INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.7 on date 20-03-2017 and time 22:59:44 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.7 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 20-03-2017 21:59:44 (UTC)
  • 20-03-2017 22:59:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.93, 15.26 at 265 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

An earthquake occurred to
86 Km N of Messina (238439 inhabitants)
92 Km W of Lamezia Terme (70714 inhabitants)
95 Km W of Cosenza (67546 inhabitants)
97 Km NW of Reggio di Calabria (183035 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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. 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
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 2.7 2017-03-20
21:59:44
38.93 15.26 265 2018-01-10
09:55:05
Bollettino Sismico Italiano INGV 50855471
Rev 100 ML 2.6 2017-03-20
21:59:44
38.9 15.36 268 2017-03-20
22:23:05
Sala Sismica INGV-Roma 42711271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-20 21:59:44 ± 0.26
Latitude 38.93 ± 0.01
Longitude 15.26 ± 0.03
Depth (km) 265 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50855471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2433
Semi-minor axis of confidence ellipse (meter) 1001
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 2430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.60799
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 50855471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-10-17 10:47:55

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 42711271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-20 22:23:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RMP.HHZ. 2017-03-20T22:01:35.92 3.0 undecidable manual Sn 3.07 0
IV.LPEL.HHZ. 2017-03-20T22:01:26.70 3.0 undecidable manual Sn -0.15 0
IV.APEC.HHZ. 2017-03-20T22:01:21.71 3.0 undecidable manual Pg 13.13 0
IV.SSFR.HHZ. 2017-03-20T22:01:21.15 3.0 undecidable manual Pg 15.47 0
IV.HPAC.HHZ. 2017-03-20T22:00:59.74 3.0 undecidable manual Sn -6.27 0
MN.TIP.HHZ. 2017-03-20T22:00:51.00 0.3 undecidable manual S 77 1.1898 152 0.15 68
IV.PLAC.HHZ. 2017-03-20T22:00:49.00 1.0 undecidable manual S 117 1.036 156 -0.25 23
IV.SOI.EHZ. 2017-03-20T22:00:49.30 0.6 undecidable manual S 144 1.0567 155 -0.15 47
IV.MTTG.HHZ. 2017-03-20T22:00:49.30 0.6 undecidable manual S 159 0.9866 157 0.53 43
IV.GMB.BHZ. 2017-03-20T22:00:48.27 3.0 undecidable manual S 0.36 0
IV.SPS2.HHZ. 2017-03-20T22:00:47.70 0.6 undecidable manual S 66 0.9119 158 -0.38 46
IV.MSCL.HHZ. 2017-03-20T22:00:47.10 0.3 undecidable manual S 149 0.8094 161 -0.12 74
IV.CET2.HHZ. 2017-03-20T22:00:47.30 0.3 undecidable manual S 42 0.8058 161 0.1 74
IV.MSRU.HHE. 2017-03-20T22:00:46.50 0.6 undecidable manual S 164 0.6916 163 0.16 50
IV.MILZ.HHZ. 2017-03-20T22:00:46.10 0.3 undecidable manual S 182 0.6565 164 -0.01 78
IV.CAR1.HHZ. 2017-03-20T22:00:46.80 0.6 undecidable manual S 66 0.8067 161 -0.4 47
TV.AG11.EHE. 2017-03-20T22:00:26.11 0.3 undecidable manual P 21 1.501 147 1.29 39
IV.CDRU.HHZ. 2017-03-20T22:00:25.93 0.1 undecidable manual P 1 1.5603 146 0.65 68
IV.HLNI.HHZ. 2017-03-20T22:00:25.35 0.6 undecidable manual P 191 1.608 145 -0.3 37
IV.SLCN.HHZ. 2017-03-20T22:00:24.19 0.6 undecidable manual P 11 1.4884 147 -0.54 37
IV.MCEL.HHN. 2017-03-20T22:00:24.14 0.1 undecidable manual P 16 1.4569 147 -0.35 78
IV.SCHR.EHN. 2017-03-20T22:00:24.36 0.6 undecidable manual P 26 1.4173 148 0.16 42
IV.MGR.HHZ. 2017-03-20T22:00:23.08 0.1 undecidable manual P 11 1.2294 152 0.18 89
IV.GIB.HHE. 2017-03-20T22:00:23.73 0.1 undecidable manual P 226 1.3463 149 0.04 88
IV.SIRI.HNE. 2017-03-20T22:00:23.34 0.1 undecidable manual P 20 1.3373 150 -0.28 84
IV.MTSN.HHN. 2017-03-20T22:00:23.60 0.1 undecidable manual P 16 1.3895 149 -0.4 80
