Earthquake 20170831-8

2017-08-31 22:57:39.910 26.9 km 5.6 Mwb
0.3446°N, 124.5937°E
Flores Sea
1186 km SE of Bandar Seri Begawan, Brunei
Time Error: 1.46 s Depth Error: 25.8 km
Num. Stations: 31 Time RMS: 0.72 s
Num. Phases: 31 Azimuth Gap: 103°
Analysis Type: Manual Max. Intensity (MMI):
Effects Type: Seismic
 

MANUALLY REVIEWED LOCATION

Magnitudes

Preferred Magnitude Stations Error Author Action
5.4 ML 2 0.30 NCMS System-search
4.2 mb_Lg 1 0.50 NCMS System-search
4.7 Ms_BB 1 0.40 NCMS System-search
5.7 Mwp 9 0.10 NCMS System-search
Emblem-favorite 5.6 Mwb 0 0 NCMS System-search
5.6 M 0 0 NCMS System-search
5.7 mb 29 0.10 NCMS System-search
6.1 mB_BB 16 0.20 NCMS System-search
5.6 Mwb 28 0.10 NCMS System-search
5.7 M 81 0.20 NCMS System-search

Origin Details

Ellipse Major:14.90 km Min. Distance:7.19° Fixed Depth:no
Ellipse Minor:12.10 km Max. Distance:156.95° Fixed Phase:no
Ellipse Strike:132.0° Fixed Location:no Fixed Time:no
Author:NCMS Location Method:Inversion Event Type:Earthquake
External Event ID:HYDRA_RED@18210 External Origin ID:HYDRA_RED@36456

