Earthquake with magnitude of Mwp 6.3 on date 15-10-2021 and time 02:44:58 (UTC) in region Solomon Is. [Sea]

A magnitude Mwp 6.3 earthquake occured in region: Solomon Is. [Sea], on

  • 15-10-2021 02:44:58 (UTC)
  • 15-10-2021 04:44:58 (UTC +02:00) Italian time
  • 15-10-2021 13:44:58 (UTC +11:00) local time in the region of the earthquake (Pacific/Guadalcanal)

and geographic coordinates (lat, lon) -8.796, 158.449 at 16 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
mb 5.7
Mwp 6.3

Mwpd 6.5
2021-10-15
02:44:58
-8.7961 158.449 16 2021-10-15
03:03:25
Sala Sismica INGV-Roma 96586341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 02:44:58
Latitude -8.7961
Longitude 158.4490
Depth (km) 16 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 96586341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 23607
Semi-minor axis of confidence ellipse (meter) 1197
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 19066.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34.1414
Number of associated phases, regardless of their use for origin computation 74
Number of defining phases 74
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.61503
Epicentral distance of station closest to the epicenter (degree) 1.61281
Epicentral distance of station farthest from the epicenter (degree) 74.26033
Number of stations at which the event was observed 72
Number of stations from which data was used for origin computation 72
Magnitudes information

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 43
Type of magnitude Mwp
Reference to an origin 96586341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-10-15 03:03:25

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 40
Type of magnitude Mwpd
Reference to an origin 96586341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-10-15 03:03:25

