Earthquake with magnitude of ML 3.8 on date 06-12-2020 and time 02:49:58 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 3.8 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 06-12-2020 01:49:58 (UTC)
  • 06-12-2020 02:49:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.995, 13.175 at 477 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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
Bulletin
Rev1000
ML 3.8 2020-12-06
01:49:58
39.995 13.1753 477 2020-12-08
17:55:09
Bollettino Sismico Italiano INGV 85262401
Reviewed
Rev100
ML 3.8 2020-12-06
01:49:57
39.8277 13.4382 498 2020-12-06
17:04:38
Sala Sismica INGV-Roma 85248201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-06 01:49:58 ± 0.49
Latitude 39.9950 ± 0.0171
Longitude 13.1753 ± 0.0399
Depth (km) 477 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85262401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2482
Semi-minor axis of confidence ellipse (meter) 2370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 2480
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 89
Number of defining phases 89
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 1.50636
Epicentral distance of station farthest from the epicenter (degree) 3.59459
Number of stations at which the event was observed 77
Number of stations from which data was used for origin computation 77
Magnitudes information

ML:3.8

Field Value
Value 3.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85262401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-07 11:50:41

ML:3.8

Field Value
Value 3.8
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 85248201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-06 17:04:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SOI.EHZ. 2020-12-06T01:52:05.40 0.6 undecidable manual S 130 2.9471 145 -0.5 22
IV.PLAC.HHE. 2020-12-06T01:52:04.90 0.6 undecidable manual S 120 2.9615 145 -1.2 16
IV.SERS.HHE. 2020-12-06T01:52:03.70 0.6 undecidable manual S 108 2.8733 146 -1.2 18
XK.ALB1.HHE. 2020-12-06T01:52:03.50 0.6 undecidable manual S 109 2.8113 146 -0.57 25
MN.TIP.HHE. 2020-12-06T01:52:03.70 1.0 undecidable manual S 105 2.8769 146 -1.25 9
XK.SELL.HHE. 2020-12-06T01:52:03.60 1.0 undecidable manual S 110 2.8482 146 -0.96 10
IV.CELI.HHE. 2020-12-06T01:52:02.70 0.6 undecidable manual S 102 2.6305 148 0.99 25
MN.CEL.HHE. 2020-12-06T01:52:02.40 0.6 undecidable manual S 129 2.7294 147 -0.58 27
IV.SICLA.EHE. 2020-12-06T01:52:02.00 0.6 undecidable manual S 131 2.626 148 0.35 32
IV.SPS2.HHE. 2020-12-06T01:52:00.80 0.6 undecidable manual S 105 2.5343 149 0.3 35
IV.JOPP.HHE. 2020-12-06T01:52:00.00 1.0 undecidable manual S 123 2.5136 149 -0.25 18
XK.GIZZ.HHE. 2020-12-06T01:51:59.90 0.6 undecidable manual S 112 2.5496 149 -0.79 29
IV.HPAC.HHE. 2020-12-06T01:51:16.60 0.3 undecidable manual P 155 3.5946 139 -0.79 26
IV.HAVL.HHN. 2020-12-06T01:51:14.46 0.3 undecidable manual P 153 3.3949 141 -1.16 22
IV.HMDC.HNN. 2020-12-06T01:51:13.99 0.3 undecidable manual P 157 3.2843 142 -0.68 28
IV.SSY.HNN. 2020-12-06T01:51:12.80 0.6 undecidable manual P 152 3.1998 143 -1.16 15
IV.ACATE.HNE. 2020-12-06T01:51:12.77 0.3 undecidable manual P 160 3.1449 143 -0.73 28
IV.PLAC.HHE. 2020-12-06T01:51:11.16 0.1 undecidable manual P 120 2.9615 145 -0.84 38
IV.SERS.HHE. 2020-12-06T01:51:11.03 0.3 undecidable manual P 108 2.8733 146 -0.27 38
