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 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 5.0
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