Earthquake with magnitude of ML 3.1 on date 07-12-2018 and time 04:16:44 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 3.1 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 07-12-2018 03:16:44 (UTC)
  • 07-12-2018 04:16:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.29, 14.29 at 424 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 last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. 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 last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 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 1985

Earthquakes since 1985 *

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 2014

Earthquakes since 1000 AD until 2014 *

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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 1000 ML 3.1 2018-12-07
03:16:44
39.29 14.29 424 2019-06-04
09:16:19
Bollettino Sismico Italiano INGV 69170141
Rev 100 ML 3.4 2018-12-07
03:16:44
39.3 14.39 423 2018-12-07
03:39:24
Sala Sismica INGV-Roma 63726881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-07 03:16:44 ± 0.33
Latitude 39.29 ± 0.03
Longitude 14.29 ± 0.04
Depth (km) 424 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69170141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3723
Semi-minor axis of confidence ellipse (meter) 1966
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 124
Circular confidence region, given by single value of horizontal uncertainty (meter) 3720
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.75723
Epicentral distance of station farthest from the epicenter (degree) 3.79784
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 41
Magnitudes information

ML:3.4

Field Value
Value 3.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 63726881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-07 03:39:24

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 69170141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-03 10:03:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SALB.HHZ. 2018-12-07T03:18:28.10 0.6 undecidable manual S 69 1.6898 156 1.33 25
IV.PIPA.HHZ. 2018-12-07T03:18:28.91 0.6 undecidable manual S 83 1.9623 152 -0.73 29
IV.MTTG.HHZ. 2018-12-07T03:18:27.75 0.3 undecidable manual S 139 1.6925 156 0.95 47
IV.PLAC.HHZ. 2018-12-07T03:18:27.27 0.6 undecidable manual S 116 1.8715 153 -1.38 23
IV.GRI.EHE. 2018-12-07T03:18:26.68 0.6 undecidable manual S 105 1.7186 155 -0.38 38
MN.CEL.HHZ. 2018-12-07T03:18:25.15 0.6 undecidable manual S 129 1.6197 156 -0.93 33
IV.SPS2.HHZ. 2018-12-07T03:18:25.63 0.3 undecidable manual S 89 1.5855 157 -0.14 65
IV.MSRU.HHZ. 2018-12-07T03:18:24.55 0.6 undecidable manual S 137 1.3975 159 0.46 44
IV.CSLB.HHZ. 2018-12-07T03:18:24.10 0.6 undecidable manual S 188 1.3625 160 0.3 47
IV.CAR1.HHZ. 2018-12-07T03:18:24.28 0.6 undecidable manual S 91 1.4884 158 -0.59 41
IV.PLLN.EHN. 2018-12-07T03:18:23.43 0.6 undecidable manual S 185 1.3004 161 0.13 50
IV.JOPP.HHZ. 2018-12-07T03:18:23.83 0.6 undecidable manual S 118 1.4164 159 -0.42 45
MN.VSL.HHN. 2018-12-07T03:17:57.62 0.1 undecidable manual P 275 3.7978 134 -2.78 3
IV.NOCI.HHN. 2018-12-07T03:17:48.54 0.3 undecidable manual P 54 2.599 145 -1.07 21
IV.LTRZ.HNN. 2018-12-07T03:17:46.34 0.3 undecidable manual P 55 2.3418 148 -1.3 24
IV.PIPA.HHZ. 2018-12-07T03:17:45.48 0.1 undecidable manual P 83 1.9623 152 0.47 63
IV.HVZN.HHE. 2018-12-07T03:17:45.78 0.3 undecidable manual P 171 2.1359 150 -0.39 42
IV.LADO.EHE. 2018-12-07T03:17:45.90 0.3 undecidable manual P 89 2.0819 151 0.1 47
IV.HAGA.HHZ. 2018-12-07T03:17:45.10 0.1 undecidable manual P 161 2.1152 150 -0.93 46
MN.TIP.HHZ. 2018-12-07T03:17:44.95 0.1 negative manual P 93 1.9147 153 0.24 69
IV.HLNI.HHE. 2018-12-07T03:17:44.50 0.1 undecidable manual P 167 1.9929 152 -0.71 56
IV.GRI.EHE. 2018-12-07T03:17:44.12 0.3 undecidable manual P 105 1.7186 155 0.6 53