IV.PIPA.HHZ. 2017-03-20T22:00:23.82 0.1 undecidable manual P 65 1.3274 150 0.26 85
IV.CSLB.HHZ. 2017-03-20T22:00:23.27 0.1 undecidable manual P 224 1.3661 149 -0.56 79
IV.CELI.HHZ. 2017-03-20T22:00:22.66 0.1 undecidable manual P 63 1.0774 155 0.7 80
MN.TIP.HHZ. 2017-03-20T22:00:22.75 0.6 undecidable manual P 77 1.1898 152 0.11 46
IV.SERS.HNN. 2017-03-20T22:00:22.51 0.1 undecidable manual P 84 1.1152 154 0.33 88
IV.PLLN.EHN. 2017-03-20T22:00:22.79 0.6 undecidable manual P 223 1.2797 151 -0.44 42
IV.SOI.EHZ. 2017-03-20T22:00:21.44 0.3 undecidable manual P 144 1.0567 155 -0.39 66
IV.IACL.HHE. 2017-03-20T22:00:21.22 0.3 undecidable manual P 241 0.8085 161 0.68 63
IV.MMN.HHE. 2017-03-20T22:00:21.72 0.3 undecidable manual P 30 1.1152 154 -0.46 64
IV.NOV.HHZ. 2017-03-20T22:00:21.58 0.3 undecidable manual P 186 0.9047 158 0.57 65
IV.MTTG.HHZ. 2017-03-20T22:00:21.22 0.3 undecidable manual P 159 0.9866 157 -0.22 70
IV.PLAC.HHZ. 2017-03-20T22:00:21.56 0.3 undecidable manual P 117 1.036 156 -0.15 70
MN.CUC.HHE. 2017-03-20T22:00:21.97 0.1 undecidable manual P 22 1.1475 153 -0.41 86
IV.AIO.HHE. 2017-03-20T22:00:21.83 0.3 undecidable manual P 181 0.9569 157 0.56 65
IV.SPS2.HHZ. 2017-03-20T22:00:21.06 0.6 undecidable manual P 66 0.9119 158 0.02 49
IV.GRI.EHN. 2017-03-20T22:00:21.52 0.6 undecidable manual P 96 0.9083 158 0.5 45
IV.MSFR.HHZ. 2017-03-20T22:00:21.96 0.6 undecidable manual P 211 1.036 156 0.25 46
IV.MSCL.HHZ. 2017-03-20T22:00:20.16 0.3 undecidable manual P 149 0.8094 161 -0.39 70
IV.CET2.HHZ. 2017-03-20T22:00:20.60 0.3 undecidable manual P 42 0.8058 161 0.08 75
MN.CEL.HNZ. 2017-03-20T22:00:20.32 0.6 undecidable manual P 143 0.831 160 -0.32 47
IV.GMB.BHZ. 2017-03-20T22:00:20.71 3.0 undecidable manual P -0.26 0
IV.IFIL.HHN. 2017-03-20T22:00:20.08 0.1 undecidable manual P 236 0.6457 164 0.22 100
IV.CAR1.HHZ. 2017-03-20T22:00:20.23 0.3 undecidable manual P 66 0.8067 161 -0.3 71
IV.MSRU.HHE. 2017-03-20T22:00:19.43 0.3 undecidable manual P 164 0.6916 163 -0.61 68
IV.MILZ.HHZ. 2017-03-20T22:00:19.48 0.6 undecidable manual P 182 0.6565 164 -0.42 48
IV.IVPL.HHZ. 2017-03-20T22:00:19.84 0.6 undecidable manual P 202 0.5936 165 0.17 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAR1.HHN. ML:2.9 0.0001235 1.22 AML other m 2017-03-20T22:00:47.11
IV.CAR1.HHE. ML:3 0.0001375 1.64 AML other m 2017-03-20T22:00:47.11
IV.CET2.HHN. ML:3 0.000143 0.86 AML other m 2017-03-20T22:00:48.94
IV.MILZ.HHN. ML:2.7 8.075E-5 0.42 AML other m 2017-03-20T22:00:49.89
IV.CET2.HHE. ML:3.1 0.000183 0.44 AML other m 2017-03-20T22:00:49.50
IV.MSCL.HHE. ML:2.9 0.000127 0.52 AML other m 2017-03-20T22:00:49.47
IV.GMB.BHN. ML:3.2 0.0002575 0.56 AML other m 2017-03-20T22:00:50.37
IV.GMB.BHE. ML:3.3 0.0002805 1.4 AML other m 2017-03-20T22:00:50.11
IV.MILZ.HHE. ML:2.6 5.6E-5 1.1 AML other m 2017-03-20T22:00:51.68
IV.SPS2.HHN. ML:2.4 3.555E-5 0.32 AML other m 2017-03-20T22:00:51.67
IV.PLAC.HHN. ML:2.6 5.905E-5 0.72 AML other m 2017-03-20T22:00:51.69
IV.MSCL.HHN. ML:2.9 0.00010535 1.58 AML other m 2017-03-20T22:00:52.06
IV.SPS2.HHE. ML:2.4 3.38E-5 1.34 AML other m 2017-03-20T22:00:52.08
IV.PLAC.HHE. ML:2.6 4.955E-5 0.52 AML other m 2017-03-20T22:00:52.59
IV.CELI.HHE. ML:3 0.000125 1.5 AML other m 2017-03-20T22:00:52.90
MN.TIP.HHE. ML:2.4 3.085E-5 1.1 AML other m 2017-03-20T22:00:53.42
MN.TIP.HHN. ML:2.3 2.6E-5 0.62 AML other m 2017-03-20T22:00:53.84
IV.CELI.HHN. ML:2.8 8.21E-5 1.52 AML other m 2017-03-20T22:00:54.90
IV.PIPA.HHN. ML:2.5 3.51E-5 0.6 AML other m 2017-03-20T22:00:55.55
IV.PIPA.HHE. ML:2.7 5.49E-5 0.66 AML other m 2017-03-20T22:00:56.65
GE.MATE.HHE. ML:2.5 2.69E-5 0.94 AML other m 2017-03-20T22:01:02.03
GE.MATE.HHN. ML:2.6 2.91E-5 1.14 AML other m 2017-03-20T22:01:04.74
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://cnt.rm.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