Earthquake with magnitude of mb 6.2 on date 18-09-2015 and time 22:01:43 (Italy) in region North Pacific Ocean [Sea]

A magnitude mb 6.2 earthquake occured in region: North Pacific Ocean [Sea], on

  • 18-09-2015 20:01:43 (UTC)
  • 18-09-2015 22:01:43 (UTC +02:00) Italian time
  • 19-09-2015 08:01:43 (UTC +12:00) local time in the region of the earthquake (Pacific/Wake)

and geographic coordinates (lat, lon) 31.6620, 159.5060 at 1 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 6.2
Mwp 5.5
2015-09-18
20:01:43
31.6617 159.506 1 2015-09-18
20:58:39
Sala Sismica INGV-Roma 21454231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-09-18 20:01:43
Latitude 31.6617
Longitude 159.5060
Depth (km) 1 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 21454231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 20257
Semi-minor axis of confidence ellipse (meter) 13956
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 33
Circular confidence region, given by single value of horizontal uncertainty (meter) 16351.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139.723
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 6.05104
Epicentral distance of station closest to the epicenter (degree) 16.54207
Epicentral distance of station farthest from the epicenter (degree) 137.53294
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Mwp:5.5

Field Value
Value 5.5
Uncertainty 0.0
Num. used stations 1
Type of magnitude Mwp
Reference to an origin 21454231
Agency INGV
Autore early-est_ee1.1.8
Time of creation (UTC) 2015-09-18 20:58:40

mb:6.2

Field Value
Value 6.2
Uncertainty 0.4
Num. used stations 9
Type of magnitude mb
Reference to an origin 21454231
Agency INGV
Autore early-est_ee1.1.8
Time of creation (UTC) 2015-09-18 20:58:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.PMSA.BHZ.00 2015-09-18T20:23:47.42 10.0 positive automatic PP 154 137.5329 -5.93375 0
DK.NOR.BHZ. 2015-09-18T20:22:27.25 10.0 negative automatic SKSac 359 66.7133 -4.11537 0
AU.RABL.BHZ. 2015-09-18T20:19:08.07 10.0 positive automatic ScS 192 36.5265 2.50115 0
IU.LCO.BHZ.00 2015-09-18T20:17:59.27 10.0 positive automatic Pdiff 100 136.9630 -14.2736 0
IM.TX31.BHZ. 2015-09-18T20:13:49.85 10.0 positive automatic P 61 80.2697 -4.748 0.176686
US.WVOR.BHZ.00 2015-09-18T20:13:00.43 10.0 negative automatic PcP 55 63.6924 9.01201 0
BK.CMB.BHZ.00 2015-09-18T20:12:18.37 10.0 positive automatic P 60 63.9837 1.33785 0.365046
AU.MANU.BHZ. 2015-09-18T20:08:40.30 10.0 positive automatic P 201 35.6195 -0.911834 0.854494
JP.JWT.BHZ. 2015-09-18T20:06:27.20 10.0 negative automatic P 287 20.3789 7.14747 0.97561
G.INU.BHZ.00 2015-09-18T20:06:09.01 10.0 negative automatic P 287 19.0566 3.40434 0.97561
JP.JGF.BHZ. 2015-09-18T20:06:04.45 10.0 positive automatic P 288 18.8160 1.41144 0.909091
JP.JSD.BHZ. 2015-09-18T20:05:57.70 10.0 positive automatic P 296 18.5147 -1.94892 0.930233
IU.MAJO.BHZ.00 2015-09-18T20:05:51.87 10.0 positive automatic P 291 18.2577 -4.7554 0.97561
JP.JMM.BHZ. 2015-09-18T20:05:39.05 10.0 positive automatic P 297 16.5421 3.88375 0.930233
JP.JYT.BHZ. 2015-09-18T20:05:28.45 10.0 negative automatic P 291 16.6283 -7.79852 0.97561
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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