IV.HAGA.HHZ. 2020-12-06T01:51:11.90 0.3 undecidable manual P 150 3.1179 143 -1.38 20
MN.TIP.HHE. 2020-12-06T01:51:11.14 0.1 undecidable manual P 105 2.8769 146 -0.2 52
IT.LNT.HGZ. 2020-12-06T01:51:11.77 1.0 undecidable manual P 152 3.0577 144 -1.01 8
IV.RAFF.HHZ. 2020-12-06T01:51:11.11 0.3 undecidable manual P 161 2.9219 145 -0.58 34
IV.HLNI.HHZ. 2020-12-06T01:51:11.07 0.1 undecidable manual P 153 2.9579 145 -0.9 37
XK.SELL.HHE. 2020-12-06T01:51:11.09 0.3 undecidable manual P 110 2.8482 146 -0.02 41
IV.HVZN.HNZ. 2020-12-06T01:51:11.95 0.6 undecidable manual P 156 3.0613 144 -0.86 18
IV.ESML.HHE. 2020-12-06T01:51:10.20 0.3 undecidable manual P 150 2.7213 147 0.06 47
GE.MATE.HHN. 2020-12-06T01:51:10.08 0.3 undecidable manual P 75 2.7672 147 -0.41 42
XK.ALB1.HHE. 2020-12-06T01:51:10.67 0.3 undecidable manual P 109 2.8113 146 -0.15 42
IV.SOI.EHZ. 2020-12-06T01:51:10.81 0.3 undecidable manual P 130 2.9471 145 -1.07 26
IV.FERC.HNN. 2020-12-06T01:51:10.73 0.3 undecidable manual P 123 2.7573 147 0.32 43
IV.CELI.HHE. 2020-12-06T01:51:10.13 0.3 undecidable manual P 102 2.6305 148 0.67 44
IV.ENIC.HHE. 2020-12-06T01:51:10.38 0.3 undecidable manual P 148 2.7654 147 -0.09 45
IV.CPTP.HHZ. 2020-12-06T01:51:10.81 0.6 undecidable manual P 163 2.698 147 0.85 25
IV.ECTS.HHZ. 2020-12-06T01:51:09.00 1.0 undecidable manual P 144 2.5972 148 -0.22 17
IV.CAGR.HHE. 2020-12-06T01:51:09.95 0.1 undecidable manual P 156 2.5864 148 0.81 57
IV.GALF.HHZ. 2020-12-06T01:51:09.06 1.0 undecidable manual P 154 2.5271 149 0.35 17
MN.CEL.HHE. 2020-12-06T01:51:09.24 0.3 undecidable manual P 129 2.7294 147 -0.96 35
IV.AIO.HHZ. 2020-12-06T01:51:09.11 0.3 undecidable manual P 141 2.5784 148 0.03 54
IV.MSRU.HHZ. 2020-12-06T01:51:08.08 0.3 undecidable manual P 133 2.5028 149 -0.46 52
IV.RESU.HHE. 2020-12-06T01:51:08.90 0.6 undecidable manual P 163 2.4453 150 0.76 32
IV.SICLA.EHE. 2020-12-06T01:51:08.87 0.3 undecidable manual P 131 2.626 148 -0.56 46
XK.GIZZ.HHE. 2020-12-06T01:51:08.23 0.3 undecidable manual P 112 2.5496 149 -0.64 47
IV.SPS2.HHE. 2020-12-06T01:51:08.46 0.3 undecidable manual P 105 2.5343 149 -0.31 52
IV.JOPP.HHE. 2020-12-06T01:51:08.19 0.1 undecidable manual P 123 2.5136 149 -0.43 69
IV.ALJA.HHE. 2020-12-06T01:51:08.52 1.0 undecidable manual P 168 2.2897 151 1.44 13
IV.SCHR.EHN. 2020-12-06T01:51:08.20 0.3 undecidable manual P 84 2.2267 152 1.53 39
IV.SLCN.HNZ. 2020-12-06T01:51:07.06 0.3 undecidable manual P 77 1.9174 155 2.28 25
IV.IVPL.HHE. 2020-12-06T01:51:07.48 0.3 undecidable manual P 139 2.1386 153 1.38 45
IV.MCEL.HHN. 2020-12-06T01:51:07.20 0.3 undecidable manual P 80 2.0334 154 1.74 38
IV.MUCR.HHZ. 2020-12-06T01:51:07.21 0.3 undecidable manual P 145 2.3544 151 -0.31 60
IV.GIGS.HJZ. 2020-12-06T01:51:07.39 0.6 undecidable manual P 7 2.4749 149 -0.95 29
IV.SRES.HHN. 2020-12-06T01:51:06.05 0.3 undecidable manual P 348 2.296 151 -1.07 47
IV.SGO.HHE. 2020-12-06T01:51:06.45 1.0 undecidable manual P 70 1.7213 158 2.75 4
IV.MBFT.HHN. 2020-12-06T01:51:06.09 0.3 undecidable manual P 185 2.055 154 0.5 70
IV.PLLN.EHE. 2020-12-06T01:51:06.33 0.3 undecidable manual P 159 2.1377 153 0.23 71
IV.CET2.HHZ. 2020-12-06T01:51:06.41 0.6 undecidable manual P 101 2.1854 152 0.01 48
MN.AQU.HNN. 2020-12-06T01:51:06.63 0.3 undecidable manual P 4 2.3643 151 -0.95 48
IV.FAGN.HHZ. 2020-12-06T01:51:06.44 0.6 undecidable manual P 8 2.2897 151 -0.64 38
