5° System-search
AE.AJN.--.HHZ 2017-09-20 16:49:04.039 3e+03 5.16 s 5.8 Mwp 75.03° 289.7° System-search
OM.MDH.--.HHZ 2017-09-20 16:49:04.079 2e+03 13.51 s 5.7 Mwp 73.64° 289.6° System-search
OM.MDH.--.HHZ 2017-09-20 16:49:04.650 38.2 0.72 s 5.5 mb 73.64° 289.6° System-search
AE.SRB.--.HHZ 2017-09-20 16:49:05.000 6e+03 5.31 s 6.1 Mwp 75.21° 290.6° System-search
AE.MSF.--.HHZ 2017-09-20 16:49:05.079 183.4 0.78 s 6.2 mb 73.70° 289.7° System-search
DN.NAZ.--.HHZ 2017-09-20 16:49:06.309 190.0 1.76 s 5.8 mb 74.29° 289.6° System-search
DN.HAT.--.HHZ 2017-09-20 16:49:06.940 122.5 0.80 s 6.0 mb 74.03° 289.3° System-search
AE.UMQ.--.HHZ 2017-09-20 16:49:06.970 153.7 0.88 s 6.0 mb 73.98° 290.1° System-search
OM.SOH.--.HHZ 2017-09-20 16:49:07.130 2e+03 13.63 s 5.8 Mwp 74.13° 288.5° System-search
OM.ASH.--.HHZ 2017-09-20 16:49:08.490 72.7 1.06 s 5.6 mb 74.17° 289.2° System-search
DN.FAQ.--.HHZ 2017-09-20 16:49:08.609 519.9 0.78 s 6.6 mb 74.48° 289.5° System-search
AE.ALN.--.HHZ 2017-09-20 16:49:09.089 7e+03 11.74 s 6.1 Mwp 74.75° 288.8° System-search
DN.ASU.--.HHZ 2017-09-20 16:49:10.569 1e+04 0.72 s 7.0 mB_BB 74.74° 289.5° System-search
DN.ASU.--.HHZ 2017-09-20 16:49:10.720 1e+03 0.78 s 7.0 mb 74.74° 289.5° System-search
AE.ALN.--.HHZ 2017-09-20 16:49:10.869 226.4 0.78 s 6.3 mb 74.75° 288.8° System-search
AE.SRB.--.HHZ 2017-09-20 16:49:11.220 3e+03 3.18 s 6.4 mB_BB 75.21° 290.6° System-search
AE.SRB.--.HHZ 2017-09-20 16:49:13.000 186.4 1.10 s 6.0 mb 75.21° 290.6° System-search
OM.SOH.--.HHZ 2017-09-20 16:49:15.259 54.7 0.88 s 5.6 mb 74.13° 288.5° System-search
AE.MZR.--.HHZ 2017-09-20 16:49:15.700 6e+03 5.59 s 6.1 Mwp 77.06° 289.2° System-search
AE.MZR.--.HHZ 2017-09-20 16:49:16.119 5e+03 2.96 s 6.7 mB_BB 77.06° 289.2° System-search
BH.SAK.--.HHZ 2017-09-20 16:49:16.490 1e+03 2.00 s 6.2 mB_BB 77.48° 293.3° System-search
BH.SAK.--.HHZ 2017-09-20 16:49:17.500 78.5 0.80 s 5.8 mb 77.48° 293.3° System-search
BH.SAK.--.HHZ 2017-09-20 16:49:18.519 3e+03 5.50 s 5.8 Mwp 77.48° 293.3° System-search
AE.MZR.--.HHZ 2017-09-20 16:49:23.309 456.8 0.76 s 6.6 mb 77.06° 289.2° System-search
OM.ASH.--.HHZ 2017-09-20 17:26:56.804 692.7 16.95 s 5.4 Ms_BB 74.17° 289.2° System-search
BH.SAK.--.HHZ 2017-09-20 17:27:23.108 2e+03 18.27 s 6.0 Ms_BB 77.48° 293.3° System-search
Channel Phase Time Time Residual Dir. Event Distance Event Azimuth Automatic? Defined By Action
II.ERM.00.BHZ Pn 2017-09-20 16:38:19.819 -0.20 s 4.07° 344.1° no Time System-search
IU.PET.00.BHZ Pn 2017-09-20 16:41:24.240 -0.90 s 17.80° 28.5° yes Time System-search
IU.MIDW.00.BHZ P 2017-09-20 16:43:53.150 0 s 33.09° 95.9° no Time System-search
IU.TARA.00.BHZ P 2017-09-20 16:45:31.339 -0.10 s 44.84° 137.8° no Time System-search
IU.MAKZ.00.BHZ P 2017-09-20 16:45:40.019 0 s 45.94° 302.0° no Time System-search
IU.COLA.00.BHZ P 2017-09-20 16:45:46.549 0.20 s 46.79° 32.7° no Time System-search
II.KURK.00.BHZ P 2017-09-20 16:45:50.049 -0.50 s 47.31° 307.8° no Time System-search
II.KAPI.00.BHZ P 2017-09-20 16:46:01.930 0 s 48.73° 214.0° no Time System-search
AE.SHM.--.HHZ P 2017-09-20 16:48:49.059 0 s 73.35° 290.4° yes Time System-search
OM.BID.--.HHZ P 2017-09-20 16:48:49.519 0.80 s 73.28° 287.1° yes Time System-search
OM.MDH.--.HHZ P 2017-09-20 16:48:50.569 -0.20 s 73.64° 289.6° yes Time System-search
AE.MSF.--.HHZ P 2017-09-20 16:48:51.529 0.30 s 73.70° 289.7° yes Time System-search
OM.SOH.--.HHZ P 2017-09-20 16:48:53.500 -0.20 s 74.13° 288.5° yes Time System-search
DN.HAT.--.HHZ P 2017-09-20 16:48:53.630 0.50 s 74.03° 289.3° yes Time System-search
OM.ASH.--.HHZ P 2017-09-20 16:48:54.059 0.10 s 74.17° 289.2° yes Time System-search
DN.NAZ.--.HHZ P 2017-09-20 16:48:54.849 0.20 s 74.29° 289.6° yes Time System-search
AE.UMQ.--.HHZ P 2017-09-20 16:48:54.849 2.10 s 73.98° 290.1° yes Time System-search
DN.FAQ.--.HHZ P 2017-09-20 16:48:55.730 0 s 74.48° 289.5° yes Time System-search
AE.ALN.--.HHZ P 2017-09-20 16:48:57.349 0 s 74.75° 288.8° yes Time System-search
DN.ASU.--.HHZ P 2017-09-20 16:48:57.500 0.20 s 74.74° 289.5° yes Time System-search
AE.AJN.--.HHZ P 2017-09-20 16:48:58.880 0 s 75.03° 289.7° no Time System-search
AE.SRB.--.HHZ P 2017-09-20 16:48:59.690 -0.30 s 75.21° 290.6° yes Time System-search
AE.JRN.--.HHZ P 2017-09-20 16:49:05.950 -0.80 s 76.40° 291.1° yes Time System-search
AE.MZR.--.HHZ P 2017-09-20 16:49:10.109 -0.40 s 77.06° 289.2° yes Time System-search
BH.SAK.--.HHZ P 2017-09-20 16:49:13.019 0.20 s 77.48° 293.3° yes Time System-search

Shake Maps

None

Ground Motion

None

Event 20170920-11

Time: 2017-09-20 16:37:19.400
Position:38.1004°N, 144.6501°E
Place:North Pacific Ocean
Major Place:513 km NE of Tokyo, Japan
Depth:25.8 km
Magnitude:6.4 Mwb