Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 12-12-2018 and time 16:30:17 (UTC) in region 3 km S Riposto (CT)

A magnitude ML 2.0 earthquake occured in region: 3 km S Riposto (CT), on

  • 12-12-2018 16:30:17 (UTC)
  • 12-12-2018 17:30:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7030, 15.2090 at 15 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
Riposto CT 3 14838 14838
Giarre CT 4 27659 42497
Santa Venerina CT 6 8592 51089
Mascali CT 6 14282 65371
Sant'Alfio CT 7 1582 66953
Milo CT 9 1087 68040
Zafferana Etnea CT 9 9517 77557
Fiumefreddo di Sicilia CT 10 9623 87180
Acireale CT 11 52622 139802
Piedimonte Etneo CT 12 3963 143765
Aci Catena CT 13 29851 173616
Aci Sant'Antonio CT 13 17984 191600
Calatabiano CT 14 5308 196908
Viagrande CT 14 8563 205471
Aci Bonaccorsi CT 15 3524 208995
Trecastagni CT 15 10910 219905
Valverde CT 16 7840 227745
Pedara CT 16 14102 241847
Linguaglossa CT 17 5403 247250
Giardini-Naxos ME 17 9415 256665
San Giovanni la Punta CT 17 23060 279725
Aci Castello CT 17 18723 298448
San Gregorio di Catania CT 18 11966 310414
Gaggi ME 18 3184 313598
Taormina ME 18 10960 324558
Tremestieri Etneo CT 18 20589 345147
Castelmola ME 18 1088 346235
Nicolosi CT 19 7463 353698
Sant'Agata li Battiati CT 20 9479 363177
Mascalucia CT 20 31958 395135

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Acireale (52622 inhabitants)
25 Km NE of Catania (314555 inhabitants)
59 Km SW of Reggio di Calabria (183035 inhabitants)
63 Km SW of Messina (238439 inhabitants)
72 Km N of Siracusa (122291 inhabitants)
96 Km NE of Ragusa (73313 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.0 2018-12-12
16:30:17		 37.7028 15.209 15 2019-06-04
09:16:10		 Bollettino Sismico Italiano INGV 65728631
Reviewed
Rev100 		ML 1.7 2018-12-12
16:30:17		 37.6942 15.2783 10 2018-12-12
16:37:29		 Sala Sismica INGV-Roma 63868391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-12 16:30:17 ± 0.17
Latitude 37.7028 ± 0.0081
Longitude 15.2090 ± 0.0136
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 65728631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1161
Semi-minor axis of confidence ellipse (meter) 426
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 1160.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.81658
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 65728631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-19 14:59:57

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 63868391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-12 16:37:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2018-12-12T16:30:44.83 0.6 undecidable manual S 205 90.6426 93 0.94 33
IV.AGST.EHE. 2018-12-12T16:30:33.61 0.3 undecidable manual S 178 49.5171 96 0.67 61
IV.HLNI.HHZ. 2018-12-12T16:30:33.10 0.6 undecidable manual S 217 49.2174 96 0.24 46
IV.HAGA.HHZ. 2018-12-12T16:30:32.96 0.6 undecidable manual S 186 46.62 97 0.8 39
IV.HMDC.HHZ. 2018-12-12T16:30:32.46 0.1 undecidable manual P 205 90.6426 93 -0.15 87
IV.IVPL.HHE. 2018-12-12T16:30:31.26 0.3 undecidable manual P 345 77.367 94 0.71 58
IV.GALF.HHZ. 2018-12-12T16:30:28.12 0.1 undecidable manual P 271 56.3991 95 0.78 77
IV.AIO.HHE. 2018-12-12T16:30:27.94 0.6 undecidable manual S 4 29.8479 103 0.2 49
IV.SSY.HHZ. 2018-12-12T16:30:27.92 0.1 undecidable manual P 191 61.6938 95 -0.22 91
IV.MPNC.HHN. 2018-12-12T16:30:26.63 0.3 undecidable manual P 14 50.8158 96 0.15 71
IV.MUCR.HHE. 2018-12-12T16:30:26.06 0.3 undecidable manual P 322 47.8188 97 0.04 73
IV.AGST.EHE. 2018-12-12T16:30:26.12 0.3 undecidable manual P 178 49.5171 96 -0.17 70
IV.HLNI.HHZ. 2018-12-12T16:30:25.60 0.1 undecidable manual P 217 49.2174 96 -0.64 83
IV.HAGA.HHZ. 2018-12-12T16:30:25.56 0.1 positive manual P 186 46.62 97 -0.28 92
IV.EMCN.HNE. 2018-12-12T16:30:25.49 0.3 undecidable manual S 303 18.2706 117 0.67 65
IV.ESLN.HHZ. 2018-12-12T16:30:25.13 0.6 undecidable manual S 267 20.6682 113 -0.27 49
IV.EPZF.HHZ. 2018-12-12T16:30:24.13 0.1 undecidable manual P 294 33.6441 101 0.26 95
IV.ESML.HHE. 2018-12-12T16:30:23.04 0.3 undecidable manual P 252 30.4473 103 -0.34 70
IV.EPOZ.HHZ. 2018-12-12T16:30:22.54 0.6 undecidable manual S 208 3.8961 163 0.27 50
IV.AIO.HHE. 2018-12-12T16:30:22.89 0.1 positive manual P 4 29.8479 103 -0.4 92
IV.EMSG.HHN. 2018-12-12T16:30:22.70 0.1 undecidable manual P 300 26.2515 106 -0.05 100
IV.EMCN.HNE. 2018-12-12T16:30:21.36 0.3 undecidable manual P 303 18.2706 117 -0.24 73
IV.ESLN.HHZ. 2018-12-12T16:30:21.24 0.1 undecidable manual P 267 20.6682 113 -0.69 85
IV.EPOZ.HHZ. 2018-12-12T16:30:19.70 0.1 negative manual P 208 3.8961 163 -0.43 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPOZ.HHE. ML:2.3 0.0025110640000000004 0.192 AML other m 2018-12-12T16:30:22.59
IV.EPOZ.HHN. ML:2.6 0.0054570915000000005 0.1664 AML other m 2018-12-12T16:30:22.70
IV.EPZF.HHE. ML:2.0 0.00041636805 0.4608 AML other m 2018-12-12T16:30:32.88
IV.HAGA.HHE. ML:1.8 0.0001699137 0.6144 AML other m 2018-12-12T16:30:33.46
IV.HAGA.HHN. ML:1.4 0.000066272495 0.1152 AML other m 2018-12-12T16:30:33.85
IV.HLNI.HHN. ML:1.4 0.000071950975 0.3072 AML other m 2018-12-12T16:30:34.09
IV.SSY.HHE. ML:2.2 0.00027396642500000004 0.3968 AML other m 2018-12-12T16:30:37.63
IV.HMDC.HHN. ML:1.9 0.00009565938 0.2944 AML other m 2018-12-12T16:30:45.63
IV.HMDC.HHE. ML:1.8 0.000082004545 0.256 AML other m 2018-12-12T16:30:47.01
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download