mb:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 55
Type of magnitude mb
Reference to an origin 96586341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-10-15 03:03:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.YAK.BHZ.00 2021-10-15T02:56:31.72 10.0 positive automatic P 346 74.2603 -1.67689 0.232645
IU.ULN.BHZ.00 2021-10-15T02:56:22.97 10.0 positive automatic P 327 72.5235 -0.449741 0.22982
AT.AKUT.BHZ. 2021-10-15T02:56:07.30 10.0 negative automatic P 21 69.7667 0.855573 0.286232
IU.SBA.BHZ.00 2021-10-15T02:56:02.97 10.0 positive automatic P 178 69.184 0.123472 0.236888
GT.VNDA.BHZ.00 2021-10-15T02:55:58.73 10.0 negative automatic P 179 68.7413 -1.38374 0.026267
IU.MA2.BHZ.00 2021-10-15T02:55:57.82 10.0 negative automatic P 356 68.6451 -1.7251 0.271161
IU.CASY.BHZ.00 2021-10-15T02:55:42.67 10.0 positive automatic P 199 66.0147 -0.159936 0.0982448
IU.CHTO.BHZ.00 2021-10-15T02:55:35.32 10.0 positive automatic P 296 64.8221 0.139678 0.318718
IU.ADK.BHZ.00 2021-10-15T02:55:31.12 10.0 positive automatic P 17 64.3292 -0.789386 0.356008
RM.SLV.BHZ. 2021-10-15T02:55:13.47 10.0 negative automatic P 300 61.4154 0.866661 0.357343
IU.PET.BHZ.00 2021-10-15T02:55:13.82 10.0 negative automatic P 0 61.8169 -1.40285 0.376821
GE.GSI.BHZ. 2021-10-15T02:55:12.52 10.0 negative automatic P 276 61.4811 -0.433274 0.381379
IU.YSS.BHZ.00 2021-10-15T02:54:45.05 10.0 positive automatic P 347 57.4766 -0.268508 0.437849
IU.INCN.BHZ.00 2021-10-15T02:54:27.22 10.0 positive automatic P 329 55.0161 -0.519931 0.45339
RM.DLV.BHZ. 2021-10-15T02:54:20.37 10.0 positive automatic P 292 53.826 1.08961 0.492723
IU.POHA.BHZ.00 2021-10-15T02:54:18.30 10.0 positive automatic P 57 53.5439 0.945418 0.521346
II.ERM.BHZ.00 2021-10-15T02:54:10.97 10.0 positive automatic P 346 52.7053 0.130496 0.241093
JP.JTM.BHZ. 2021-10-15T02:54:05.40 10.0 negative automatic P 343 52.1087 -1.0266 0.545006
G.PPTF.BHZ.00 2021-10-15T02:54:01.15 10.0 positive automatic P 106 51.2147 1.30492 0.546676
JP.JTU.BHZ. 2021-10-15T02:53:59.70 10.0 positive automatic P 329 51.3122 -0.766973 0.487082
IU.MAJO.BHZ.00 2021-10-15T02:53:42.57 10.0 negative automatic P 338 49.167 -1.70603 0.56746
G.INU.BHZ.00 2021-10-15T02:53:38.41 10.0 positive automatic P 337 48.5537 -1.10398 0.506954
JP.JGF.BHZ. 2021-10-15T02:53:38.70 10.0 positive automatic P 337 48.6504 -1.63692 0.505534
JP.JMN.BHZ. 2021-10-15T02:53:38.50 10.0 positive automatic P 333 48.5057 -0.718087 0.565348
JP.YOJ.BHZ. 2021-10-15T02:53:36.05 10.0 positive automatic P 315 47.9677 1.07421 0.277635
JP.JOW.BHZ. 2021-10-15T02:53:20.95 10.0 positive automatic P 322 46.1084 0.46029 0.409752
IU.NWAO.BHZ.00 2021-10-15T02:53:12.20 10.0 negative automatic P 231 44.9951 0.492129 0.63886
AU.GIRL.BHZ.00 2021-10-15T02:53:10.30 10.0 positive automatic P 247 44.5533 2.16054 0.646667
AU.MORW.BHZ. 2021-10-15T02:53:08.62 10.0 negative automatic P 237 44.5956 0.111618 0.638494
JP.JMZ.BHZ. 2021-10-15T02:53:01.05 10.0 negative automatic P 323 43.5771 0.754051 0.648998
GE.JAGI.BHZ. 2021-10-15T02:53:00.97 10.0 positive automatic P 267 43.7684 -0.886537 0.645645
MY.LDM.BHZ. 2021-10-15T02:52:50.97 10.0 positive automatic P 288 42.2084 1.74805 0.65829
GE.BKB.BHZ. 2021-10-15T02:52:50.22 10.0 positive automatic P 278 42.057 2.24068 0.561175
IU.RAR.BHZ.00 2021-10-15T02:52:48.25 10.0 negative automatic P 112 42.0649 0.215147 0.699672
IU.MBWA.BHZ.00 2021-10-15T02:52:23.85 10.0 negative automatic P 247 39.2592 -1.04305 0.780222