Error Ellipse

Azimuth Dip Magnitude Action
Max 149° 50° 48.9 km System-search
Intermediate 251° 29.5 km System-search
Min 348° 38° 17.2 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 MT 28 93% 0.64 27.0 km 3e+17 nt-m NP1
NP2
7.0
101.0
73.0
76.0
165.0
18.0
4.71e+16 8.26e+16 4.39e+16 5.67e+16 2.44e+17 -1.04e+17 System-search
Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
II.KAPI.00.BHZ 2017-08-31 23:00:21.410 2e+04 57.40 s 5.7 Mwp 7.19° 222.2° System-search
II.KAPI.00.BH2 2017-08-31 23:01:06.559 562.2 1.05 s 5.4 ML 7.19° 222.2° System-search
II.KAPI.00.BHZ 2017-08-31 23:01:34.759 243.2 0.80 s 4.2 mb_Lg 7.19° 222.2° System-search
II.KAPI.00.BHZ 2017-08-31 23:02:42.959 5e+03 16.65 s 4.7 Ms_BB 7.19° 222.2° System-search
IU.NWAO.00.BHZ 2017-08-31 23:04:21.309 47.4 1.10 s 5.3 mb 33.81° 191.2° System-search
II.NIL.00.BHZ 2017-08-31 23:07:36.109 619.5 2.65 s 5.2 Mwp 58.36° 310.1° System-search
II.NIL.00.BHZ 2017-08-31 23:07:36.410 1e+03 1.40 s 6.1 mB_BB 58.36° 310.1° System-search
II.NIL.00.BHZ 2017-08-31 23:07:36.759 219.2 1.50 s 6.0 mb 58.36° 310.1° System-search
IU.PET.00.BHZ 2017-08-31 23:07:42.839 184.9 1.40 s 6.0 mb 59.65° 23.1° System-search
IU.MAKZ.00.BHZ 2017-08-31 23:07:43.589 194.5 1.35 s 6.1 mb 59.35° 327.3° System-search
IU.MAKZ.00.BHZ 2017-08-31 23:07:43.839 815.1 0.50 s 6.0 mB_BB 59.35° 327.3° System-search
II.AAK.00.BHZ 2017-08-31 23:07:58.910 2e+03 1.10 s 6.4 mB_BB 61.49° 319.9° System-search
II.AAK.00.BHZ 2017-08-31 23:07:59.359 258.5 1.00 s 6.3 mb 61.49° 319.9° System-search
IU.KBL.--.BHZ 2017-08-31 23:08:00.865 960.1 1.05 s 6.1 mB_BB 61.94° 309.5° System-search
IU.KBL.--.BHZ 2017-08-31 23:08:01.339 87.2 0.90 s 5.9 mb 61.94° 309.5° System-search
IU.KBL.--.BHZ 2017-08-31 23:08:02.964 641.7 5.13 s 5.2 Mwp 61.94° 309.5° System-search
IU.MAKZ.00.BHZ 2017-08-31 23:08:03.990 2e+03 23.75 s 5.6 Mwp 59.35° 327.3° System-search
II.KURK.00.BHZ 2017-08-31 23:08:10.859 2e+03 0.70 s 6.4 mB_BB 63.49° 329.3° System-search
II.KURK.00.BHZ 2017-08-31 23:08:11.259 179.7 0.70 s 6.3 mb 63.49° 329.3° System-search
II.AAK.00.BHZ 2017-08-31 23:08:27.660 8e+03 31.40 s 6.1 Mwp 61.49° 319.9° System-search
II.BRVK.00.BHZ 2017-08-31 23:08:46.710 940.0 1.20 s 6.1 mB_BB 69.09° 328.3° System-search
II.KURK.00.BHZ 2017-08-31 23:08:47.109 1e+03 39.55 s 5.5 Mwp 63.49° 329.3° System-search
II.BRVK.00.BHZ 2017-08-31 23:08:47.210 134.1 1.10 s 6.0 mb 69.09° 328.3° System-search
OM.BID.--.HHZ 2017-08-31 23:08:48.900 33.7 0.88 s 5.5 mb 68.35° 295.1° System-search
OM.ASH.--.HHZ 2017-08-31 23:08:55.359 6.5 0.76 s 4.8 mb 70.41° 296.0° System-search
AE.ALN.--.HHZ 2017-08-31 23:08:56.099 526.1 1.66 s 5.8 mB_BB 70.58° 295.3° System-search
AE.ALN.--.HHZ 2017-08-31 23:08:56.480 35.1 0.64 s 5.6 mb 70.58° 295.3° System-search
DN.FAQ.--.HHZ 2017-08-31 23:08:56.900 68.8 0.92 s 5.8 mb 70.83° 296.0° System-search
DN.HAT.--.HHZ 2017-08-31 23:08:56.920 9.4 0.82 s 4.9 mb 70.36° 296.2° System-search
DN.ASU.--.HHZ 2017-08-31 23:08:58.980 2e+03 1.68 s 6.3 mB_BB 71.05° 295.9° System-search
DN.ASU.--.HHZ 2017-08-31 23:08:58.990 367.1 1.54 s 6.3 mb 71.05° 295.9° System-search
AE.MSF.--.HHZ 2017-08-31 23:08:59.289 30.0 1.08 s 5.3 mb 70.42° 296.8° System-search
II.UOSS.10.BHZ 2017-08-31 23:09:01.859 5.0 0.80 s 4.7 mb 70.32° 296.3° System-search
AE.SRB.--.HHZ 2017-08-31 23:09:03.130 46.1 0.66 s 5.6 mb 72.12° 296.3° System-search
OM.SOH.--.HHZ 2017-08-31 23:09:06.000 5.3 0.88 s 4.7 mb 69.89° 295.5° System-search
AE.MZR.--.HHZ 2017-08-31 23:09:07.269 738.2 0.80 s 5.9 mB_BB 72.51° 293.9° System-search
AE.MZR.--.HHZ 2017-08-31 23:09:07.710 58.3 0.76 s 5.7 mb 72.51° 293.9° System-search
DN.HAT.--.HHZ 2017-08-31 23:09:10.759 111.3 5.06 s 5.1 mB_BB 70.36° 296.2° System-search
II.BRVK.00.BHZ 2017-08-31 23:09:25.559 2e+03 41.95 s 5.7 Mwp 69.09° 328.3° System-search
BH.SAK.--.HHZ 2017-08-31 23:09:26.599 22.9 0.94 s 5.2 mb 75.53° 296.6° System-search
DN.NAZ.--.HHZ 2017-08-31 23:09:36.059 5.7 0.80 s 4.7 mb 70.81° 296.3° System-search
GO.AKH.--.HHZ 2017-08-31 23:10:06.130 1e+03 1.06 s 6.2 mB_BB 83.09° 311.5° System-search
