INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Mwp 6.6 on date 16-10-2018 and time 02:28:15 (Italy) in region New Caledonia [Sea]

A magnitude Mwp 6.6 earthquake occured in region: New Caledonia [Sea], on

  • 16-10-2018 00:28:15 (UTC)
  • 16-10-2018 02:28:15 (UTC +02:00) Italian time
  • 16-10-2018 11:28:15 (UTC +11:00) local time in the region of the earthquake (Pacific/Noumea)

and geographic coordinates (lat, lon) -21.8, 169.51 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 5.5
Mwp 6.6

Mwpd 6.7
2018-10-16
00:28:15
-21.8 169.51 10 2018-10-16
00:42:47
Sala Sismica INGV-Roma 61984631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-16 00:28:15
Latitude -21.80
Longitude 169.51
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 61984631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 19269
Semi-minor axis of confidence ellipse (meter) 15291
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 15554.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74.6458
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.0351
Epicentral distance of station closest to the epicenter (degree) 1.4095
Epicentral distance of station farthest from the epicenter (degree) 47.26032
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

Mwp:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 18
Type of magnitude Mwp
Reference to an origin 61984631
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-10-16 00:42:47

Mwpd:6.7

Field Value
Value 6.7
Uncertainty 0.1
Num. used stations 8
Type of magnitude Mwpd
Reference to an origin 61984631
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-10-16 00:42:47

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 20
Type of magnitude mb
Reference to an origin 61984631
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-10-16 00:42:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.SANI.BHZ. 2018-10-16T00:36:40.07 10.0 positive automatic P 289 46.6735 -1.93331 0.582533
GE.MMRI.BHZ. 2018-10-16T00:36:45.27 10.0 positive automatic P 279 47.2603 -1.33155 0
GE.TNTI.BHZ. 2018-10-16T00:36:42.82 10.0 negative automatic P 293 46.8883 -0.863954 0
IU.MBWA.BHZ.00 2018-10-16T00:36:36.40 10.0 negative automatic P 261 46.1112 -1.21336 0.591819
GE.SOEI.BHZ. 2018-10-16T00:36:28.57 10.0 negative automatic P 278 44.9861 -0.277425 0.610619
GE.FAKI.BHZ. 2018-10-16T00:35:52.57 10.0 negative automatic P 292 40.8032 -2.21576 0.668243
IU.XMAS.BHZ.00 2018-10-16T00:35:49.92 10.0 negative automatic P 58 40.1354 0.676072 0.727365
AU.WRKA.BHZ. 2018-10-16T00:35:28.50 10.0 negative automatic P 257 37.8096 -1.37073 0.754213
AU.MTN.BHZ. 2018-10-16T00:35:26.20 10.0 negative automatic P 277 37.6025 -1.83679 0.758138
AU.FORT.BHZ. 2018-10-16T00:35:30.10 10.0 negative automatic P 247 38.0007 -1.30576 0.795818
AU.KDU.BHZ. 2018-10-16T00:35:16.35 10.0 negative automatic P 278 36.422 -1.62857 0.746763
AU.HTT.BHZ. 2018-10-16T00:34:15.75 10.0 positive automatic P 240 29.3441 -0.554808 0.952381
II.TAU.BHZ.00 2018-10-16T00:34:05.22 10.0 negative automatic P 216 28.0451 0.571425 0.930233
AU.COEN.BHZ. 2018-10-16T00:33:48.07 10.0 negative automatic P 283 26.2134 -0.14461 0.930233
IU.PMG.BHZ.00 2018-10-16T00:33:33.77 10.0 positive automatic P 297 24.7844 -1.43711 0.930233
AU.QLP.BHZ. 2018-10-16T00:33:23.22 10.0 negative automatic P 253 23.4994 -0.222016 0.952381
NZ.ODZ.HHZ.10 2018-10-16T00:33:22.16 10.0 positive automatic P 178 23.2579 1.24043 0.995025
G.CAN.BHZ.00 2018-10-16T00:33:13.15 10.0 negative automatic P 229 22.438 0.834503 0.43956
IU.CTAO.BHZ.00 2018-10-16T00:33:05.82 10.0 negative automatic P 270 21.7618 0.782462 0.952381
NZ.KHZ.HHZ.10 2018-10-16T00:32:53.36 10.0 positive automatic P 172 20.8856 -2.19404 0.892857
AU.RIV.BHZ. 2018-10-16T00:32:49.75 10.0 negative automatic P 229 20.1408 2.27805 0.941176
AU.NIUE.BHZ. 2018-10-16T00:32:41.52 10.0 positive automatic P 86 19.4473 1.60834 0.898876
AU.ARMA.BHZ. 2018-10-16T00:32:28.05 10.0 negative automatic P 238 18.1831 2.09965 0.761905
NZ.URZ.HHZ.10 2018-10-16T00:32:18.42 10.0 negative automatic P 160 17.7068 -1.48353 0.952381
IU.FUNA.BHZ.00 2018-10-16T00:32:00.70 10.0 positive automatic P 37 16.2253 -0.555971 0.808081
IU.HNR.BHZ.00 2018-10-16T00:31:50.75 10.0 negative automatic P 322 15.4015 0.165497 0.43956
NZ.OUZ.HHZ.10 2018-10-16T00:31:28.30 10.0 positive automatic P 166 13.8858 -1.78965 0.966184
II.MSVF.BHZ.00 2018-10-16T00:30:22.47 10.0 positive automatic P 65 9.0053 -0.979718 0.909091
ND.KOUNC.BHZ.00 2018-10-16T00:29:28.42 10.0 negative automatic P 283 5.0261 -0.273243 0.952381
G.DZM.BHZ.00 2018-10-16T00:28:57.65 10.0 negative automatic P 264 2.8535 -1.30966 0.869565
ND.ONTNC.BHZ.00 2018-10-16T00:28:57.89 10.0 negative automatic P 259 2.8735 -1.20639 0.952381
ND.MARNC.BHZ.00 2018-10-16T00:28:36.84 10.0 positive automatic P 283 1.4095 -2.10948 0.97561
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