Earthquake with magnitude of ML 3.1 on date 28-06-2012 and time 10:18:51 (Italy) in region 3 km S Sant'Alfio (CT)

A magnitude ML 3.1 earthquake occured in region: 3 km S Sant'Alfio (CT), on

  • 28-06-2012 08:18:51 (UTC)
  • 28-06-2012 10:18:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7190, 15.1530 at 3 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Alfio CT 3 1582 1582
Giarre CT 3 27659 29241
Milo CT 3 1087 30328
Santa Venerina CT 4 8592 38920
Riposto CT 5 14838 53758
Zafferana Etnea CT 5 9517 63275
Mascali CT 6 14282 77557
Fiumefreddo di Sicilia CT 10 9623 87180
Piedimonte Etneo CT 10 3963 91143
Acireale CT 12 52622 143765
Aci Sant'Antonio CT 13 17984 161749
Aci Catena CT 13 29851 191600
Trecastagni CT 13 10910 202510
Viagrande CT 13 8563 211073
Calatabiano CT 14 5308 216381
Linguaglossa CT 14 5403 221784
Pedara CT 14 14102 235886
Aci Bonaccorsi CT 14 3524 239410
Valverde CT 16 7840 247250
Nicolosi CT 16 7463 254713
San Giovanni la Punta CT 17 23060 277773
Gaggi ME 17 3184 280957
Tremestieri Etneo CT 17 20589 301546
San Gregorio di Catania CT 17 11966 313512
Giardini-Naxos ME 18 9415 322927
Aci Castello CT 18 18723 341650
Mascalucia CT 18 31958 373608
Castiglione di Sicilia CT 19 3215 376823
Taormina ME 19 10960 387783
Sant'Agata li Battiati CT 19 9479 397262
Castelmola ME 19 1088 398350
Gravina di Catania CT 19 25838 424188
San Pietro Clarenza CT 20 7743 431931
Motta Camastra ME 20 845 432776

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
96 Km NE of Ragusa (73313 inhabitants)
99 Km E of Caltanissetta (63360 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

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
Reviewed
Rev200
ML 3.1 2012-06-28
08:18:51
37.728 15.098 6 2014-10-21
12:08:56
Sala Sismica INGV-Roma 1735821
Reviewed
Rev100
ML 3.1 2012-06-28
08:18:51
37.7178 15.164 3 2014-10-21
12:08:56
Sala Sismica INGV-Roma 1735531
Bulletin
Rev1000
ML 3.1 2012-06-28
08:18:51
37.7188 15.1532 3 2014-09-19
08:14:18
Bollettino Sismico Italiano INGV 3165431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-06-28 08:18:51 ± 0.11
Latitude 37.7188 ± 0.0045
Longitude 15.1532 ± 0.0102
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3165431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 651
Semi-minor axis of confidence ellipse (meter) 567
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.14389
Epicentral distance of station farthest from the epicenter (degree) 1.24736
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1735821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-06-28 08:39:30

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 1735531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-06-28 08:25:12

