Earthquake with magnitude of Mwp 6.3 on date 12-05-2021 and time 16:05:18 (Italy) in region Mauritius Reunion region [Sea]

A magnitude Mwp 6.3 earthquake occured in region: Mauritius Reunion region [Sea], on

  • 12-05-2021 14:05:18 (UTC)
  • 12-05-2021 16:05:18 (UTC +02:00) Italian time
  • 12-05-2021 18:05:18 (UTC +04:00) local time in the region of the earthquake (Indian/Mauritius)

and geographic coordinates (lat, lon) -17.571, 66.321 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

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 5.2
Mwp 6.3

Mwpd 6.5
2021-05-12
14:05:18
-17.5711 66.3208 1 2021-05-12
14:25:35
Sala Sismica INGV-Roma 90023651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-12 14:05:18
Latitude -17.5711
Longitude 66.3208
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 90023651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 23900
Semi-minor axis of confidence ellipse (meter) 10300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 19308.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62.7565
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.61582
Epicentral distance of station closest to the epicenter (degree) 10.60723
Epicentral distance of station farthest from the epicenter (degree) 112.14506
Number of stations at which the event was observed 43
Number of stations from which data was used for origin computation 43
Magnitudes information

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 17
Type of magnitude Mwpd
Reference to an origin 90023651
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-12 14:25:35

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 21
Type of magnitude Mwp
Reference to an origin 90023651
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-12 14:25:35

