Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 26-08-2017 and time 23:02:08 (Italy) in region 3 km E Adrano (CT)

A magnitude ML 2.1 earthquake occured in region: 3 km E Adrano (CT), on

  • 26-08-2017 21:02:08 (UTC)
  • 26-08-2017 23:02:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6730, 14.8670 at 21 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
Adrano CT 3 36122 36122
Biancavilla CT 4 24007 60129
Santa Maria di Licodia CT 7 7641 67770
Ragalna CT 8 3924 71694
Paternò CT 11 48228 119922
Centuripe EN 12 5470 125392
Bronte CT 13 19172 144564
Belpasso CT 13 28108 172672
Nicolosi CT 16 7463 180135
Camporotondo Etneo CT 17 5023 185158
Maletto CT 18 3920 189078
San Pietro Clarenza CT 18 7743 196821
Pedara CT 18 14102 210923
Catenanuova EN 19 4866 215789
Trecastagni CT 20 10910 226699
Mascalucia CT 20 31958 258657
Motta Sant'Anastasia CT 20 12116 270773

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Catania (314555 inhabitants)
27 Km W of Acireale (52622 inhabitants)
74 Km E of Caltanissetta (63360 inhabitants)
78 Km NW of Siracusa (122291 inhabitants)
84 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km SW of Messina (238439 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
86 Km NE of Vittoria (63339 inhabitants)
87 Km NE of Gela (75827 inhabitants)
91 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 2.1 2017-08-26
21:02:08		 37.6733 14.867 21 2018-07-06
15:40:36		 Bollettino Sismico Italiano INGV 53579741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-26 21:02:08 ± 0.15
Latitude 37.6733 ± 0.0063
Longitude 14.8670 ± 0.0148
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53579741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 893
Semi-minor axis of confidence ellipse (meter) 881
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 1.45960
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 53579741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-02-05 13:08:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2017-08-26T21:02:35.23 0.1 positive manual P 57 162.0156 54 0.54 64
IV.MEU.SHZ. 2017-08-26T21:02:29.00 0.3 undecidable manual S 183 62.493 101 0.8 56
IV.SOI.EHZ. 2017-08-26T21:02:27.81 0.1 positive manual P 67 112.998 96 0.09 83
IV.MSRU.HHZ. 2017-08-26T21:02:23.18 0.3 undecidable manual P 40 86.247 98 -0.44 62
IV.IVPL.HHZ. 2017-08-26T21:02:22.69 0.1 positive manual P 7 78.5658 99 0.24 87
IV.MUCR.HHE. 2017-08-26T21:02:22.90 0.6 undecidable manual S 1 41.0256 109 0.24 47
IV.HLNI.HHE. 2017-08-26T21:02:21.80 0.6 undecidable manual S 179 36.0417 112 0.38 46
IV.EPOZ.HHZ. 2017-08-26T21:02:21.29 0.6 undecidable manual S 90 28.2495 119 1.76 23
IV.MNO.SHZ. 2017-08-26T21:02:20.80 0.6 undecidable manual S 332 32.3454 115 0.3 47
IV.RAFF.HHZ. 2017-08-26T21:02:20.70 0.1 negative manual P 222 66.8775 100 0.03 93
IV.GALF.HHZ. 2017-08-26T21:02:20.49 0.6 undecidable manual S 279 26.6511 120 1.32 32
IV.MEU.SHZ. 2017-08-26T21:02:19.48 0.1 positive manual P 183 62.493 101 -0.52 85
IV.MSFR.HHZ. 2017-08-26T21:02:17.35 0.1 positive manual P 329 46.7199 106 -0.29 91
IV.EPZF.HHZ. 2017-08-26T21:02:17.67 0.6 undecidable manual S 357 16.7721 136 0.61 45
IV.AIO.HHZ. 2017-08-26T21:02:17.36 0.1 negative manual P 44 46.0206 106 -0.18 94
IV.MUCR.HHE. 2017-08-26T21:02:16.60 0.1 positive manual P 1 41.0256 109 -0.2 94
IV.HLNI.HHE. 2017-08-26T21:02:15.61 0.1 positive manual P 179 36.0417 112 -0.48 90
IV.EPOZ.HHZ. 2017-08-26T21:02:15.17 0.1 undecidable manual P 90 28.2495 119 0.18 96
IV.MNO.SHZ. 2017-08-26T21:02:15.48 0.1 positive manual P 332 32.3454 115 -0.08 98
IV.ESML.HHE. 2017-08-26T21:02:15.54 0.6 undecidable manual S 170 6.1938 161 -0.04 51
IV.ESLN.HHZ. 2017-08-26T21:02:15.70 0.6 undecidable manual S 77 9.6792 152 -0.24 49
IV.GALF.HHZ. 2017-08-26T21:02:14.96 0.3 undecidable manual P 279 26.6511 120 0.17 73
IV.EPZF.HHZ. 2017-08-26T21:02:13.20 0.3 undecidable manual P 357 16.7721 136 -0.37 71
IV.EMSG.HHZ. 2017-08-26T21:02:13.47 0.3 undecidable manual P 24 17.871 134 -0.23 73
IV.ESLN.HHZ. 2017-08-26T21:02:12.76 0.1 positive manual P 77 9.6792 152 -0.17 100
IV.ESML.HHE. 2017-08-26T21:02:12.37 0.1 negative manual P 170 6.1938 161 -0.35 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHN. ML:2.1 0.0007304999999999999 0.32 AML other m 2017-08-26T21:02:18.39
IV.EPZF.HHE. ML:2.3 0.001295 0.32 AML other m 2017-08-26T21:02:19.62
IV.EPOZ.HHE. ML:2.3 0.0008145 1.34 AML other m 2017-08-26T21:02:23.72
IV.EMSG.HHN. ML:2.4 0.0013199999999999998 1.14 AML other m 2017-08-26T21:02:23.27
IV.EPOZ.HHN. ML:2.2 0.000611 0.42 AML other m 2017-08-26T21:02:23.73
IV.EMSG.HHE. ML:2.3 0.00106 0.72 AML other m 2017-08-26T21:02:25.41
IV.AIO.HHN. ML:1.6 0.00010625 0.42 AML other m 2017-08-26T21:02:26.62
IV.AIO.HHE. ML:1.6 0.00011169999999999999 0.26 AML other m 2017-08-26T21:02:28.44
IV.MEU.SHE. ML:0.0 0.0004525 1.76 AML other m 2017-08-26T21:02:28.92
IV.MEU.SHN. ML:0.0 0.00021 0.24 AML other m 2017-08-26T21:02:31.26
IV.RAFF.HHN. ML:1.9 0.00014700000000000002 0.44 AML other m 2017-08-26T21:02:32.74
IV.RAFF.HHE. ML:2.1 0.00021050000000000002 0.68 AML other m 2017-08-26T21:02:32.85
IV.IVPL.HHN. ML:2.6 0.0005449999999999999 0.42 AML other m 2017-08-26T21:02:36.07
IV.IVPL.HHE. ML:2.6 0.000497 0.42 AML other m 2017-08-26T21:02:37.20
IV.PLAC.HHN. ML:1.7 0.00001935 0.86 AML other m 2017-08-26T21:02:59.78
IV.PLAC.HHE. ML:1.8 0.000024550000000000004 0.48 AML other m 2017-08-26T21:03:02.15
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download