ML:3.1

Field Value
Value 3.1
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 3165431
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:45:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2012-06-28T08:19:19.52 0.6 undecidable manual S 201 90.4428 50 -0.02 44
IV.HAVL.HHZ. 2012-06-28T08:19:18.49 0.6 undecidable manual S 182 84.249 50 0.58 39
IV.PLAC.HHZ. 2012-06-28T08:19:15.91 0.3 undecidable manual P 54 138.4614 50 1 43
IV.MILZ.HHZ. 2012-06-28T08:19:13.07 0.6 undecidable manual S 6 61.6938 50 1.2 31
IV.SSY.HHZ. 2012-06-28T08:19:12.61 0.6 undecidable manual S 186 62.6928 50 0.48 42
IV.JOPP.HHZ. 2012-06-28T08:19:11.53 0.3 undecidable manual P 33 117.3936 50 -0.14 61
IV.ATN.BHZ. 2012-06-28T08:19:10.52 0.6 undecidable manual S 29 55.9995 50 0.17 45
IV.GIB.HHZ. 2012-06-28T08:19:09.84 0.3 undecidable manual P 287 103.2189 50 0.36 59
IV.PLLN.SHZ. 2012-06-28T08:19:09.44 0.6 undecidable manual P 289 93.5397 50 1.45 25
IV.AGST.EHZ. 2012-06-28T08:19:09.45 0.6 undecidable manual S 173 51.7038 93 0.43 43
IV.HAGA.HHZ. 2012-06-28T08:19:08.60 0.3 undecidable manual S 180 48.1185 93 0.81 57
IV.HCRL.HHZ. 2012-06-28T08:19:08.76 0.6 undecidable manual S 192 49.5171 93 0.5 43
IV.MPNC.HHZ. 2012-06-28T08:19:08.33 0.6 undecidable manual S 20 50.5161 93 -0.3 44
IV.SOI.EHZ. 2012-06-28T08:19:07.48 0.3 undecidable manual P 63 88.1451 50 0.32 62
IV.HLNI.HHZ. 2012-06-28T08:19:07.20 0.6 undecidable manual S 211 47.9187 93 -0.53 42
IV.HAVL.HHZ. 2012-06-28T08:19:06.29 0.1 positive manual P 182 84.249 50 -0.27 84
IV.HMDC.HHZ. 2012-06-28T08:19:06.89 0.3 undecidable manual P 201 90.4428 50 -0.61 57
IV.IVPL.HHZ. 2012-06-28T08:19:04.93 0.1 positive manual P 348 74.4699 50 -0.12 88
IV.MEU.SHZ. 2012-06-28T08:19:04.02 0.1 undecidable manual P 203 73.1712 50 -0.83 71
IV.CAGR.HHZ. 2012-06-28T08:19:03.53 0.6 undecidable manual P 260 58.3971 50 0.96 35
IV.NOV.HHZ. 2012-06-28T08:19:03.79 0.6 undecidable manual S 358 34.3434 94 0.79 39
IV.MSRU.HHZ. 2012-06-28T08:19:03.82 0.1 positive manual P 27 67.9764 50 -0.23 87
IV.SSY.HHZ. 2012-06-28T08:19:03.02 0.1 positive manual P 186 62.6928 50 -0.21 89
IV.MILZ.HHZ. 2012-06-28T08:19:02.47 0.1 positive manual P 6 61.6938 50 -0.61 80
IV.MSFR.HHZ. 2012-06-28T08:19:02.22 0.3 undecidable manual P 306 60.2952 50 -0.65 59
IV.AGST.EHZ. 2012-06-28T08:19:01.24 0.3 undecidable manual P 173 51.7038 93 -0.19 68
IV.GALF.HHZ. 2012-06-28T08:19:01.35 0.1 negative manual P 269 51.5151 93 -0.04 94
IV.ATN.BHZ. 2012-06-28T08:19:01.86 0.1 positive manual P 29 55.9995 50 -0.34 87
IV.MPNC.HHZ. 2012-06-28T08:19:00.90 0.1 positive manual P 20 50.5161 93 -0.3 89
IV.HAGA.HHZ. 2012-06-28T08:19:00.70 0.3 positive manual P 180 48.1185 93 -0.02 71
IV.HLNI.HHZ. 2012-06-28T08:19:00.05 0.3 undecidable manual P 211 47.9187 93 -0.63 61
IV.HCRL.HHZ. 2012-06-28T08:19:00.87 0.1 undecidable manual P 192 49.5171 93 -0.12 92
IV.MNO.SHZ. 2012-06-28T08:19:00.18 0.3 undecidable manual P 301 46.5201 93 -0.22 68
IV.ECNV.HHZ. 2012-06-28T08:18:59.91 0.3 undecidable manual P 251 41.0256 94 0.61 62
IV.MCSR.HHZ. 2012-06-28T08:18:58.92 0.1 positive manual P 10 38.9277 94 0.04 96
IV.NOV.HHZ. 2012-06-28T08:18:58.29 0.1 positive manual P 358 34.3434 94 0.34 91
IV.ESLN.HHZ. 2012-06-28T08:18:56.74 0.6 undecidable manual S 260 15.9729 99 0.08 49
IV.ESLN.HHZ. 2012-06-28T08:18:54.32 0.1 negative manual P 260 15.9729 99 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATN.BHE. ML:3.1 0.0027800000000000004 0.44 AML other m 2012-06-28T08:19:14.73
IV.ATN.BHN. ML:3.1 0.0030700000000000002 0.92 AML other m 2012-06-28T08:19:16.33