IV.PLAC.HHZ. 2018-12-07T03:17:44.13 0.1 undecidable manual P 116 1.8715 153 -0.31 70
IV.MCEL.HHN. 2018-12-07T03:17:43.31 0.3 undecidable manual P 48 1.5558 157 0.7 56
IV.CAFE.HHN. 2018-12-07T03:17:43.95 0.6 undecidable manual P 22 1.8823 153 -0.55 33
IV.TDS.HHZ. 2018-12-07T03:17:43.70 0.3 undecidable manual P 76 1.6233 156 0.72 54
IX.PGN3.HHN.02 2018-12-07T03:17:43.66 0.3 undecidable manual P 42 1.7267 155 0.1 60
IV.MODR.HHE. 2018-12-07T03:17:43.05 0.3 undecidable manual P 351 1.8814 153 -1.45 32
IV.MTTG.HHZ. 2018-12-07T03:17:43.14 0.3 undecidable manual P 139 1.6925 156 -0.23 59
IV.EPZF.HHZ. 2018-12-07T03:17:43.27 0.6 undecidable manual P 163 1.5306 158 0.8 37
IV.SALB.HHZ. 2018-12-07T03:17:43.95 0.1 undecidable manual P 69 1.6898 156 0.6 72
IV.CORL.HHZ. 2018-12-07T03:17:43.21 0.3 undecidable manual P 209 1.5918 157 0.41 61
IV.CAR1.HHZ. 2018-12-07T03:17:42.15 0.1 undecidable manual P 91 1.4884 158 -0.1 92
IV.SPS2.HHZ. 2018-12-07T03:17:42.90 0.3 undecidable manual P 89 1.5855 157 0.13 65
IV.MCRV.HHN. 2018-12-07T03:17:42.91 0.3 undecidable manual P 24 1.6377 156 -0.14 63
IV.MMN.HHZ. 2018-12-07T03:17:42.44 0.3 undecidable manual P 65 1.4425 159 0.42 66
IV.AIO.HHE. 2018-12-07T03:17:42.51 0.3 undecidable manual P 150 1.51 158 0.14 67
IV.MPNC.HHN. 2018-12-07T03:17:42.44 0.3 undecidable manual P 144 1.4119 159 0.57 64
MN.CEL.HHZ. 2018-12-07T03:17:42.61 0.1 undecidable manual P 129 1.6197 156 -0.34 81
IV.CMPR.HHZ. 2018-12-07T03:17:41.18 0.3 undecidable manual P 37 1.2896 161 -0.12 75
MN.CUC.HNE. 2018-12-07T03:17:41.76 0.3 undecidable manual P 59 1.3697 160 0.09 73
IV.IVGP.HHN. 2018-12-07T03:17:41.12 0.3 undecidable manual P 149 1.0342 164 0.88 63
IV.SOLUN.HHE. 2018-12-07T03:17:41.27 0.1 undecidable manual P 206 1.3337 160 -0.23 96
IV.CET2.HHZ. 2018-12-07T03:17:41.73 0.3 undecidable manual P 79 1.3085 161 0.35 71
IV.PLLN.EHN. 2018-12-07T03:17:41.29 0.1 undecidable manual P 185 1.3004 161 -0.06 100
IV.MSRU.HHZ. 2018-12-07T03:17:41.37 0.3 undecidable manual P 137 1.3975 159 -0.43 67
IV.MUCR.HHE. 2018-12-07T03:17:41.24 0.3 undecidable manual P 160 1.3265 160 -0.22 72
IV.IVPL.HHN. 2018-12-07T03:17:41.11 0.3 undecidable manual P 149 1.0594 164 0.77 65
IV.JOPP.HHZ. 2018-12-07T03:17:41.80 0.3 undecidable manual P 118 1.4164 159 -0.09 71
IV.CSLB.HHZ. 2018-12-07T03:17:41.17 0.1 undecidable manual P 188 1.3625 160 -0.47 90
IV.MGR.HHZ. 2018-12-07T03:17:41.49 0.3 undecidable manual P 49 1.2905 161 0.19 73
IV.GRIS.HNE. 2018-12-07T03:17:40.66 0.1 undecidable manual P 69 1.2878 161 -0.63 88
IV.IACL.HHZ. 2018-12-07T03:17:39.68 0.3 undecidable manual P 176 0.7572 168 0.33 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHN. ML:3.3 7.9345745E-5 1.56 AML other m 2018-12-07T03:18:30.84
IV.MTTG.HHE. ML:3.3 7.291165E-5 1.5408 AML other m 2018-12-07T03:18:31.82
IV.MSRU.HHE. ML:3.2 6.486487E-5 0.7408 AML other m 2018-12-07T03:17:51.48
IV.MSRU.HHN. ML:3.1 5.5050055E-5 0.5008 AML other m 2018-12-07T03:17:42.42
IV.JOPP.HHN. ML:3 4.5286355E-5 0.32 AML other m 2018-12-07T03:17:43.73
IV.JOPP.HHE. ML:2.9 3.028296E-5 0.1792 AML other m 2018-12-07T03:17:43.93
MN.CEL.HHE. ML:3 3.9667745E-5 0.44 AML other m 2018-12-07T03:17:45.17
MN.CEL.HHN. ML:3 3.298773E-5 0.48 AML other m 2018-12-07T03:17:47.22
IV.SPS2.HHN. ML:2.4 1.16304805E-5 0.2592 AML other m 2018-12-07T03:17:45.37
IV.GMB.BHN. ML:3.7 0.00019971085 0.16 AML other m 2018-12-07T03:17:45.45
IV.GMB.BHE. ML:4 0.0003933469 0.16 AML other m 2018-12-07T03:17:44.71
IV.PLAC.HHN. ML:3 3.3572145E-5 0.2192 AML other m 2018-12-07T03:17:46.89
IV.PLAC.HHE. ML:3.2 5.321667E-5 0.32 AML other m 2018-12-07T03:17:46.52
MN.TIP.HHN. ML:3.1 4.510146E-5 0.56 AML other m 2018-12-07T03:18:31.08
MN.TIP.HHE. ML:2.9 3.2079505E-5 0.48 AML other m 2018-12-07T03:18:34.28
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

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 full SEED format Download