mb:5.2

Field Value
Value 5.2
Uncertainty 0.2
Num. used stations 35
Type of magnitude mb
Reference to an origin 90023651
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-12 14:25:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
NZ.KHZ.HHZ.10 2021-05-12T14:21:52.93 10.0 positive automatic PP 135 90.266 0.307002 0
GE.PUL.BHZ. 2021-05-12T14:20:57.65 10.0 negative automatic PP 343 82.6711 6.43218 0
II.ALE.BHZ.00 2021-05-12T14:20:04.27 10.0 positive automatic Pdiff 354 112.1451 6.95844 0
IU.MAJO.BHZ.00 2021-05-12T14:18:10.77 10.0 negative automatic PcP 50 86.6485 6.60764 0
IU.PAB.BHZ.00 2021-05-12T14:18:07.62 10.0 positive automatic P 313 87.0656 3.6918 0.115266
IU.LSZ.BHZ.00 2021-05-12T14:17:57.77 10.0 positive automatic S 268 36.5875 -8.87704 0
OE.DAVA.BHZ. 2021-05-12T14:17:43.17 10.0 negative automatic P 325 82.1989 3.72523 0.15507
MN.TUE.BHZ. 2021-05-12T14:17:43.45 10.0 positive automatic PcP 324 82.0082 4.9448 0.149624
GE.MORC.BHZ. 2021-05-12T14:17:29.60 10.0 positive automatic P 330 79.9067 2.52123 0.164135
IU.KIEV.BHZ.00 2021-05-12T14:17:04.62 10.0 negative automatic P 337 75.6377 1.42773 0.21299
MN.BZS.BHZ. 2021-05-12T14:17:02.02 10.0 negative automatic P 329 75.0242 2.3475 0.224498
IU.CTAO.BHZ.00 2021-05-12T14:16:58.30 10.0 negative automatic P 107 74.9157 -0.764931 0.228365
II.ARTI.BHZ.00 2021-05-12T14:16:56.12 10.0 negative automatic P 355 74.2568 0.888253 0.232683
GT.DBIC.BHZ.00 2021-05-12T14:16:54.38 10.0 negative automatic P 282 74.3063 -1.10997 0.211963
GT.VNDA.BHZ.00 2021-05-12T14:16:54.70 10.0 negative automatic P 167 74.0413 0.762509 0.224324
AU.QLP.BHZ. 2021-05-12T14:16:39.67 10.0 negative automatic P 113 71.7204 -0.509334 0.257708
HT.AGG.HHZ. 2021-05-12T14:16:31.87 10.0 positive automatic P 325 69.946 2.41453 0.273565
GE.ISP.BHZ.00 2021-05-12T14:16:28.00 10.0 positive automatic PcP 329 64.8269 -2.5225 0
GE.SNAA.BHZ. 2021-05-12T14:16:26.91 10.0 negative automatic PcP 199 66.841 -11.9103 0
II.KURK.BHZ.00 2021-05-12T14:16:17.75 10.0 positive automatic P 8 69.1354 -6.62477 0.260091
AU.HTT.BHZ. 2021-05-12T14:16:09.10 10.0 positive automatic P 119 66.1543 3.45649 0.336037
GE.FAKI.BHZ. 2021-05-12T14:16:04.12 10.0 negative automatic P 85 66.186 -1.62262 0.312739
IU.MAKZ.BHZ.00 2021-05-12T14:16:00.87 10.0 negative automatic P 12 65.9049 -3.14441 0.152875
II.WRAB.BHZ.00 2021-05-12T14:15:49.72 10.0 positive automatic P 104 64.0153 -1.95388 0.347657
AU.KDU.BHZ.00 2021-05-12T14:15:48.38 10.0 positive automatic P 96 63.7439 -1.45202 0.363887
GE.SANI.BHZ. 2021-05-12T14:15:25.37 10.0 positive automatic P 82 60.5287 -2.87443 0.36873
AU.WRKA.BHZ.00 2021-05-12T14:15:08.00 10.0 negative automatic P 109 57.7484 -1.07602 0.424032
AU.FITZ.BHZ. 2021-05-12T14:14:56.63 10.0 negative automatic P 100 56.2052 -1.42153 0
MY.KKM.BHZ. 2021-05-12T14:14:49.02 10.0 negative automatic P 69 54.6211 2.26031 0.491935
RM.SLV.BHZ. 2021-05-12T14:14:44.57 10.0 positive automatic P 45 53.5594 5.59575 0.474774
AU.MAW.BHZ. 2021-05-12T14:14:13.70 10.0 positive automatic P 182 50.0799 0.808776 0.565553
IU.MBWA.BHZ.00 2021-05-12T14:14:13.27 10.0 negative automatic P 103 50.2861 -1.21102 0.542716
MY.SBM.BHZ. 2021-05-12T14:14:05.37 10.0 positive automatic P 71 49.4564 -2.81271 0.525967
IU.TSUM.BHZ.00 2021-05-12T14:13:43.27 10.0 negative automatic P 260 46.1255 0.758429 0.605027
II.UOSS.BHZ.00 2021-05-12T14:13:20.02 10.0 negative automatic P 347 43.6419 -2.53731 0.313252
AF.ALKP.BHZ. 2021-05-12T14:13:10.19 10.0 negative automatic P 244 41.9091 1.5638 0.710931
GT.BOSA.BHZ.00 2021-05-12T14:12:46.68 10.0 negative automatic P 246 39.1413 0.908445 0.746175
II.MBAR.BHZ.00 2021-05-12T14:12:44.07 10.0 positive automatic P 292 38.8784 0.487507 0.354958
GT.LBTB.BHZ.00 2021-05-12T14:12:41.30 10.0 positive automatic P 252 38.5191 0.778017 0.785472
GE.VOI.BHZ. 2021-05-12T14:09:39.20 10.0 positive automatic P 254 18.8678 1.00165 0.869565
II.ABPO.BHZ.00 2021-05-12T14:09:30.27 10.0 positive automatic P 262 18.1747 -0.0246636 0.615385
GE.SBV.BHZ. 2021-05-12T14:09:04.35 10.0 positive automatic P 282 16.3199 -2.46144 0.930233
G.RER.BHZ.00 2021-05-12T14:07:47.40 10.0 positive automatic P 248 10.6072 -2.26275 0.930233
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