INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Mwp 6.1 on date 18-09-2018 and time 13:58:03 (Italy) in region Solomon Is. [Sea]

A magnitude Mwp 6.1 earthquake occured in region: Solomon Is. [Sea], on

  • 18-09-2018 11:58:03 (UTC)
  • 18-09-2018 13:58:03 (UTC +02:00) Italian time
  • 18-09-2018 22:58:03 (UTC +11:00) local time in the region of the earthquake (Pacific/Bougainville)

and geographic coordinates (lat, lon) -8.35, 157.21 at 113 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 6.1

Mwpd 6.3
2018-09-18
11:58:03
-8.35 157.21 113 2018-09-18
12:14:38
Sala Sismica INGV-Roma 61066231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-18 11:58:03
Latitude -8.35
Longitude 157.21
Depth (km) 113 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 61066231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 10389
Semi-minor axis of confidence ellipse (meter) 8947
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 10403.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63.9874
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 70
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.75763
Epicentral distance of station closest to the epicenter (degree) 9.98702
Epicentral distance of station farthest from the epicenter (degree) 96.43645
Number of stations at which the event was observed 69
Number of stations from which data was used for origin computation 69
Magnitudes information

Mwp:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 34
Type of magnitude Mwp
Reference to an origin 61066231
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-18 12:14:38

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 29
Type of magnitude Mwpd
Reference to an origin 61066231
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-18 12:14:38