IV.CSLB.HHE. 2020-12-06T01:51:06.01 0.3 undecidable manual P 161 2.1674 153 -0.28 69
IV.IVGP.HHZ. 2020-12-06T01:51:06.57 1.0 undecidable manual P 139 2.1125 153 0.62 21
IV.GRIS.HNE. 2020-12-06T01:51:06.35 0.6 undecidable manual P 96 2.0693 154 0.67 43
IV.GIB.HHZ. 2020-12-06T01:51:06.29 0.3 undecidable manual P 161 2.1098 153 0.36 70
IV.MCRV.HHN. 2020-12-06T01:51:06.32 1.0 undecidable manual P 62 1.7096 158 2.68 5
IV.MSFR.HHZ. 2020-12-06T01:51:06.91 0.3 undecidable manual P 150 2.2474 152 0.11 68
IV.T0110.HHZ. 2020-12-06T01:51:06.86 1.0 undecidable manual P 11 2.2789 151 -0.15 22
IX.PGN3.HHN. 2020-12-06T01:51:06.87 0.6 undecidable manual P 73 2.0801 154 1.12 35
IV.MRLC.HHE. 2020-12-06T01:51:06.64 0.6 undecidable manual P 66 1.9192 155 1.85 25
IV.SOLUN.HHE. 2020-12-06T01:51:05.31 0.1 undecidable manual P 172 1.9219 155 0.5 100
IV.PTQR.HHZ. 2020-12-06T01:51:05.22 0.6 undecidable manual P 5 2.0325 154 -0.24 50
IV.INTR.HHE. 2020-12-06T01:51:05.28 0.3 undecidable manual P 15 2.0891 154 -0.52 68
IV.MGR.HHZ. 2020-12-06T01:51:05.45 0.6 undecidable manual P 85 1.8247 157 1.19 39
IV.TRIV.HHN. 2020-12-06T01:51:05.38 0.6 undecidable manual P 30 2.0532 154 -0.2 50
IV.CDRU.HHE. 2020-12-06T01:51:05.43 1.0 undecidable manual P 72 1.6979 158 1.85 14
MN.CUC.HHE. 2020-12-06T01:51:05.49 0.3 undecidable manual P 89 2.0217 154 0.1 78
IV.PSB1.HNE. 2020-12-06T01:51:04.61 0.6 undecidable manual P 45 1.7456 157 0.78 49
IV.MTCE.HHZ. 2020-12-06T01:51:04.53 0.6 undecidable manual P 351 2.0523 154 -1.05 37
IV.MPG.HHE. 2020-12-06T01:51:04.92 0.3 undecidable manual P 175 1.8373 156 0.59 76
IV.VVLD.HHZ. 2020-12-06T01:51:04.36 0.6 undecidable manual P 10 1.9039 156 -0.34 53
IV.SGG.HHN. 2020-12-06T01:51:04.14 1.0 undecidable manual P 33 1.6637 158 0.74 26
IV.BSSO.HHE. 2020-12-06T01:51:04.66 0.3 undecidable manual P 34 1.8859 156 0.06 84
IV.VITU.HHZ. 2020-12-06T01:51:04.66 0.6 undecidable manual P 42 1.6215 159 1.47 37
IV.POFI.HNE. 2020-12-06T01:51:03.78 0.3 undecidable manual P 13 1.769 157 -0.17 88
IV.RCAV.EHZ. 2020-12-06T01:51:03.70 0.6 undecidable manual P 355 1.8589 156 -0.75 47
IV.GUAR.HNN. 2020-12-06T01:51:03.85 0.6 undecidable manual P 3 1.8013 157 -0.28 56
IV.GIUL.HHZ. 2020-12-06T01:51:03.04 0.6 undecidable manual P 2 1.5639 160 0.13 65
IV.CMPR.HHZ. 2020-12-06T01:51:03.65 0.6 undecidable manual P 78 1.6566 158 0.28 60
IV.BULG.HHN. 2020-12-06T01:51:02.72 1.0 undecidable manual P 86 1.6871 158 -0.81 25
IV.LATB.EHZ. 2020-12-06T01:51:02.55 0.6 undecidable manual P 354 1.5064 160 -0.09 67
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSFR.HHE. ML:3.6 9.8093235E-5 1.54 AML other m 2020-12-06T01:51:12.92
IV.GALF.HHN. ML:3.9 0.00016413395 1.22 AML other m 2020-12-06T01:51:13.62
IV.GALF.HNE. ML:3.9 0.000148080665 0.9808 AML other m 2020-12-06T01:51:14.79
IV.GALF.HHE. ML:3.8 0.0001395031 0.7 AML other m 2020-12-06T01:51:19.12
IV.MSFR.HHN. ML:3.4 6.623026E-5 0.32 AML other m 2020-12-06T01:51:20.47
IV.GALF.HNN. ML:3.7 0.0001103866 0.8896 AML other m 2020-12-06T01:51:29.54
IV.HLNI.HHN. ML:3.9 0.0001429871 0.6 AML other m 2020-12-06T01:51:31.20
IV.SOI.EHE. ML:3.9 0.00014272295 1.44 AML other m 2020-12-06T01:51:40.25
IV.HLNI.HHE. ML:3.7 8.3956685E-5 0.12 AML other m 2020-12-06T01:51:40.90
IV.SOI.EHN. ML:3.8 0.000112022815 1.32 AML other m 2020-12-06T01:51:51.92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download