Earthquake with magnitude of Mwp 6.0 on date 12-03-2021 and time 08:54:15 (UTC) in region Fiji [Sea]

A magnitude Mwp 6.0 earthquake occured in region: Fiji [Sea], on

  • 12-03-2021 08:54:15 (UTC)
  • 12-03-2021 09:54:15 (UTC +01:00) Italian time
  • 12-03-2021 20:54:15 (UTC +12:00) local time in the region of the earthquake (Pacific/Fiji)

and geographic coordinates (lat, lon) -22.366, 174.367 at 20 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 updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.3
Mwp 6.0

Mwpd 6.2
2021-03-12
08:54:15
-22.3664 174.367 20 2021-03-12
09:12:23
Sala Sismica INGV-Roma 88030291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-12 08:54:15
Latitude -22.3664
Longitude 174.3670
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 88030291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12642
Semi-minor axis of confidence ellipse (meter) 8969
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 12513.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115.013
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.69486
Epicentral distance of station closest to the epicenter (degree) 5.77338
Epicentral distance of station farthest from the epicenter (degree) 94.33204
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 45
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 7
Type of magnitude Mwpd
Reference to an origin 88030291
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-12 09:12:23

Mwp:6

Field Value
Value 6
Uncertainty 0.3
Num. used stations 11
Type of magnitude Mwp
Reference to an origin 88030291
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-12 09:12:23