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 55
Type of magnitude mb
Reference to an origin 61066231
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-09-18 12:14:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.HWUT.BHZ.00 2018-09-18T12:11:23.15 10.0 positive automatic PcP 49 96.4365 3.82664 0
US.DUG.BHZ.00 2018-09-18T12:11:17.55 10.0 negative automatic PcP 50 95.3522 3.10673 0
US.HLID.BHZ.00 2018-09-18T12:11:14.05 10.0 negative automatic P 47 94.5667 3.37699 0.0646851
US.ELK.BHZ.00 2018-09-18T12:11:10.03 10.0 negative automatic P 49 93.5901 3.75957 0.0711481
NN.PRN.HHZ. 2018-09-18T12:11:08.77 10.0 positive automatic P 53 93.2717 4.09775 0.073055
UW.BRAN.BHZ. 2018-09-18T12:11:05.43 10.0 negative automatic PcP 44 92.9273 1.80776 0
US.BMO.BHZ.00 2018-09-18T12:11:04.08 10.0 positive automatic P 45 92.697 2.10024 0.0747808
US.TPNV.BHZ.00 2018-09-18T12:11:03.79 10.0 positive automatic P 53 92.2605 3.76051 0.0774354
US.WVOR.BHZ.00 2018-09-18T12:10:58.45 10.0 positive automatic P 47 91.3443 2.6948 0.0882913
CN.INK.BHZ. 2018-09-18T12:10:52.23 10.0 negative automatic PcP 20 90.304 0.430873 0
BK.CMB.BHZ.00 2018-09-18T12:10:49.35 10.0 negative automatic P 51 89.2163 3.60802 0.0929158
AT.SKAG.BHZ. 2018-09-18T12:10:33.32 10.0 negative automatic P 28 86.1137 2.49613 0.120296
IU.MAKZ.BHZ.00 2018-09-18T12:10:31.67 10.0 negative automatic P 318 86.168 0.499271 0.106893
US.EGAK.BHZ.00 2018-09-18T12:10:31.50 10.0 negative automatic P 22 86.0382 1.01816 0.117579
IU.COLA.BHZ.00 2018-09-18T12:10:18.35 10.0 positive automatic P 20 83.6813 -0.322166 0.142321
IU.TIXI.BHZ.00 2018-09-18T12:10:10.77 10.0 positive automatic P 351 82.1446 0.0617824 0.155547
IU.QSPA.BHZ.00 2018-09-18T12:10:10.42 10.0 positive automatic PcP 180 81.581 2.17781 0.149842
GE.MALK.BHZ. 2018-09-18T12:09:54.87 10.0 positive automatic PcP 280 78.197 5.33222 0.179402
II.PALK.BHZ.00 2018-09-18T12:09:52.87 10.0 positive automatic PcP 279 77.8402 5.2414 0.182674
II.KDAK.BHZ.00 2018-09-18T12:09:46.50 10.0 positive automatic P 25 77.5922 0.296737 0.191343
IU.BILL.BHZ.00 2018-09-18T12:09:41.17 10.0 positive automatic P 4 76.6906 -0.0179996 0.202411
IN.SHL.HHZ. 2018-09-18T12:09:15.14 10.0 positive automatic P 300 71.9661 1.38289 0.253162
IU.ULN.BHZ.00 2018-09-18T12:09:12.02 10.0 positive automatic P 327 71.478 0.90503 0.251565
IU.SBA.BHZ.00 2018-09-18T12:09:03.32 10.0 negative automatic P 178 69.6763 3.41084 0.268593
IU.CASY.BHZ.00 2018-09-18T12:08:37.77 10.0 positive automatic P 199 66.0447 0.616211 0.0981306
GE.GSI.BHZ. 2018-09-18T12:08:00.23 10.0 positive automatic P 276 60.2152 1.10173 0.381083
MY.IPM.BHZ. 2018-09-18T12:07:40.32 10.0 negative automatic P 281 57.4782 0.550751 0.362048
IU.YSS.BHZ.00 2018-09-18T12:07:34.20 10.0 positive automatic P 348 56.7782 -0.630485 0.458764
RM.DLV.BHZ. 2018-09-18T12:07:04.92 10.0 negative automatic P 292 52.5229 0.622744 0.339432
JP.JTM.BHZ. 2018-09-18T12:06:53.80 10.0 negative automatic P 344 51.3361 -1.51044 0
JP.JTU.BHZ. 2018-09-18T12:06:46.25 10.0 negative automatic P 330 50.3049 -1.32647 0.363
JP.JNU.BHZ. 2018-09-18T12:06:31.55 10.0 positive automatic P 330 48.4464 -1.98505 0.566321
IU.MAJO.BHZ.00 2018-09-18T12:06:29.87 10.0 positive automatic P 339 48.3078 -2.58166 0.581819
MY.KSM.BHZ. 2018-09-18T12:06:29.02 10.0 negative automatic P 280 47.7733 0.744903 0.184103
JP.JGF.BHZ. 2018-09-18T12:06:26.35 10.0 negative automatic P 338 47.7676 -1.97194 0.564674
G.INU.BHZ.00 2018-09-18T12:06:25.71 10.0 negative automatic P 338 47.663 -1.72816 0.579241
JP.JMN.BHZ. 2018-09-18T12:06:24.85 10.0 positive automatic P 333 47.5491 -1.77958 0.608806
MY.SBM.BHZ. 2018-09-18T12:06:15.97 10.0 negative automatic P 282 46.1464 0.308898 0.443426
JP.JOW.BHZ. 2018-09-18T12:06:05.10 10.0 positive automatic P 322 44.9997 -1.52974 0.653988
AU.MORW.BHZ. 2018-09-18T12:05:57.67 10.0 positive automatic P 236 43.8209 0.404159 0.659719
GE.JAGI.BHZ. 2018-09-18T12:05:45.67 10.0 negative automatic P 267 42.5724 -1.53703 0.682264
MY.LDM.BHZ. 2018-09-18T12:05:34.52 10.0 negative automatic P 288 40.9057 0.881753 0.471645
NZ.KHZ.HHZ.10 2018-09-18T12:05:01.50 10.0 negative automatic P 160 36.9735 0.644314 0.814551
AU.FORT.BHZ. 2018-09-18T12:04:45.27 10.0 positive automatic P 226 35.2479 -0.908983 0.862268
NZ.URZ.HHZ.10 2018-09-18T12:04:45.37 10.0 negative automatic P 152 34.8754 2.39718 0.792755
GE.LUWI.BHZ. 2018-09-18T12:04:44.77 10.0 negative automatic P 280 35.0647 0.193127 0.771972
GE.MMRI.BHZ. 2018-09-18T12:04:39.72 10.0 negative automatic P 267 34.5783 -0.705119 0.816613
GE.SOEI.BHZ. 2018-09-18T12:04:24.77 10.0 positive automatic P 265 32.5511 1.76289 0.837981
AU.WRKA.BHZ. 2018-09-18T12:04:18.32 10.0 negative automatic P 235 32.2076 -1.60644 0.916017
GE.SANI.BHZ. 2018-09-18T12:04:15.17 10.0 negative automatic P 280 31.7059 -0.262333 0.836156
AU.TOO.BHZ. 2018-09-18T12:04:10.60 10.0 negative automatic P 198 31.0889 0.476147 0.918078
AU.HTT.BHZ. 2018-09-18T12:04:02.60 10.0 positive automatic P 211 30.2336 -0.00698796 0.874607
AU.MILA.BHZ. 2018-09-18T12:03:58.10 10.0 positive automatic P 193 29.6236 0.867756 0.909091
G.CAN.BHZ.00 2018-09-18T12:03:43.25 10.0 positive automatic P 194 27.9999 0.426802 0.930233
AU.MTN.BHZ. 2018-09-18T12:03:24.62 10.0 positive automatic P 258 26.0102 -0.301608 0.481928
GE.FAKI.BHZ. 2018-09-18T12:03:20.27 10.0 positive automatic P 281 25.4158 0.717636 0.909091
AU.KDU.BHZ. 2018-09-18T12:03:12.05 10.0 positive automatic P 258 24.694 -0.948345 0.930233
AU.ARMA.BHZ. 2018-09-18T12:02:53.90 10.0 positive automatic P 193 22.6802 -0.912658 0.930233
II.MSVF.BHZ.00 2018-09-18T12:02:53.62 10.0 negative automatic P 117 22.3428 2.35561 0.909091
AU.QLP.BHZ. 2018-09-18T12:02:46.22 10.0 positive automatic P 212 22.0011 -1.34477 0.97561
II.KWJN.BHZ.00 2018-09-18T12:02:30.67 10.0 positive automatic P 30 20.4122 0.0759348 0.952381
GE.GENI.BHZ. 2018-09-18T12:02:03.82 10.0 positive automatic P 288 17.907 0.44282 0.909091
AU.EIDS.BHZ. 2018-09-18T12:02:02.97 10.0 positive automatic P 198 17.9957 -1.41137 0.909091
ND.ONTNC.BHZ.00 2018-09-18T12:01:46.84 10.0 positive automatic P 149 16.5484 -1.01046 0.909091
G.DZM.BHZ.00 2018-09-18T12:01:44.70 10.0 positive automatic P 148 16.348 -0.827854 0.952381
IU.CTAO.BHZ.00 2018-09-18T12:01:35.72 10.0 positive automatic P 221 15.8171 -3.15966 0.888889
AU.COEN.BHZ. 2018-09-18T12:01:29.25 10.0 negative automatic P 247 14.8635 2.30666 0.898876
ND.KOUNC.BHZ.00 2018-09-18T12:01:13.27 10.0 positive automatic P 152 13.9875 -2.48258 0.740741
IU.PMG.BHZ.00 2018-09-18T12:00:26.77 10.0 positive automatic P 263 9.987 3.80867 0.909091
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