INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Mwp 6.1 on date 27-02-2016 and time 22:29:45 (Italy) in region Western Indian Antarctic Ridge [Sea]

A magnitude Mwp 6.1 earthquake occured in region: Western Indian Antarctic Ridge [Sea], on

  • 27-02-2016 21:29:45 (UTC)
  • 27-02-2016 22:29:45 (UTC +01:00) Italian time
  • 28-02-2016 08:29:45 (UTC +11:00) local time in the region of the earthquake (Australia/Hobart)

and geographic coordinates (lat, lon) -51.67, 139.45 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
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 6.1

Mwpd 6.3
2016-02-27
21:29:45
-51.67 139.45 1 2016-02-27
22:02:20
Sala Sismica INGV-Roma 23640641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-02-27 21:29:45
Latitude -51.67
Longitude 139.45
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 23640641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13292
Semi-minor axis of confidence ellipse (meter) 5944
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 11066.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73.6146
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.13979
Epicentral distance of station closest to the epicenter (degree) 10.24705
Epicentral distance of station farthest from the epicenter (degree) 89.84984
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.2
Num. used stations 20
Type of magnitude Mwpd
Reference to an origin 23640641
Agency INGV
Autore Auto added
Time of creation (UTC) 2016-02-27 22:02:21

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 24
Type of magnitude Mwp
Reference to an origin 23640641
Agency INGV
Autore Auto added
Time of creation (UTC) 2016-02-27 22:02:21

