Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.7 on date 20-02-2017 and time 08:52:00 (Italy) in region 3 km SW Santa Venerina (CT)

A magnitude ML 2.7 earthquake occured in region: 3 km SW Santa Venerina (CT), on

  • 20-02-2017 07:52:00 (UTC)
  • 20-02-2017 08:52:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6670, 15.1200 at 2 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Santa Venerina CT 3 8592 8592
Zafferana Etnea CT 4 9517 18109
Milo CT 6 1087 19196
Trecastagni CT 6 10910 30106
Viagrande CT 6 8563 38669
Aci Sant'Antonio CT 7 17984 56653
Acireale CT 7 52622 109275
Aci Catena CT 7 29851 139126
Pedara CT 8 14102 153228
Aci Bonaccorsi CT 8 3524 156752
Sant'Alfio CT 9 1582 158334
Giarre CT 9 27659 185993
Valverde CT 10 7840 193833
Nicolosi CT 10 7463 201296
San Giovanni la Punta CT 10 23060 224356
Riposto CT 11 14838 239194
Tremestieri Etneo CT 11 20589 259783
San Gregorio di Catania CT 11 11966 271749
Mascalucia CT 12 31958 303707
Mascali CT 12 14282 317989
Sant'Agata li Battiati CT 12 9479 327468
Aci Castello CT 12 18723 346191
Gravina di Catania CT 13 25838 372029
San Pietro Clarenza CT 13 7743 379772
Camporotondo Etneo CT 15 5023 384795
Belpasso CT 15 28108 412903
Fiumefreddo di Sicilia CT 16 9623 422526
Ragalna CT 16 3924 426450
Piedimonte Etneo CT 17 3963 430413
Catania CT 18 314555 744968
Misterbianco CT 19 49410 794378
Linguaglossa CT 20 5403 799781
Calatabiano CT 20 5308 805089

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NW of Acireale (52622 inhabitants)
18 Km N of Catania (314555 inhabitants)
68 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km N of Siracusa (122291 inhabitants)
70 Km SW of Messina (238439 inhabitants)
89 Km NE of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
95 Km E of Caltanissetta (63360 inhabitants)
95 Km NE of Modica (54633 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

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.7 2017-02-20
07:52:00		 37.6667 15.1198 2 2018-01-10
09:51:19		 Bollettino Sismico Italiano INGV 51342451
Reviewed
Rev200 		ML 2.7 2017-02-20
07:51:00		 37.687 15.091 1 2017-10-26
17:31:03		 Sala Operativa INGV-OE (Catania) 41365241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-20 07:52:00 ± 0.13
Latitude 37.6667 ± 0.0072
Longitude 15.1198 ± 0.0091
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 51342451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 857
Semi-minor axis of confidence ellipse (meter) 172
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 144
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 1.80134
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 51342451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-10-26 17:30:01

