Earthquake with magnitude of mb 5.0 on date 17-12-2020 and time 14:36:46 (Italy) in region Crete, Greece [Sea: Greece]

A magnitude mb 5.0 earthquake occured in region: Crete, Greece [Sea: Greece], on

  • 17-12-2020 13:36:46 (UTC)
  • 17-12-2020 14:36:46 (UTC +01:00) Italian time
  • 17-12-2020 15:36:46 (UTC +02:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 35.459, 26.235 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 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 5.0
Mwp 4.7
2020-12-17
13:36:46
35.4586 26.2354 20 2020-12-17
13:57:23
Sala Sismica INGV-Roma 85494881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-17 13:36:46
Latitude 35.4586
Longitude 26.2354
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 85494881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4323
Semi-minor axis of confidence ellipse (meter) 2276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 3908.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106.312
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) 1.71088
Epicentral distance of station closest to the epicenter (degree) 0.75875
Epicentral distance of station farthest from the epicenter (degree) 58.83981
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

Mwp:4.7

Field Value
Value 4.7
Uncertainty 0
Num. used stations 4
Type of magnitude Mwp
Reference to an origin 85494881
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-12-17 13:57:23

mb:5

Field Value
Value 5
Uncertainty 0.3
Num. used stations 30
Type of magnitude mb
Reference to an origin 85494881
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-12-17 13:57:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.ULN.BHZ.00 2020-12-17T13:46:44.12 10.0 positive automatic P 51 58.8398 0.830187 0.41819
DK.NEEM.BHZ.10 2020-12-17T13:45:58.10 10.0 negative automatic P 345 52.7587 -1.7434 0.509382
GE.SUMG.BHZ. 2020-12-17T13:45:29.70 10.0 positive automatic P 339 48.8697 -0.969137 0.58604
DK.NOR.BHZ. 2020-12-17T13:45:25.55 10.0 positive automatic P 352 48.6202 -2.64689 0.576581
GE.DAG.BHZ. 2020-12-17T13:45:04.06 10.0 positive automatic P 347 45.8291 -2.39081 0.610063
GT.DBIC.BHZ.00 2020-12-17T13:44:24.68 10.0 positive automatic P 232 40.5181 1.14141 0.720188
II.NIL.BHZ.00 2020-12-17T13:44:07.42 10.0 positive automatic P 79 38.4074 1.40582 0.760221
II.AAK.BHZ.00 2020-12-17T13:44:00.37 10.0 positive automatic P 64 37.6365 0.684093 0.812921
II.ARTI.BHZ.00 2020-12-17T13:42:52.42 10.0 positive automatic P 36 30.1295 -1.89825 0.906585
PM.PVAQ.BHZ. 2020-12-17T13:42:29.18 10.0 positive automatic P 284 27.2382 0.607668 0.909091
IU.PAB.BHZ.00 2020-12-17T13:42:04.57 10.0 positive automatic P 289 24.4837 0.814883 0.952381
GE.VSU.BHZ. 2020-12-17T13:41:46.15 10.0 negative automatic P 1 23.0048 -3.28285 0.909091
RD.MFF.BHZ. 2020-12-17T13:41:44.96 10.0 positive automatic P 308 22.6505 -0.749935 0.961538
II.RAYN.BHZ.00 2020-12-17T13:41:26.47 10.0 negative automatic P 120 20.5199 3.54963 0.963855
RD.LOR.BHZ. 2020-12-17T13:41:21.36 10.0 negative automatic P 312 20.4102 -0.347091 0.952381
