ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Mwp 6.0 on date 16-08-2018 and time 20:21:30 (Italy) in region Japan [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Japan [Sea], on

  • 16-08-2018 18:21:30 (UTC)
  • 16-08-2018 20:21:30 (UTC +02:00) Italian time
  • 17-08-2018 04:21:30 (UTC +10:00) local time in the region of the earthquake (Pacific/Saipan)

and geographic coordinates (lat, lon) 23.26, 143.72 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 5.3
Mwp 6.0

Mwpd 6.2
2018-08-16
18:21:30
23.26 143.72 10 2018-08-16
18:57:02
Sala Sismica INGV-Roma 59817001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-16 18:21:30
Latitude 23.26
Longitude 143.72
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 59817001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 9379
Semi-minor axis of confidence ellipse (meter) 4266
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 7571.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89.7121
Number of associated phases, regardless of their use for origin computation 94
Number of defining phases 94
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.12703
Epicentral distance of station closest to the epicenter (degree) 4.07552
Epicentral distance of station farthest from the epicenter (degree) 79.84438
Number of stations at which the event was observed 76
Number of stations from which data was used for origin computation 76
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 16
Type of magnitude Mwpd
Reference to an origin 59817001
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-08-16 18:57:02

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 18
Type of magnitude Mwp
Reference to an origin 59817001
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-08-16 18:57:02

