Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 23-06-2017 and time 22:36:41 (Italy) in region 3 km S Zafferana Etnea (CT)

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

  • 23-06-2017 20:36:41 (UTC)
  • 23-06-2017 22:36:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6700, 15.0950 at 5 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
Zafferana Etnea CT 3 9517 9517
Santa Venerina CT 4 8592 18109
Trecastagni CT 6 10910 29019
Viagrande CT 6 8563 37582
Pedara CT 6 14102 51684
Milo CT 6 1087 52771
Aci Sant'Antonio CT 8 17984 70755
Aci Bonaccorsi CT 8 3524 74279
Aci Catena CT 8 29851 104130
Nicolosi CT 9 7463 111593
Acireale CT 9 52622 164215
Sant'Alfio CT 10 1582 165797
San Giovanni la Punta CT 10 23060 188857
Valverde CT 10 7840 196697
Giarre CT 11 27659 224356
Tremestieri Etneo CT 11 20589 244945
Mascalucia CT 11 31958 276903
San Gregorio di Catania CT 12 11966 288869
Riposto CT 12 14838 303707
Sant'Agata li Battiati CT 12 9479 313186
Gravina di Catania CT 12 25838 339024
San Pietro Clarenza CT 12 7743 346767
Mascali CT 13 14282 361049
Aci Castello CT 13 18723 379772
Belpasso CT 13 28108 407880
Camporotondo Etneo CT 14 5023 412903
Ragalna CT 14 3924 416827
Piedimonte Etneo CT 17 3963 420790
Fiumefreddo di Sicilia CT 17 9623 430413
Misterbianco CT 18 49410 479823
Catania CT 18 314555 794378
Santa Maria di Licodia CT 19 7641 802019
Linguaglossa CT 20 5403 807422
Paternò CT 20 48228 855650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of Acireale (52622 inhabitants)
18 Km N of Catania (314555 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
70 Km N of Siracusa (122291 inhabitants)
71 Km SW of Messina (238439 inhabitants)
89 Km NE of Ragusa (73313 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
94 Km NE of Vittoria (63339 inhabitants)
95 Km N of Modica (54633 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 2017-06-23
20:36:41		 37.6695 15.0953 5 2018-07-06
11:13:34		 Bollettino Sismico Italiano INGV 51248241
Reviewed
Rev200 		ML 2.4 2017-06-23
20:36:41		 37.69 15.069 6 2018-01-23
10:14:10		 Sala Operativa INGV-OE (Catania) 47080871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-06-23 20:36:41 ± 0.09
Latitude 37.6695 ± 0.0045
Longitude 15.0953 ± 0.0080
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 51248241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 474
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.07374
Epicentral distance of station farthest from the epicenter (degree) 1.80764
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 51248241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-01-23 10:13:22