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 26
Type of magnitude mb
Reference to an origin 88030291
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-12 09:12:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.ANMO.BHZ.00 2021-03-12T09:07:34.75 10.0 positive automatic P 54 94.332 2.35602 0.0609932
US.MNTX.BHZ.00 2021-03-12T09:07:31.33 10.0 positive automatic P 57 93.8209 1.53208 0.06661
US.HLID.BHZ.00 2021-03-12T09:07:25.48 10.0 negative automatic P 43 92.6608 0.792009 0.034677
IU.BILL.BHZ.00 2021-03-12T09:07:24.02 10.0 positive automatic sP 357 90.6162 1.41286 0
US.DUG.BHZ.00 2021-03-12T09:07:21.65 10.0 positive automatic P 47 92.1125 -0.449433 0
IU.COLA.BHZ.00 2021-03-12T09:07:19.92 10.0 negative automatic P 15 91.9516 -1.21934 0.0802756
US.BMO.BHZ.00 2021-03-12T09:07:18.50 10.0 positive automatic P 41 91.5008 -0.710961 0.0861747
US.WUAZ.BHZ.00 2021-03-12T09:07:17.14 10.0 positive automatic P 52 90.962 0.344498 0.0809029
US.HAWA.BHZ.00 2021-03-12T09:07:16.18 10.0 positive automatic P 39 90.9771 -0.477528 0.0835659
US.ELK.BHZ.00 2021-03-12T09:07:15.58 10.0 positive automatic P 46 90.7563 -0.368103 0.0812686
IU.BILL.BHZ.00 2021-03-12T09:07:12.17 10.0 positive automatic P 357 90.6162 -2.79701 0.0803748
IU.TUC.BHZ.00 2021-03-12T09:07:12.55 10.0 positive automatic P 55 89.9443 0.611857 0.0872254
US.WVOR.BHZ.00 2021-03-12T09:07:09.25 10.0 positive automatic P 43 89.4246 -0.324913 0.0992738
BK.CMB.BHZ.00 2021-03-12T09:06:52.50 10.0 positive automatic P 46 85.9516 -0.301628 0.126878
IU.CHTO.BHZ.00 2021-03-12T09:06:45.75 10.0 negative automatic PcP 293 84.3959 0.784347 0.124513
JP.JKA.BHZ. 2021-03-12T09:05:39.80 10.0 positive automatic PcP 335 69.9971 -6.50722 0
IU.QSPA.BHZ.00 2021-03-12T09:05:08.92 10.0 negative automatic P 180 67.569 -0.555318 0.310211
JP.JGF.BHZ. 2021-03-12T09:05:08.45 10.0 negative automatic P 328 67.7346 -1.67704 0.30099
IU.CASY.BHZ.00 2021-03-12T09:04:13.47 10.0 positive automatic P 205 59.1708 0.080843 0.423327
GT.VNDA.BHZ.00 2021-03-12T09:03:53.25 10.0 negative automatic pP 183 55.4794 -0.334109 0
IU.SBA.BHZ.00 2021-03-12T09:03:51.15 10.0 negative automatic P 182 55.5994 2.94166 0.449965
AU.MORW.BHZ. 2021-03-12T09:03:27.32 10.0 negative automatic P 250 52.4598 1.99313 0.242923
IU.MBWA.BHZ.00 2021-03-12T09:03:09.12 10.0 negative automatic P 260 50.4666 -1.26661 0.552507
AU.FITZ.BHZ. 2021-03-12T09:02:32.70 10.0 positive automatic P 266 45.7275 -1.04194 0.62602
AU.MTN.BHZ.00 2021-03-12T09:02:07.13 10.0 positive automatic P 276 42.1408 2.18534 0
AU.FORT.BHZ.00 2021-03-12T09:02:03.85 10.0 negative automatic P 248 41.9628 0.358721 0.709922
AU.WRKA.BHZ.00 2021-03-12T09:02:02.85 10.0 positive automatic P 257 42.0681 -1.5813 0.646382
AU.KDU.BHZ.00 2021-03-12T09:01:53.70 10.0 negative automatic P 276 40.9606 -1.54959 0.259433
II.WRAB.BHZ.00 2021-03-12T09:01:22.02 10.0 negative automatic P 266 37.2832 -2.53481 0.810247
AU.HTT.BHZ. 2021-03-12T09:00:47.05 10.0 positive automatic P 243 33.0293 -0.928803 0.90941
II.TAU.BHZ.00 2021-03-12T09:00:25.97 10.0 positive automatic P 221 30.4195 1.04159 0.921518
AU.QLP.BHZ. 2021-03-12T08:59:59.82 10.0 negative automatic P 255 27.681 -0.79866 0.43956
IU.CTAO.BHZ.00 2021-03-12T08:59:46.00 10.0 negative automatic P 270 26.2655 -0.917091 0.43956
G.CAN.BHZ.00 2021-03-12T08:59:41.25 10.0 negative automatic P 234 25.6058 -0.743175 0.344828
AU.RIV.BHZ. 2021-03-12T08:59:21.00 10.0 negative automatic P 236 23.3802 0.539256 0
NZ.ODZ.HHZ.10 2021-03-12T08:59:16.89 10.0 positive automatic P 187 22.8806 0.657665 0.869565
AU.ARMA.BHZ. 2021-03-12T08:59:04.97 10.0 negative automatic P 244 21.8488 -0.432661 0.43956
AU.EIDS.BHZ. 2021-03-12T08:59:01.30 10.0 negative automatic P 257 21.4761 0.0449115 0
NZ.KHZ.HHZ.10 2021-03-12T08:58:47.04 10.0 positive automatic P 182 20.0606 1.12903 0.97561
IU.SNZO.BHZ.00 2021-03-12T08:58:33.72 10.0 negative automatic P 179 18.9436 0.00750094 0.733945
NZ.URZ.HHZ.10 2021-03-12T08:58:00.77 10.0 negative automatic P 172 16.0671 2.09063 0.293686
NZ.OUZ.HHZ.10 2021-03-12T08:57:15.83 10.0 positive automatic P 183 12.8721 0.0741554 0.985222
G.SANVU.BHZ.00 2021-03-12T08:56:36.05 10.0 positive automatic P 314 9.681 3.95382 0.869565
ND.KOUNC.BHZ.00 2021-03-12T08:56:32.05 10.0 negative automatic P 279 9.5539 1.68916 0.43956
AU.NFK.BHZ.00 2021-03-12T08:56:19.42 10.0 positive automatic P 220 8.8348 -1.0981 0.970874
II.MSVF.BHZ.00 2021-03-12T08:55:37.67 10.0 positive automatic P 37 5.7734 -0.935204 0.97561
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