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 59
Type of magnitude mb
Reference to an origin 59817001
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-08-16 18:57:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.BMO.BHZ.00 2018-08-16T18:33:42.75 10.0 positive automatic P 45 79.8061 3.95141 0.178884
US.WVOR.BHZ.00 2018-08-16T18:33:42.20 10.0 positive automatic P 48 79.8444 3.16183 0.174321
US.HAWA.BHZ.00 2018-08-16T18:33:32.53 10.0 positive automatic P 44 77.7869 4.96846 0.196199
GE.DAG.BHZ. 2018-08-16T18:33:36.60 10.0 positive automatic P 356 79.3873 0.273326 0.16148
US.NEW.BHZ.00 2018-08-16T18:33:35.13 10.0 positive automatic P 42 78.6142 2.91826 0.183734
IU.KEV.BHZ.00 2018-08-16T18:33:23.07 10.0 positive automatic P 341 76.8372 0.882418 0.196345
GE.KBS.BHZ.00 2018-08-16T18:33:08.62 10.0 positive automatic P 351 74.3305 0.802158 0.221299
NZ.ODZ.HHZ.10 2018-08-16T18:32:57.62 10.0 negative automatic P 160 72.584 0.0500662 0.255849
NZ.KHZ.HHZ.10 2018-08-16T18:32:47.76 10.0 positive automatic P 157 71.2112 -1.52623 0.257954
KZ.ABKAR.BHZ. 2018-08-16T18:32:33.10 10.0 positive automatic P 316 68.6348 -0.394937 0.283548
II.ARU.BHZ.00 2018-08-16T18:32:30.17 10.0 positive automatic P 324 68.1591 -0.335024 0.28267
CN.INK.BHZ. 2018-08-16T18:32:17.90 10.0 negative automatic P 24 65.8057 2.40786 0.336446
NZ.OUZ.HHZ.10 2018-08-16T18:32:12.14 10.0 negative automatic P 153 64.975 2.02315 0.330616
II.SIMI.BHZ.00 2018-08-16T18:32:05.50 10.0 positive automatic P 303 64.1558 0.745109 0.349836
KZ.KKAR.BHZ. 2018-08-16T18:31:53.48 10.0 positive automatic P 308 62.3716 0.459084 0.360892
II.BRVK.BHZ.00 2018-08-16T18:31:48.97 10.0 positive automatic P 319 61.7621 0.0805952 0.368917
IU.NWAO.BHZ.00 2018-08-16T18:31:46.62 10.0 negative automatic P 205 61.6022 -1.19754 0.379665
IU.MBWA.BHZ.00 2018-08-16T18:30:24.60 10.0 positive automatic P 210 50.1893 -1.40201 0.514625
AU.TOO.BHZ. 2018-08-16T18:31:43.75 10.0 negative automatic P 178 60.8545 0.953149 0.385408
GE.GSI.BHZ. 2018-08-16T18:30:22.87 10.0 negative automatic P 251 49.8037 -0.19208 0.520537
AU.EIDS.BHZ. 2018-08-16T18:30:16.90 10.0 negative automatic P 171 49.1506 -1.19784 0.561124
IU.TIXI.BHZ.00 2018-08-16T18:30:17.92 10.0 negative automatic P 354 49.1059 0.201816 0.568392
II.AAK.BHZ.00 2018-08-16T18:31:34.42 10.0 positive automatic P 307 59.5149 0.62919 0.373779
G.CAN.BHZ.00 2018-08-16T18:31:29.10 10.0 positive automatic P 175 58.7923 0.476774 0.418794
AU.MORW.BHZ. 2018-08-16T18:31:26.15 10.0 positive automatic P 208 58.7168 -1.88088 0.392489
AU.HTT.BHZ. 2018-08-16T18:31:14.30 10.0 positive automatic P 185 56.8747 -0.854327 0.446599
II.KURK.BHZ.00 2018-08-16T18:31:12.52 10.0 positive automatic P 317 56.5862 -0.490165 0.450861
AU.FORT.BHZ. 2018-08-16T18:31:07.60 10.0 positive automatic P 196 56.0865 -1.8442 0.45302
IU.MAKZ.BHZ.00 2018-08-16T18:30:55.42 10.0 positive automatic P 312 54.1472 -0.0896659 0.487688
AU.ARMA.BHZ. 2018-08-16T18:30:55.65 10.0 positive automatic P 172 54.2134 -0.430981 0.504261
II.MSVF.BHZ.00 2018-08-16T18:30:50.27 10.0 negative automatic P 138 52.974 3.3385 0.505919
G.DZM.BHZ.00 2018-08-16T18:30:29.25 10.0 positive automatic P 152 50.4397 1.236 0.55945
AU.WRKA.BHZ. 2018-08-16T18:30:26.95 10.0 positive automatic P 198 50.5585 -1.92235 0.498165
AU.QLP.BHZ. 2018-08-16T18:30:21.55 10.0 negative automatic P 179 49.8469 -1.86322 0.54975
ND.KOUNC.BHZ.00 2018-08-16T18:30:12.42 10.0 positive automatic P 154 48.181 1.80771 0.545791
GE.MMRI.BHZ. 2018-08-16T18:28:49.02 10.0 positive automatic P 216 38.1937 -0.873345 0.699193
IU.ULN.BHZ.00 2018-08-16T18:28:47.47 10.0 positive automatic P 319 38.066 -1.59489 0.749273