ML:2.4

Field Value
Value 2.4
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 47080871
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2017-06-23 21:13:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHZ. 2017-06-23T20:37:12.40 0.3 undecidable manual P 29 200.6436 38 -1.11 31
IV.PLAC.HHZ. 2017-06-23T20:37:06.26 0.3 undecidable manual P 53 145.743 50 0.63 50
IV.JOPP.HHZ. 2017-06-23T20:37:02.29 0.3 undecidable manual P 33 124.7862 50 -0.11 60
IV.IACL.HHZ. 2017-06-23T20:37:01.17 0.3 undecidable manual P 326 115.4955 50 0.2 60
IV.HPAC.HHZ. 2017-06-23T20:36:59.53 0.3 undecidable manual P 183 106.7154 50 -0.08 63
IV.SOI.EHZ. 2017-06-23T20:36:58.07 0.3 undecidable manual P 62 95.1381 50 0.24 62
IV.AGST.EHE. 2017-06-23T20:36:57.72 0.6 undecidable manual S 166 47.2194 50 0.37 44
IV.HMDC.HHE. 2017-06-23T20:36:56.03 0.3 undecidable manual P 199 83.4498 50 0 67
IV.HAGA.HHZ. 2017-06-23T20:36:56.62 0.6 undecidable manual S 173 43.0236 97 0.56 42
IV.IVPL.HHZ. 2017-06-23T20:36:55.53 0.1 undecidable manual P 353 79.0653 50 0.18 87
IV.RAFF.HHZ. 2017-06-23T20:36:55.96 0.3 undecidable manual P 233 81.3519 50 0.25 64
IV.HLNI.HHN. 2017-06-23T20:36:55.23 0.6 undecidable manual S 209 40.626 98 -0.03 48
IV.MPAZ.HHZ. 2017-06-23T20:36:55.71 0.3 undecidable manual P 68 85.8474 50 -0.69 56
IV.MSRU.HHZ. 2017-06-23T20:36:54.44 0.3 undecidable manual P 29 75.1692 50 -0.32 64
IV.MTTG.HHZ. 2017-06-23T20:36:53.44 0.3 undecidable manual P 55 64.5909 50 0.31 65
IV.MEU.SHE. 2017-06-23T20:36:52.68 0.3 undecidable manual P 201 66.1893 50 -0.69 58
IV.MSFR.HHZ. 2017-06-23T20:36:52.72 0.3 undecidable manual P 313 59.7957 50 0.33 65
IV.MNO.SHZ. 2017-06-23T20:36:51.05 0.6 undecidable manual P 310 45.5211 50 0.86 37
IV.AGST.EHE. 2017-06-23T20:36:50.20 0.1 undecidable manual P 166 47.2194 50 -0.25 91
IV.GALF.HHZ. 2017-06-23T20:36:50.81 0.3 undecidable manual P 276 46.62 50 0.46 65
IV.MUCR.HHZ. 2017-06-23T20:36:49.93 0.3 undecidable manual P 335 45.7209 50 -0.29 68
IV.HAGA.HHZ. 2017-06-23T20:36:49.60 0.1 undecidable manual P 173 43.0236 97 -0.1 94
IV.EMSG.HHZ. 2017-06-23T20:36:48.66 0.6 undecidable manual S 323 21.0678 104 0.08 49
IV.HLNI.HHN. 2017-06-23T20:36:48.74 0.3 undecidable manual P 209 40.626 98 -0.5 65
IV.AIO.HHN. 2017-06-23T20:36:47.74 0.1 undecidable manual P 20 35.5422 99 -0.49 88
IV.EPZF.HHZ. 2017-06-23T20:36:46.43 0.1 undecidable manual P 309 27.0507 101 -0.12 97
IV.EMSG.HHZ. 2017-06-23T20:36:45.45 0.1 undecidable manual P 323 21.0678 104 0.07 99
IV.ESLN.HHZ. 2017-06-23T20:36:45.24 0.6 undecidable manual S 284 10.9779 116 -0.02 51
IV.EPOZ.HHN. 2017-06-23T20:36:43.55 0.1 undecidable manual P 88 8.1807 123 0.56 90
IV.ESLN.HHZ. 2017-06-23T20:36:43.38 0.1 undecidable manual P 284 10.9779 116 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:2.0 0.0003834804 0.3328 AML other m 2017-06-23T20:36:57.67
IV.EPOZ.HHN. ML:2.7 0.009714258000000002 0.4096 AML other m 2017-06-23T20:36:47.12
IV.ESLN.HHE. ML:2.1 0.0019857464999999998 0.2432 AML other m 2017-06-23T20:36:47.50
IV.EPOZ.HHE. ML:2.7 0.008932246 0.3584 AML other m 2017-06-23T20:36:48.09
IV.EPZF.HHE. ML:1.9 0.0005211584 0.3584 AML other m 2017-06-23T20:36:55.32
IV.AIO.HHN. ML:1.9 0.0003121542 0.2944 AML other m 2017-06-23T20:36:55.80
IV.EMSG.HHE. ML:2.0 0.00080583535 0.2432 AML other m 2017-06-23T20:36:56.03
IV.EMSG.HHN. ML:2.1 0.0010603372 0.3968 AML other m 2017-06-23T20:36:56.10
IV.HLNI.HHN. ML:1.3 0.00007392936999999999 0.2432 AML other m 2017-06-23T20:36:56.61
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
Waveforms Seismic signals in miniseed + resp format Download