GO.AKH.--.HHZ 2017-08-31 23:10:06.630 116.1 0.90 s 6.0 mb 83.09° 311.5° System-search
II.KIV.00.BHZ 2017-08-31 23:10:09.109 2e+03 2.00 s 6.4 mB_BB 83.93° 314.0° System-search
II.KIV.00.BHZ 2017-08-31 23:10:10.509 108.1 0.90 s 6.1 mb 83.93° 314.0° System-search
II.KIV.00.BHZ 2017-08-31 23:10:13.309 2e+03 5.30 s 5.7 Mwp 83.93° 314.0° System-search
IU.GNI.00.BHZ 2017-08-31 23:10:20.259 66.8 0.90 s 5.7 mb 82.02° 310.4° System-search
GO.AKH.--.HHZ 2017-08-31 23:10:23.710 2e+03 18.44 s 5.7 Mwp 83.09° 311.5° System-search
IU.KMBO.00.BHZ 2017-08-31 23:10:27.109 1e+03 1.40 s 6.3 mB_BB 87.35° 268.9° System-search
IU.KMBO.00.BHZ 2017-08-31 23:10:27.609 147.9 1.20 s 6.1 mb 87.35° 268.9° System-search
II.OBN.00.BHZ 2017-08-31 23:10:30.210 2e+03 0.90 s 6.5 mB_BB 88.59° 324.9° System-search
II.OBN.00.BHZ 2017-08-31 23:10:30.710 173.1 0.90 s 6.4 mb 88.59° 324.9° System-search
GE.EIL.--.BHZ 2017-08-31 23:10:36.339 514.7 1.60 s 6.0 mB_BB 89.52° 299.5° System-search
GE.EIL.--.BHZ 2017-08-31 23:10:36.789 79.0 1.40 s 5.8 mb 89.52° 299.5° System-search
IU.ANTO.00.BHZ 2017-08-31 23:10:42.714 102.8 1.40 s 5.3 mB_BB 91.17° 309.7° System-search
IU.ANTO.00.BHZ 2017-08-31 23:10:43.190 15.5 1.25 s 5.2 mb 91.17° 309.7° System-search
IU.LSZ.00.BHZ 2017-08-31 23:11:06.210 31.8 0.90 s 5.8 mb 96.27° 254.8° System-search
Channel Phase Time Time Residual Dir. Event Distance Event Azimuth Automatic? Defined By Action
II.KAPI.00.BHZ Pn 2017-08-31 22:59:24.009 0.60 s 7.19° 222.2° yes Time System-search
IU.NWAO.00.BHZ P 2017-08-31 23:04:20.259 0.40 s 33.81° 191.2° yes Time System-search
II.NIL.00.BHZ P 2017-08-31 23:07:33.460 0.30 s 58.36° 310.1° yes Time System-search
IU.MAKZ.00.BHZ P 2017-08-31 23:07:40.240 0.50 s 59.35° 327.3° yes Time System-search
IU.PET.00.BHZ P 2017-08-31 23:07:41.690 0.10 s 59.65° 23.1° yes Time System-search
II.AAK.00.BHZ P 2017-08-31 23:07:56.259 1.60 s 61.49° 319.9° yes Time System-search
IU.KBL.--.BHZ P 2017-08-31 23:07:57.839 -0.10 s 61.94° 309.5° yes Time System-search
II.KURK.00.BHZ P 2017-08-31 23:08:07.559 0 s 63.49° 329.3° yes Time System-search
OM.BID.--.HHZ P 2017-08-31 23:08:38.650 -0.80 s 68.35° 295.1° yes Time System-search
II.BRVK.00.BHZ P 2017-08-31 23:08:43.609 0.10 s 69.09° 328.3° yes Time System-search
OM.SOH.--.HHZ P 2017-08-31 23:08:49.490 0.50 s 69.89° 295.5° yes Time System-search
DN.HAT.--.HHZ P 2017-08-31 23:08:51.210 -0.70 s 70.36° 296.2° yes Time System-search
OM.ASH.--.HHZ P 2017-08-31 23:08:51.819 -0.40 s 70.41° 296.0° no Time System-search
II.UOSS.10.BHZ P 2017-08-31 23:08:52.009 0.40 s 70.32° 296.3° yes Time System-search
AE.MSF.--.HHZ P 2017-08-31 23:08:52.380 0.10 s 70.42° 296.8° no Time System-search
AE.ALN.--.HHZ P 2017-08-31 23:08:52.460 -0.80 s 70.58° 295.3° no Time System-search
DN.FAQ.--.HHZ P 2017-08-31 23:08:54.200 -0.60 s 70.83° 296.0° yes Time System-search
DN.NAZ.--.HHZ P 2017-08-31 23:08:54.910 0.30 s 70.81° 296.3° yes Time System-search
DN.ASU.--.HHZ P 2017-08-31 23:08:56.089 0 s 71.05° 295.9° no Time System-search
AE.SRB.--.HHZ P 2017-08-31 23:09:01.589 -0.90 s 72.12° 296.3° yes Time System-search
AE.MZR.--.HHZ P 2017-08-31 23:09:04.089 -0.80 s 72.51° 293.9° yes Time System-search
BH.SAK.--.HHZ P 2017-08-31 23:09:22.009 -0.50 s 75.53° 296.6° no Time System-search
IU.GNI.00.BHZ P 2017-08-31 23:09:58.059 0 s 82.02° 310.4° yes Time System-search
GO.AKH.--.HHZ P 2017-08-31 23:10:05.269 1.60 s 83.09° 311.5° yes Time System-search
II.KIV.00.BHZ P 2017-08-31 23:10:08.009 0.20 s 83.93° 314.0° yes Time System-search
IU.KMBO.00.BHZ P 2017-08-31 23:10:26.009 0.30 s 87.35° 268.9° yes Time System-search
II.OBN.00.BHZ P 2017-08-31 23:10:29.259 -1.10 s 88.59° 324.9° yes Time System-search
GE.EIL.--.BHZ P 2017-08-31 23:10:35.240 0 s 89.52° 299.5° yes Time System-search
IU.ANTO.00.BHZ P 2017-08-31 23:10:42.140 -0.70 s 91.17° 309.7° yes Time System-search
IU.LSZ.00.BHZ P 2017-08-31 23:11:05.059 -1.80 s 96.27° 254.8° yes Time System-search
IU.OTAV.00.BHZ PKPdf 2017-08-31 23:17:32.210 -2.60 s 156.95° 88.6° yes Time System-search