ML:2.7

Field Value
Value 2.7
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 41365241
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2017-02-20 08:09:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHZ. 2017-02-20T07:52:31.40 0.6 undecidable manual P 28 199.9443 38 -1.63 15
IV.PLAC.HHZ. 2017-02-20T07:52:25.61 0.6 undecidable manual P 53 144.2445 50 0.69 32
IV.ALJA.HHZ. 2017-02-20T07:52:22.13 1.0 undecidable manual P 275 120.1908 50 0.91 16
IV.CLTA.HHN. 2017-02-20T07:52:20.68 1.0 undecidable manual P 241 116.5944 50 0.02 20
IV.RESU.HHZ. 2017-02-20T07:52:19.51 0.6 undecidable manual P 269 93.3399 50 2.43 11
IV.GIB.HHE. 2017-02-20T07:52:19.09 0.3 undecidable manual P 291 102.3198 50 0.63 54
IV.CSLB.HHZ. 2017-02-20T07:52:18.52 0.6 undecidable manual P 288 97.8243 50 0.75 35
IV.HPAC.HHE. 2017-02-20T07:52:18.76 0.3 undecidable manual P 184 106.5156 50 -0.35 59
IV.PLLN.EHZ. 2017-02-20T07:52:18.01 0.6 undecidable manual P 293 92.9403 50 1 31
IV.SOI.EHZ. 2017-02-20T07:52:17.73 0.6 undecidable manual P 61 93.4398 50 0.64 37
IV.PETRA.HHZ. 2017-02-20T07:52:17.37 0.6 undecidable manual P 282 90.0432 50 0.8 35
IV.MSCL.HHN. 2017-02-20T07:52:16.28 0.3 undecidable manual P 43 85.8474 50 0.36 61
IV.NOV.HHZ. 2017-02-20T07:52:15.12 0.6 undecidable manual S 2 40.1265 93 1.05 34
IV.GMB.BHE. 2017-02-20T07:52:15.53 0.3 undecidable manual P 48 83.3499 50 0 66
IV.HLNI.HHZ. 2017-02-20T07:52:15.27 0.6 undecidable manual S 212 41.5251 93 0.72 39
IV.HMDC.HHZ. 2017-02-20T07:52:14.64 0.6 undecidable manual P 201 83.9493 50 -0.99 32
IV.IVPL.HHZ. 2017-02-20T07:52:14.68 0.3 undecidable manual P 351 79.6647 50 -0.29 63
IV.MSRU.HHZ. 2017-02-20T07:52:13.46 0.3 undecidable manual P 27 74.4699 50 -0.7 56
IV.MEU.SHZ. 2017-02-20T07:52:12.11 0.3 undecidable manual P 203 66.6777 50 -0.86 53
IV.CAGR.HHE. 2017-02-20T07:52:12.31 0.3 undecidable manual P 265 54.7008 92 1.21 46
IV.MSFR.HHZ. 2017-02-20T07:52:12.11 0.3 undecidable manual P 312 61.6938 50 -0.08 68
IV.GALF.HHZ. 2017-02-20T07:52:10.17 0.1 undecidable manual P 276 48.8178 93 0.25 89
IV.MNO.SHZ. 2017-02-20T07:52:09.16 0.3 undecidable manual P 308 47.4192 93 -0.48 64
IV.NOV.HHZ. 2017-02-20T07:52:08.02 0.1 negative manual P 2 40.1265 93 -0.16 92
IV.MUCR.HHZ. 2017-02-20T07:52:08.87 0.3 undecidable manual P 333 47.0196 93 -0.69 59
IV.HLNI.HHZ. 2017-02-20T07:52:08.09 0.1 undecidable manual P 212 41.5251 93 -0.37 88
IV.HAGA.HHZ. 2017-02-20T07:52:08.45 0.1 undecidable manual P 176 42.4242 93 -0.2 91
IV.AIO.HHZ. 2017-02-20T07:52:06.98 0.1 negative manual P 16 35.2425 94 -0.22 92
IV.EPZF.HHZ. 2017-02-20T07:52:05.39 0.1 undecidable manual P 307 28.9488 94 -0.55 86
IV.ESML.HHZ. 2017-02-20T07:52:04.75 0.1 positive manual P 256 21.7671 96 0.23 94
IV.EMSG.HHZ. 2017-02-20T07:52:04.28 0.3 undecidable manual P 319 22.6551 96 -0.42 68
IV.ESLN.HHZ. 2017-02-20T07:52:04.96 0.3 undecidable manual S 283 13.0758 99 0.22 72
IV.EPOZ.HHZ. 2017-02-20T07:52:03.88 0.6 undecidable manual S 84 6.0939 110 1.51 28
IV.ESLN.HHZ. 2017-02-20T07:52:02.42 0.1 positive manual P 283 13.0758 99 -0.38 92
IV.EPOZ.HHZ. 2017-02-20T07:52:01.48 0.1 positive manual P 84 6.0939 110 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:3.0 0.014199999999999999 1.3 AML other m 2017-02-20T07:52:05.14