AU.COEN.BHZ. 2018-08-16T18:28:42.02 10.0 positive automatic P 181 37.2225 0.317715 0.765272
IN.SHL.HHZ. 2018-08-16T18:30:01.16 10.0 positive automatic P 284 46.9773 -0.0783163 0.593285
MY.SBM.BHZ. 2018-08-16T18:28:38.97 10.0 positive automatic P 240 36.9172 -0.12942 0.706844
TM.UBPT.BHZ. 2018-08-16T18:30:00.81 10.0 positive automatic PP 265 36.8614 -1.7108 0
RM.SLV.BHZ. 2018-08-16T18:28:38.87 10.0 negative automatic P 275 36.7696 0.960054 0.791928
II.KAPI.BHZ.00 2018-08-16T18:28:37.27 10.0 positive automatic P 223 36.6986 0.0273294 0.832021
MY.KUM.BHZ. 2018-08-16T18:29:47.77 10.0 positive automatic P 253 45.1914 0.590634 0.607082
MY.IPM.BHZ. 2018-08-16T18:29:47.72 10.0 positive automatic P 252 45.2452 0.0811586 0.606179
MY.KOM.BHZ. 2018-08-16T18:29:40.37 10.0 positive automatic P 247 44.1813 1.25651 0
IU.CTAO.BHZ.00 2018-08-16T18:29:32.32 10.0 positive automatic P 177 43.4198 -0.725983 0.682708
GE.JAGI.BHZ. 2018-08-16T18:29:28.97 10.0 negative automatic P 226 42.927 -0.062607 0.645699
IU.PMG.BHZ.00 2018-08-16T18:28:03.02 10.0 positive automatic P 174 32.8395 -0.849665 0.851118
IU.ADK.BHZ.00 2018-08-16T18:29:22.27 10.0 positive automatic P 36 41.608 3.99795 0.683942
IU.YAK.BHZ.00 2018-08-16T18:29:03.07 10.0 positive automatic P 350 39.9288 -1.3415 0.668933
MY.KSM.BHZ. 2018-08-16T18:28:58.82 10.0 negative automatic P 241 39.0293 1.92519 0.714962
GE.SOEI.BHZ. 2018-08-16T18:28:47.57 10.0 negative automatic P 212 38.1079 -1.75122 0.748482
AU.MTN.BHZ. 2018-08-16T18:28:46.92 10.0 positive automatic P 200 38.1473 -2.5794 0.802452
AU.KDU.BHZ. 2018-08-16T18:28:44.15 10.0 negative automatic P 198 37.5946 -0.670289 0.813669
IU.MA2.BHZ.00 2018-08-16T18:28:40.62 10.0 negative automatic P 6 36.6504 3.78053 0
MY.KKM.BHZ. 2018-08-16T18:27:53.42 10.0 positive automatic P 241 31.575 0.516326 0.857249
GE.LUWI.BHZ. 2018-08-16T18:27:51.97 10.0 positive automatic P 223 31.7132 -2.00694 0.651731
MY.LDM.BHZ. 2018-08-16T18:27:43.42 10.0 positive automatic P 237 30.2991 1.88704 0.94596
GE.SANI.BHZ. 2018-08-16T18:27:42.37 10.0 positive automatic P 217 30.6383 -2.13336 0.876039
GE.TNTI.BHZ. 2018-08-16T18:27:16.37 10.0 positive automatic P 218 27.526 -0.48841 0.43956
IU.YSS.BHZ.00 2018-08-16T18:26:44.20 10.0 positive automatic pP 358 23.7073 1.94987 0.909091
IU.INCN.BHZ.00 2018-08-16T18:26:08.72 10.0 negative automatic P 318 20.4156 1.4028 0.930233
II.ERM.BHZ.00 2018-08-16T18:25:53.67 10.0 positive automatic sP 359 18.7571 4.47877 0.97561
JP.YOJ.BHZ. 2018-08-16T18:25:52.85 10.0 negative automatic P 278 18.9548 1.49162 0.930233
JP.JTU.BHZ. 2018-08-16T18:25:27.25 10.0 positive automatic P 315 16.8193 1.58086 0.909091
JP.JSD.BHZ. 2018-08-16T18:25:03.70 10.0 positive automatic P 344 15.4965 -4.98335 0.888889
JP.JNU.BHZ. 2018-08-16T18:25:02.30 10.0 positive automatic P 314 14.9863 0.271028 0.930233
JP.JOW.BHZ. 2018-08-16T18:24:57.65 10.0 positive automatic P 288 14.4287 3.27951 0.952381
JP.JMM.BHZ. 2018-08-16T18:24:56.45 10.0 negative automatic P 351 14.8188 -3.2164 0.909091
IU.MAJO.BHZ.00 2018-08-16T18:24:46.92 10.0 positive automatic P 342 14.1082 -3.11306 0.952381
JP.JMN.BHZ. 2018-08-16T18:24:41.80 10.0 positive automatic P 323 13.562 -0.799288 0.384615
JP.JGF.BHZ. 2018-08-16T18:24:40.30 10.0 negative automatic P 337 13.5185 -1.71344 0.930233
G.INU.BHZ.00 2018-08-16T18:24:37.81 10.0 negative automatic P 336 13.4102 -2.64339 0.869565
JP.JMZ.BHZ. 2018-08-16T18:24:20.30 10.0 positive automatic P 285 11.6425 4.01841 0.952381
JP.JCJ.BHZ. 2018-08-16T18:22:30.40 10.0 positive automatic P 340 4.0755 -2.08621 0.833333
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download