Shake Maps

None

Ground Motion

Station PGA PGA Time PGV PGV Time PGD PGD Time RSA @ 0.3s RSA @ 1.0s RSA @ 3.0s Action
II.KAPI.00.BH1 0.002697 cm/s2 2017-08-31 23:00:05.657 0.000263 cm/s 2017-08-31 22:59:59.907 0.000081 cm 2017-08-31 23:00:26.507 0.023206 cm/s2 0.008073 cm/s2 0.001616 cm/s2 System-search
II.KAPI.00.BH2 0.002464 cm/s2 2017-08-31 23:00:05.307 0.00024 cm/s 2017-08-31 23:00:05.407 0.000085 cm 2017-08-31 23:00:14.157 0.01468 cm/s2 0.009432 cm/s2 0.000968 cm/s2 System-search
II.KAPI.00.BHZ 0.002948 cm/s2 2017-08-31 22:59:56.957 0.000348 cm/s 2017-08-31 23:00:00.257 0.000089 cm 2017-08-31 23:00:16.707 0.015034 cm/s2 0.006174 cm/s2 0.001573 cm/s2 System-search
IU.DAV.00.BH1 0.016914 cm/s2 2017-08-31 23:00:00.950 0.003212 cm/s 2017-08-31 23:00:00.075 0.000901 cm 2017-08-31 23:00:00.475 0.028635 cm/s2 0.039714 cm/s2 0.010316 cm/s2 System-search
IU.DAV.00.BH2 0.018084 cm/s2 2017-08-31 22:59:54.100 0.002647 cm/s 2017-08-31 22:59:53.825 0.000693 cm 2017-08-31 22:59:52.250 0.031687 cm/s2 0.053603 cm/s2 0.011027 cm/s2 System-search
IU.DAV.00.BHZ 0.011815 cm/s2 2017-08-31 23:00:06.050 0.001348 cm/s 2017-08-31 22:59:57.850 0.00054 cm 2017-08-31 22:59:53.350 0.031549 cm/s2 0.027441 cm/s2 0.006584 cm/s2 System-search

Event 20170831-8

Time: 2017-08-31 22:57:39.910
Position:0.3446°N, 124.5937°E
Place:Flores Sea
Major Place:1186 km SE of Bandar Seri Begawan, Brunei
Depth:26.9 km
Magnitude:5.6 Mwb