IV.CAGR.HHE. ML:3.1 0.002625 0.46 AML other m 2012-06-28T08:19:22.51
IV.CAGR.HHN. ML:2.9 0.0018649999999999997 0.48 AML other m 2012-06-28T08:19:26.81
IV.ECNV.HHN. ML:3.1 0.004035 0.72 AML other m 2012-06-28T08:19:16.47
IV.ECNV.HHE. ML:2.9 0.003025 0.86 AML other m 2012-06-28T08:19:16.01
IV.ESLN.HHN. ML:3.3 0.0201 0.66 AML other m 2012-06-28T08:18:57.23
IV.ESLN.HHE. ML:3.3 0.0198 1.58 AML other m 2012-06-28T08:19:03.49
IV.FAVR.HHE. ML:3.0 0.0005369999999999999 0.8 AML other m 2012-06-28T08:19:42.06
IV.FAVR.HHN. ML:2.8 0.00038500000000000003 0.66 AML other m 2012-06-28T08:19:51.43
IV.GALF.HHE. ML:3.2 0.0037800000000000004 0.6 AML other m 2012-06-28T08:19:23.12
IV.GALF.HHN. ML:3.1 0.00311 0.48 AML other m 2012-06-28T08:19:16.29
IV.GIB.HHN. ML:3.2 0.0014100000000000002 0.56 AML other m 2012-06-28T08:19:31.32
IV.GIB.HHE. ML:3.2 0.001365 0.56 AML other m 2012-06-28T08:19:32.93
IV.HAGA.HHN. ML:2.9 0.0024649999999999997 0.98 AML other m 2012-06-28T08:19:10.53
IV.HAGA.HHE. ML:2.8 0.00189 1.24 AML other m 2012-06-28T08:19:13.15
IV.HAVL.HHN. ML:3.4 0.0035099999999999997 1.58 AML other m 2012-06-28T08:19:22.40
IV.HAVL.HHE. ML:3.4 0.0033399999999999997 1.44 AML other m 2012-06-28T08:19:21.07
IV.HCRL.HHN. ML:3.4 0.006279999999999999 0.84 AML other m 2012-06-28T08:19:11.25
IV.HCRL.HHE. ML:3.6 0.010094999999999998 0.34 AML other m 2012-06-28T08:19:09.06
IV.HLNI.HHE. ML:2.6 0.0011404999999999998 0.58 AML other m 2012-06-28T08:19:12.47
IV.HLNI.HHN. ML:2.6 0.000995 0.3 AML other m 2012-06-28T08:19:08.06
IV.HMDC.HHE. ML:3.2 0.0020800000000000003 1.12 AML other m 2012-06-28T08:19:21.21
IV.HMDC.HHN. ML:3.2 0.00171 0.62 AML other m 2012-06-28T08:19:22.86
IV.IFIL.HHN. ML:3.3 0.001825 0.54 AML other m 2012-06-28T08:19:32.44
IV.IFIL.HHE. ML:3.7 0.004849999999999999 1.46 AML other m 2012-06-28T08:19:30.54
IV.IVPL.HHE. ML:3.9 0.01225 0.44 AML other m 2012-06-28T08:19:20.20
IV.IVPL.HHN. ML:3.9 0.013349999999999999 0.48 AML other m 2012-06-28T08:19:22.69
IV.JOPP.HHE. ML:2.7 0.0004005 0.52 AML other m 2012-06-28T08:19:30.13
IV.JOPP.HHN. ML:2.8 0.00047950000000000005 0.54 AML other m 2012-06-28T08:19:31.69
IV.MCSR.HHN. ML:3.4 0.00837 0.36 AML other m 2012-06-28T08:19:08.54
IV.MCSR.HHE. ML:3.5 0.01192 0.9 AML other m 2012-06-28T08:19:08.23
IV.MILZ.HHE. ML:3.1 0.0023250000000000002 0.46 AML other m 2012-06-28T08:19:20.14
IV.MILZ.HHN. ML:3.0 0.0018549999999999999 0.32 AML other m 2012-06-28T08:19:14.02
IV.MPNC.HHE. ML:3.5 0.008145 0.46 AML other m 2012-06-28T08:19:10.58
IV.MPNC.HHN. ML:3.2 0.00468 0.74 AML other m 2012-06-28T08:19:16.81
IV.MSFR.HHN. ML:2.7 0.001127 0.88 AML other m 2012-06-28T08:19:19.24
IV.MSFR.HHE. ML:2.6 0.0007705 0.66 AML other m 2012-06-28T08:19:21.92
IV.MSRU.HHE. ML:3.1 0.002215 1.12 AML other m 2012-06-28T08:19:16.43
IV.MSRU.HHN. ML:2.9 0.0014199999999999998 0.4 AML other m 2012-06-28T08:19:14.83
IV.NOV.HHN. ML:3.3 0.007855000000000001 0.34 AML other m 2012-06-28T08:19:06.81
IV.NOV.HHE. ML:3.2 0.00734 0.6 AML other m 2012-06-28T08:19:08.15
IV.PLAC.HHE. ML:2.9 0.000435 0.86 AML other m 2012-06-28T08:19:45.51
IV.PLAC.HHN. ML:3.0 0.000518 1.58 AML other m 2012-06-28T08:19:43.12
IV.SOI.EHE. ML:2.6 0.0004815 0.44 AML other m 2012-06-28T08:19:30.14
IV.SOI.EHN. ML:2.7 0.0005480000000000001 0.9 AML other m 2012-06-28T08:19:33.66
IV.SSY.HHN. ML:3.6 0.00816 0.24 AML other m 2012-06-28T08:19:16.25
IV.SSY.HHE. ML:3.2 0.0027800000000000004 0.26 AML other m 2012-06-28T08:19:16.26
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