JP.JCJ.BHZ. 2021-10-15T02:52:22.90 10.0 negative automatic P 337 39.201 -1.4916 0.74504
II.KAPI.BHZ.00 2021-10-15T02:52:20.15 10.0 positive automatic P 273 38.5825 0.911938 0.774875
NZ.ODZ.HHZ.10 2021-10-15T02:52:19.92 10.0 positive automatic P 166 37.7465 7.73287 0.802847
GE.LUWI.BHZ. 2021-10-15T02:52:00.77 10.0 positive automatic P 280 36.3489 0.509497 0.134953
NZ.KHZ.HHZ.10 2021-10-15T02:51:55.34 10.0 positive automatic P 161 36.139 -3.13744 0.8236
GE.MMRI.BHZ. 2021-10-15T02:51:55.62 10.0 positive automatic P 267 35.778 0.221652 0.742529
AU.FORT.BHZ.00 2021-10-15T02:51:54.65 10.0 negative automatic P 228 35.8402 -1.2878 0.839656
IU.SNZO.BHZ.00 2021-10-15T02:51:53.02 10.0 positive automatic P 159 35.5494 -0.409582 0.845646
II.TAU.BHZ.00 2021-10-15T02:51:53.92 10.0 negative automatic P 194 35.4788 1.09554 0.817554
NZ.URZ.HHZ.10 2021-10-15T02:51:37.68 10.0 positive automatic P 153 33.914 -1.61791 0.890461
GE.SANI.BHZ. 2021-10-15T02:51:31.62 10.0 positive automatic P 280 32.9883 0.403344 0.848227
AU.WRKA.BHZ.00 2021-10-15T02:51:29.50 10.0 positive automatic P 237 32.9707 -1.66447 0.8997
AU.TOO.BHZ.00 2021-10-15T02:51:14.73 10.0 positive automatic P 200 31.0654 0.296042 0.940712
AU.HTT.BHZ. 2021-10-15T02:51:08.80 10.0 negative automatic P 213 30.508 -0.735723 0.952887
NZ.OUZ.HHZ.10 2021-10-15T02:51:02.82 10.0 positive automatic P 155 29.833 -0.62628 0.952381
AU.MILA.BHZ.00 2021-10-15T02:51:01.65 10.0 positive automatic P 195 29.4859 1.15177 0.952381
GE.BNDI.BHZ. 2021-10-15T02:50:53.52 10.0 positive automatic P 277 28.6603 0.483673 0.43956
G.CAN.BHZ.00 2021-10-15T02:50:47.35 10.0 positive automatic P 197 27.8935 1.02929 0.930233
AU.MTN.BHZ.00 2021-10-15T02:50:40.15 10.0 positive automatic P 259 27.1181 0.879454 0.941176
GE.FAKI.BHZ. 2021-10-15T02:50:36.32 10.0 positive automatic P 281 26.7028 0.786832 0.952381
AU.RIV.BHZ. 2021-10-15T02:50:28.82 10.0 positive automatic P 194 25.9164 0.412306 0.952381
AU.KDU.BHZ.00 2021-10-15T02:50:27.58 10.0 positive automatic P 259 25.8021 0.198491 0.941176
II.WRAB.BHZ.00 2021-10-15T02:50:26.47 10.0 negative automatic P 242 25.8069 -1.00575 0.833333
AU.LHI.BHZ.00 2021-10-15T02:49:56.63 10.0 positive automatic P 179 22.73 -1.66386 0
AU.ARMA.BHZ. 2021-10-15T02:49:55.27 10.0 negative automatic P 195 22.5403 -1.18667 0.952381
AU.QLP.BHZ. 2021-10-15T02:49:53.55 10.0 negative automatic P 215 22.3097 -0.308899 0.941176
II.MSVF.BHZ.00 2021-10-15T02:49:40.42 10.0 negative automatic P 117 21.0484 -0.0115684 0.754717
IU.FUNA.BHZ.00 2021-10-15T02:49:35.27 10.0 positive automatic P 91 20.5091 0.808244 0.952381
GE.GENI.BHZ. 2021-10-15T02:49:21.17 10.0 positive automatic P 288 19.2096 0.876694 0.769231
AU.EIDS.BHZ. 2021-10-15T02:49:05.27 10.0 positive automatic P 202 17.9939 -1.24874 0.842105
IU.TARA.BHZ.00 2021-10-15T02:49:02.92 10.0 positive automatic P 56 17.6369 0.835735 0.747664
IU.CTAO.BHZ.00 2021-10-15T02:48:44.85 10.0 positive automatic P 225 16.321 -0.769465 0.91954
ND.ONTNC.BHZ.00 2021-10-15T02:48:33.15 10.0 positive automatic P 151 15.5452 -2.40535 0.43956
ND.KOUNC.BHZ.00 2021-10-15T02:48:00.80 10.0 positive automatic P 155 13.0346 -0.795498 0.97561
G.SANVU.BHZ.00 2021-10-15T02:47:31.05 10.0 positive automatic P 129 10.8342 -0.452412 0.952381
AU.RABL.BHZ.00 2021-10-15T02:46:53.18 10.0 positive automatic P 306 7.7576 3.80674 0.43956
IU.HNR.BHZ.00 2021-10-15T02:45:23.35 10.0 positive automatic P 114 1.6128 -1.55317 0.952381
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download