IV.ESLN.HHN. ML:3.0 0.01445 0.98 AML other m 2017-02-20T07:52:10.05
IV.EMSG.HHE. ML:3.0 0.0075250000000000004 0.46 AML other m 2017-02-20T07:52:13.80
IV.HLNI.HHE. ML:2.3 0.0006979999999999999 0.98 AML other m 2017-02-20T07:52:15.89
IV.AIO.HHN. ML:2.6 0.00178 0.3 AML other m 2017-02-20T07:52:15.61
IV.HLNI.HHN. ML:2.3 0.0007175 1.68 AML other m 2017-02-20T07:52:15.92
IV.ESML.HHE. ML:2.9 0.0064800000000000005 1.04 AML other m 2017-02-20T07:52:17.44
IV.NOV.HHE. ML:3.2 0.005295 0.46 AML other m 2017-02-20T07:52:17.75
IV.ESML.HHN. ML:3.0 0.00705 0.56 AML other m 2017-02-20T07:52:17.95
IV.HAGA.HHE. ML:2.3 0.0006385000000000001 1.22 AML other m 2017-02-20T07:52:18.32
IV.AIO.HHE. ML:2.7 0.0022949999999999997 0.4 AML other m 2017-02-20T07:52:18.57
IV.EMSG.HHN. ML:3.0 0.006710000000000001 0.32 AML other m 2017-02-20T07:52:18.57
IV.EPZF.HHE. ML:2.8 0.00312 0.46 AML other m 2017-02-20T07:52:19.24
IV.MUCR.HHN. ML:2.6 0.0011549999999999998 0.38 AML other m 2017-02-20T07:52:19.41
IV.HAGA.HHN. ML:2.4 0.000812 1.58 AML other m 2017-02-20T07:52:19.10
IV.NOV.HHN. ML:2.8 0.002525 0.72 AML other m 2017-02-20T07:52:20.85
IV.MUCR.HHE. ML:2.6 0.001064 0.44 AML other m 2017-02-20T07:52:21.06
IV.EPZF.HHN. ML:2.8 0.003205 0.5 AML other m 2017-02-20T07:52:22.68
IV.MNO.SHN. ML:0.0 0.0018599999999999999 1.32 AML other m 2017-02-20T07:52:27.03
IV.GALF.HHN. ML:2.4 0.00076 0.8 AML other m 2017-02-20T07:52:28.62
IV.MEU.SHE. ML:0.0 0.0012050000000000001 0.32 AML other m 2017-02-20T07:52:29.43
IV.HMDC.HHE. ML:2.8 0.0009215 0.96 AML other m 2017-02-20T07:52:29.51
IV.MSRU.HHN. ML:2.6 0.0006665 0.36 AML other m 2017-02-20T07:52:29.70
IV.MNO.SHE. ML:0.0 0.0009175 0.76 AML other m 2017-02-20T07:52:29.77
IV.HMDC.HHN. ML:2.9 0.001015 1.2 AML other m 2017-02-20T07:52:29.91
IV.MEU.SHN. ML:0.0 0.0010455 0.32 AML other m 2017-02-20T07:52:30.67
IV.MSFR.HHE. ML:2.0 0.0001835 0.84 AML other m 2017-02-20T07:52:32.67
IV.MSRU.HHE. ML:2.8 0.0009180000000000001 0.4 AML other m 2017-02-20T07:52:32.45
IV.GALF.HHE. ML:2.4 0.0007275000000000001 0.6 AML other m 2017-02-20T07:52:34.87
IV.MSFR.HHN. ML:2.1 0.0002445 0.64 AML other m 2017-02-20T07:52:36.09
IV.PLLN.EHE. ML:2.6 0.0005235000000000001 0.42 AML other m 2017-02-20T07:52:36.65
IV.PLLN.EHN. ML:2.9 0.0008634999999999999 0.48 AML other m 2017-02-20T07:52:42.00
IV.SOI.EHN. ML:2.3 0.000202 0.76 AML other m 2017-02-20T07:52:44.56
IV.CSLB.HHN. ML:1.9 0.0000896 1.3 AML other m 2017-02-20T07:52:45.76
IV.SOI.EHE. ML:2.2 0.00016399999999999997 0.68 AML other m 2017-02-20T07:52:47.44
IV.CSLB.HHE. ML:1.9 0.00008185000000000001 0.62 AML other m 2017-02-20T07:52:50.84
IV.ALJA.HHE. ML:2.3 0.0001605 0.94 AML other m 2017-02-20T07:52:55.87
IV.ALJA.HHN. ML:2.3 0.00014250000000000002 1.4 AML other m 2017-02-20T07:52:56.88
IV.CAR1.HHE. ML:2.8 0.00020899999999999998 0.6 AML other m 2017-02-20T07:53:02.53
IV.ISTR.HHE. ML:3.2 0.0011200000000000001 0.58 AML other m 2017-02-20T07:53:05.00
IV.ISTR.HHN. ML:3.5 0.002275 1.36 AML other m 2017-02-20T07:53:05.06
IV.CAR1.HHN. ML:2.7 0.00016450000000000001 0.48 AML other m 2017-02-20T07:53:06.25
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, /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