mb:5.5

Field Value
Value 5.5
Uncertainty 0.3
Num. used stations 40
Type of magnitude mb
Reference to an origin 23640641
Agency INGV
Autore Auto added
Time of creation (UTC) 2016-02-27 22:02:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.INCN.BHZ.00 2016-02-27T21:42:44.57 10.0 negative automatic P 350 89.8498 0.574824 0
IU.MAJO.BHZ.00 2016-02-27T21:42:36.12 10.0 positive automatic P 359 88.2212 -0.280547 0.0995676
G.INU.BHZ.00 2016-02-27T21:42:35.36 10.0 positive automatic P 358 87.0447 4.65739 0.118239
G.COYC.BHZ.00 2016-02-27T21:41:50.40 10.0 negative automatic P 158 79.0311 1.16348 0.171868
IU.CHTO.BHZ.00 2016-02-27T21:41:48.15 10.0 negative automatic P 321 78.8485 -0.128791 0.179487
II.EFI.BHZ.00 2016-02-27T21:41:30.32 10.0 negative automatic P 169 75.5967 0.354768 0.203923
GE.VOI.BHZ. 2016-02-27T21:41:26.40 10.0 positive automatic P 254 74.5297 2.44128 0.229756
TM.UBPT.BHZ. 2016-02-27T21:41:18.43 10.0 negative automatic P 326 73.1762 2.56358 0.250418
MY.KUM.BHZ. 2016-02-27T21:40:30.32 10.0 negative automatic P 317 65.8601 -0.335939 0.324089
PS.PSI.BHZ. 2016-02-27T21:40:20.31 10.0 negative automatic P 314 64.2757 -0.197088 0.34428
GE.GSI.BHZ. 2016-02-27T21:40:17.32 10.0 positive automatic P 312 63.6503 1.08054 0.360808
MY.LDM.BHZ. 2016-02-27T21:39:52.12 10.0 negative automatic P 336 59.6001 3.20814 0
MY.SBM.BHZ. 2016-02-27T21:39:45.12 10.0 negative automatic P 328 58.8448 1.42501 0.390848
MY.KSM.BHZ. 2016-02-27T21:39:44.07 10.0 negative automatic P 325 58.5774 2.26611 0.279127
GE.SNAA.BHZ. 2016-02-27T21:39:07.76 10.0 negative automatic P 194 53.8123 -0.125178 0.481731
GE.LUWI.BHZ. 2016-02-27T21:38:58.52 10.0 positive automatic P 339 52.536 0.187299 0.501232
GE.SANI.BHZ. 2016-02-27T21:38:45.07 10.0 negative automatic P 343 50.8896 -0.967606 0
II.KAPI.BHZ.00 2016-02-27T21:38:35.82 10.0 positive automatic P 334 49.4414 0.721214 0.576314
GE.GENI.BHZ. 2016-02-27T21:38:32.27 10.0 negative automatic P 1 49.0814 -0.0278042 0.429156
GE.JAGI.BHZ. 2016-02-27T21:38:24.97 10.0 negative automatic P 325 47.9218 1.58747 0
GE.SOEI.BHZ. 2016-02-27T21:37:51.67 10.0 positive automatic P 338 43.7138 1.38426 0.661637
GE.PMG.BHZ.00 2016-02-27T21:37:41.77 10.0 positive automatic P 11 42.73 -0.39077 0.649202
G.SANVU.BHZ.00 2016-02-27T21:37:38.45 10.0 positive automatic P 42 42.4427 -1.37297 0.669068
AU.MTN.BHZ. 2016-02-27T21:37:14.07 10.0 positive automatic P 347 39.4048 -0.717621 0.758813
AU.KDU.BHZ. 2016-02-27T21:37:13.77 10.0 negative automatic P 349 39.3903 -0.880224 0.77761
AU.COEN.BHZ. 2016-02-27T21:37:00.22 10.0 positive automatic P 6 37.8325 -1.38583 0.818919
ND.KOUNC.BHZ.00 2016-02-27T21:36:52.24 10.0 positive automatic P 41 36.6423 0.777395 0.794526
G.DZM.BHZ.00 2016-02-27T21:36:48.25 10.0 negative automatic P 45 36.2069 0.367167 0.822226
AU.FITZ.BHZ. 2016-02-27T21:36:39.74 10.0 positive automatic P 337 35.2958 -0.188723 0.811766
II.WRAB.BHZ.00 2016-02-27T21:36:09.87 10.0 positive automatic P 351 31.9871 -1.29419 0.868442
NZ.URZ.HHZ.10 2016-02-27T21:35:46.30 10.0 positive automatic P 78 29.3924 -1.91281 0.97561
AU.MORW.BHZ. 2016-02-27T21:35:40.70 10.0 positive automatic P 313 28.5291 0.120906 0.941176
AU.WRKA.BHZ. 2016-02-27T21:35:35.27 10.0 positive automatic P 338 27.9598 -0.282089 0.941176
AU.EIDS.BHZ. 2016-02-27T21:35:33.70 10.0 negative automatic P 23 27.7534 0.05447 0.869565
GT.VNDA.BHZ.00 2016-02-27T21:35:27.05 10.0 positive automatic P 170 27.1428 -1.10333 0.963855
IU.SNZO.BHZ.00 2016-02-27T21:35:18.17 10.0 positive automatic P 81 26.0703 -0.295716 0.43956
AU.QLP.BHZ. 2016-02-27T21:35:12.15 10.0 positive automatic P 10 25.3481 0.213637 0.888889
NZ.KHZ.HHZ.10 2016-02-27T21:35:06.06 10.0 positive automatic P 82 24.7269 -0.199479 0.952381
AU.ARMA.BHZ. 2016-02-27T21:34:50.60 10.0 positive automatic P 28 23.0814 -0.110705 0.91954
AU.FORT.BHZ. 2016-02-27T21:34:44.57 10.0 positive automatic P 334 22.5184 -0.00569575 0.97561
NZ.ODZ.HHZ.10 2016-02-27T21:34:36.89 10.0 negative automatic P 84 21.5707 2.42475 0.938967
IU.CASY.BHZ.00 2016-02-27T21:34:22.32 10.0 positive automatic P 214 20.5138 -0.683308 0.909091
AU.HTT.BHZ. 2016-02-27T21:33:58.05 10.0 positive automatic P 359 18.2453 0.00916694 0.941176
G.CAN.BHZ.00 2016-02-27T21:33:51.75 10.0 positive automatic P 26 17.7235 0.146011 0.43956
AU.MILA.BHZ. 2016-02-27T21:33:31.55 10.0 positive automatic P 29 16.1473 -0.186209 0.963855
AU.TOO.BHZ. 2016-02-27T21:33:12.72 10.0 positive automatic P 19 14.7289 -0.247189 0.91954
II.TAU.BHZ.00 2016-02-27T21:32:12.97 10.0 positive automatic P 34 10.247 1.33434 0.43956
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