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 seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is 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 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
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
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.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
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.ACATE.HNE. 2020-12-06T01:51:12.77 0.3 undecidable manual P 160 3.1449 143 -0.73 28
IV.SSY.HNN. 2020-12-06T01:51:12.80 0.6 undecidable manual P 152 3.1998 143 -1.16 15
IV.HAGA.HHZ. 2020-12-06T01:51:11.90 0.3 undecidable manual P 150 3.1179 143 -1.38 20
IT.LNT.HGZ. 2020-12-06T01:51:11.77 1.0 undecidable manual P 152 3.0577 144 -1.01 8
MN.TIP.HHE. 2020-12-06T01:51:11.14 0.1 undecidable manual P 105 2.8769 146 -0.2 52
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
IV.HVZN.HNZ. 2020-12-06T01:51:11.95 0.6 undecidable manual P 156 3.0613 144 -0.86 18
XK.SELL.HHE. 2020-12-06T01:51:11.09 0.3 undecidable manual P 110 2.8482 146 -0.02 41
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
XK.ALB1.HHE. 2020-12-06T01:51:10.67 0.3 undecidable manual P 109 2.8113 146 -0.15 42
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.SOI.EHZ. 2020-12-06T01:51:10.81 0.3 undecidable manual P 130 2.9471 145 -1.07 26
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
GE.MATE.HHN. 2020-12-06T01:51:10.08 0.3 undecidable manual P 75 2.7672 147 -0.41 42
IV.ESML.HHE. 2020-12-06T01:51:10.20 0.3 undecidable manual P 150 2.7213 147 0.06 47
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.ECTS.HHZ. 2020-12-06T01:51:09.00 1.0 undecidable manual P 144 2.5972 148 -0.22 17
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.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.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.SLCN.HNZ. 2020-12-06T01:51:07.06 0.3 undecidable manual P 77 1.9174 155 2.28 25
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.PLLN.EHE. 2020-12-06T01:51:06.33 0.3 undecidable manual P 159 2.1377 153 0.23 71
IV.FAGN.HHZ. 2020-12-06T01:51:06.44 0.6 undecidable manual P 8 2.2897 151 -0.64 38
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.CSLB.HHE. 2020-12-06T01:51:06.01 0.3 undecidable manual P 161 2.1674 153 -0.28 69
IV.MCRV.HHN. 2020-12-06T01:51:06.32 1.0 undecidable manual P 62 1.7096 158 2.68 5
IV.GIB.HHZ. 2020-12-06T01:51:06.29 0.3 undecidable manual P 161 2.1098 153 0.36 70
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.MSFR.HHZ. 2020-12-06T01:51:06.91 0.3 undecidable manual P 150 2.2474 152 0.11 68
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.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.PTQR.HHZ. 2020-12-06T01:51:05.22 0.6 undecidable manual P 5 2.0325 154 -0.24 50
IV.SOLUN.HHE. 2020-12-06T01:51:05.31 0.1 undecidable manual P 172 1.9219 155 0.5 100
IV.VVLD.HHZ. 2020-12-06T01:51:04.36 0.6 undecidable manual P 10 1.9039 156 -0.34 53
IV.MPG.HHE. 2020-12-06T01:51:04.92 0.3 undecidable manual P 175 1.8373 156 0.59 76
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.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.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.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.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 *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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