RD.MTLF.BHZ. 2020-12-17T13:41:17.92 10.0 positive automatic P 300 20.0713 -0.0766316 0.892857
MN.TUE.BHZ. 2020-12-17T13:40:47.00 10.0 negative automatic pP 316 16.7855 0.369545 0
OE.DAVA.BHZ. 2020-12-17T13:40:44.32 10.0 positive automatic P 319 16.9788 1.8953 0.952381
CZ.KHC.BHZ. 2020-12-17T13:40:36.75 10.0 positive automatic P 330 16.5211 0.248941 0.888889
PL.OJC.BHZ. 2020-12-17T13:40:26.37 10.0 negative automatic P 344 15.4818 3.30467 0.930233
GE.MORC.BHZ. 2020-12-17T13:40:25.70 10.0 negative automatic P 339 15.656 0.303982 0.952381
RD.PGF.BHZ. 2020-12-17T13:40:24.02 10.0 negative automatic pP 303 15.1139 -4.91339 0
IU.KIEV.BHZ.00 2020-12-17T13:40:23.47 10.0 negative automatic P 7 15.3941 1.58541 0.930233
IS.KZIT.BHZ. 2020-12-17T13:40:14.06 10.0 negative automatic S 121 8.2043 -1.62269 0
GE.SALP.BHZ. 2020-12-17T13:40:12.70 10.0 negative automatic S 112 8.1761 -2.36248 0
MN.CUC.BHZ. 2020-12-17T13:39:00.22 10.0 positive automatic P 302 9.3975 -0.011976 0.952381
GE.EIL.BHZ. 2020-12-17T13:38:59.15 10.0 positive automatic P 126 9.3449 -0.286743 0.909091
GE.MATE.BHZ. 2020-12-17T13:38:55.35 10.0 positive automatic P 308 9.1159 -0.994064 0.930233
GE.TIRR.BHZ. 2020-12-17T13:38:55.33 10.0 positive automatic P 10 9.1516 -1.43126 0.952381
MN.PDG.BHZ. 2020-12-17T13:38:53.02 10.0 negative automatic P 324 8.8257 0.73522 0.952381
MN.CEL.BHZ. 2020-12-17T13:38:51.47 10.0 positive automatic P 292 8.7294 0.389916 0.97561
GE.MSBI.BHZ. 2020-12-17T13:38:49.65 10.0 positive automatic P 116 8.6666 -0.409892 0.952381
MN.TIP.BHZ. 2020-12-17T13:38:46.72 10.0 negative automatic P 299 8.3988 0.155537 0.952381
IS.AMAZ.BHZ. 2020-12-17T13:38:44.01 10.0 negative automatic P 116 8.2296 -0.156896 0.97561
GE.SALP.BHZ. 2020-12-17T13:38:43.27 10.0 negative automatic P 112 8.1761 -0.180075 0.963855
IS.KZIT.BHZ. 2020-12-17T13:38:42.81 10.0 positive automatic P 121 8.2043 -0.984518 0.930233
IS.GEM.BHZ. 2020-12-17T13:38:41.13 10.0 negative automatic P 103 8.0989 -1.22378 0.97561
IU.ANTO.BHZ.00 2020-12-17T13:38:25.45 10.0 negative automatic P 48 6.8075 0.669962 0.963855
KO.MDUB.BHZ. 2020-12-17T13:38:22.46 10.0 negative automatic P 36 6.3559 3.88358 0.943396
HL.KEK.HHZ. 2020-12-17T13:38:20.78 10.0 positive automatic P 312 6.6398 -1.54265 0.97561
GE.CSS.BHZ. 2020-12-17T13:38:12.30 10.0 positive automatic P 93 5.8172 1.24261 0.869565
HT.LIT.HHZ. 2020-12-17T13:38:06.90 10.0 negative automatic P 329 5.5066 0.0887802 0.938967
HT.ALN.HHZ. 2020-12-17T13:38:03.90 10.0 positive automatic P 358 5.4282 -1.75864 0.990099
KO.BALB.HHZ. 2020-12-17T13:37:49.93 10.0 positive automatic P 17 4.3796 -1.32153 0.917431
HL.ITM.HHZ. 2020-12-17T13:37:47.27 10.0 negative automatic P 298 3.8747 2.91063 0.947867
KO.ELL.BHZ. 2020-12-17T13:37:36.86 10.0 positive automatic P 65 3.2354 1.14743 0.943396
HL.ARG.HHZ. 2020-12-17T13:37:13.41 10.0 positive automatic P 63 1.705 -1.06584 0.483092
GE.APE.BHZ. 2020-12-17T13:37:12.40 10.0 positive automatic P 341 1.7075 -2.19726 0.930233
GE.KARP.BHZ. 2020-12-17T13:36:57.91 10.0 negative automatic P 83 0.7587 -2.51001 0.909091
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