Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 10-10-2017 and time 01:29:48 (Italy) in region 1 km SW San Gregorio di Catania (CT)

A magnitude ML 1.0 earthquake occured in region: 1 km SW San Gregorio di Catania (CT), on

  • 09-10-2017 23:29:48 (UTC)
  • 10-10-2017 01:29:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.5580, 15.0980 at 25 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
San Gregorio di Catania CT 1 11966 11966
Sant'Agata li Battiati CT 2 9479 21445
San Giovanni la Punta CT 2 23060 44505
Tremestieri Etneo CT 3 20589 65094
Gravina di Catania CT 3 25838 90932
Valverde CT 4 7840 98772
Aci Castello CT 4 18723 117495
Mascalucia CT 4 31958 149453
Aci Bonaccorsi CT 5 3524 152977
Viagrande CT 6 8563 161540
Aci Sant'Antonio CT 6 17984 179524
Catania CT 6 314555 494079
Aci Catena CT 6 29851 523930
San Pietro Clarenza CT 7 7743 531673
Trecastagni CT 7 10910 542583
Pedara CT 7 14102 556685
Camporotondo Etneo CT 8 5023 561708
Acireale CT 9 52622 614330
Nicolosi CT 9 7463 621793
Misterbianco CT 9 49410 671203
Belpasso CT 11 28108 699311
Motta Sant'Anastasia CT 12 12116 711427
Santa Venerina CT 15 8592 720019
Zafferana Etnea CT 15 9517 729536
Ragalna CT 16 3924 733460
Paternò CT 17 48228 781688
Milo CT 19 1087 782775
Santa Maria di Licodia CT 20 7641 790416

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km N of Catania (314555 inhabitants)
9 Km SW of Acireale (52622 inhabitants)
58 Km N of Siracusa (122291 inhabitants)
77 Km NE of Ragusa (73313 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km SW of Messina (238439 inhabitants)
83 Km NE of Modica (54633 inhabitants)
84 Km NE of Vittoria (63339 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
93 Km NE of Gela (75827 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 1.0 2017-10-09
23:29:48		 37.5582 15.0977 25 2018-09-04
09:08:02		 Bollettino Sismico Italiano INGV 57644301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-10-09 23:29:48 ± 0.43
Latitude 37.5582 ± 0.0117
Longitude 15.0977 ± 0.0272
Depth (km) 25 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 57644301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2155
Semi-minor axis of confidence ellipse (meter) 1483
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 2150.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.13490
Epicentral distance of station farthest from the epicenter (degree) 0.40020
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 57644301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-27 11:25:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2017-10-09T23:30:04.41 0.6 undecidable manual S 183 44.4222 113 0.75 44
IV.AGST.EHZ. 2017-10-09T23:30:01.43 0.3 undecidable manual S 161 35.3424 119 -0.03 74
IV.HAGA.HHZ. 2017-10-09T23:30:00.37 0.3 undecidable manual S 171 30.747 123 -0.04 75
IV.HLNI.HHZ. 2017-10-09T23:30:00.22 0.3 undecidable manual S 221 30.5472 124 -0.16 78
IV.EPOZ.HHZ. 2017-10-09T23:29:57.78 0.3 undecidable manual S 32 14.9739 146 0.41 74
IV.SSY.HHZ. 2017-10-09T23:29:57.72 0.3 undecidable manual P 183 44.4222 113 0.45 71
IV.HLNI.HHZ. 2017-10-09T23:29:55.37 0.3 undecidable manual P 221 30.5472 124 -0.01 78
IV.AGST.EHZ. 2017-10-09T23:29:55.84 0.1 negative manual P 161 35.3424 119 -0.16 97
IV.HAGA.HHZ. 2017-10-09T23:29:55.30 0.1 undecidable manual P 171 30.747 123 -0.09 100
IV.EPOZ.HHZ. 2017-10-09T23:29:53.30 0.3 undecidable manual P 32 14.9739 146 -0.34 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AGST.EHE. ML:0.9 0.000022951244999999998 0.1024 AML other m 2017-10-09T23:30:02.12
IV.AGST.EHN. ML:1.0 0.00003465656 0.1536 AML other m 2017-10-09T23:30:02.33
IV.HLNI.HHN. ML:1.0 0.000036049999999999995 0.68 AML other m 2017-10-09T23:30:02.93
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