Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 17-03-2023 and time 02:12:58 (UTC) in region 5 km SW Biancavilla (CT)

A magnitude ML 2.1 earthquake occured in region: 5 km SW Biancavilla (CT), on

  • 17-03-2023 02:12:58 (UTC)
  • 17-03-2023 03:12:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6100, 14.8290 at 0 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
Biancavilla CT 5 24007 24007
Santa Maria di Licodia CT 5 7641 31648
Adrano CT 6 36122 67770
Paternò CT 7 48228 115998
Centuripe EN 8 5470 121468
Ragalna CT 10 3924 125392
Catenanuova EN 13 4866 130258
Belpasso CT 13 28108 158366
Camporotondo Etneo CT 16 5023 163389
Motta Sant'Anastasia CT 16 12116 175505
Regalbuto EN 17 7277 182782
Nicolosi CT 18 7463 190245
San Pietro Clarenza CT 18 7743 197988
Misterbianco CT 19 49410 247398
Bronte CT 20 19172 266570

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Catania (314555 inhabitants)
30 Km W of Acireale (52622 inhabitants)
69 Km E of Caltanissetta (63360 inhabitants)
74 Km NW of Siracusa (122291 inhabitants)
77 Km N of Ragusa (73313 inhabitants)
78 Km NE of Vittoria (63339 inhabitants)
79 Km NE of Gela (75827 inhabitants)
84 Km N of Modica (54633 inhabitants)
91 Km SW of Reggio di Calabria (183035 inhabitants)
91 Km SW of Messina (238439 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 2023-03-17
02:12:58		 37.6097 14.8292 0 2024-03-01
17:18:18		 Bollettino Sismico Italiano INGV 124002741
Reviewed
Rev200 		ML 1.6 2023-03-17
02:12:57		 37.643 14.834 2 2023-12-13
15:56:21		 Sala Operativa INGV_OE (Catania) 115455111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-17 02:12:58 ± 0.19
Latitude 37.6097 ± 0.0081
Longitude 14.8292 ± 0.0114
Depth (km) 0 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124002741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 960
Semi-minor axis of confidence ellipse (meter) 900
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 960.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 124002741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-13 15:56:07

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 115455111
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-03-17 02:24:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHE. 2023-03-17T02:13:08.74 0.6 undecidable manual S 173 29.2485 90 0.36 48
IV.GALF.HHZ. 2023-03-17T02:13:04.05 0.3 undecidable manual P 296 25.6521 90 0.67 66
IV.EPOZ.HHN. 2023-03-17T02:13:04.80 0.3 undecidable manual P 78 32.3454 90 0.08 76
IV.ENIC.HHE. 2023-03-17T02:13:04.48 0.6 undecidable manual S 82 17.0718 91 0.31 50
IV.HLNI.HHE. 2023-03-17T02:13:03.60 0.3 undecidable manual P 173 29.2485 90 -0.49 70
IV.EVRN.HHE. 2023-03-17T02:13:03.55 0.3 undecidable manual P 72 28.3494 90 -0.37 72
IV.ESCV.HHZ. 2023-03-17T02:13:03.91 0.6 undecidable manual S 355 15.2736 91 0.36 49
IV.EMPL.HHE. 2023-03-17T02:13:03.64 0.6 undecidable manual S 58 14.5743 91 0.33 50
IV.ENIC.HHE. 2023-03-17T02:13:02.19 0.1 undecidable manual P 82 17.0718 91 0.52 95
IV.ESLN.HHZ. 2023-03-17T02:13:01.67 0.3 undecidable manual P 54 15.7731 91 0.26 76
IV.EMPL.HHE. 2023-03-17T02:13:00.95 0.3 undecidable manual P 58 14.5743 91 -0.22 76
IV.ESML.HNZ. 2023-03-17T02:13:00.10 0.6 undecidable manual S 78 4.4955 92 0.29 51
IV.ECHR.HHE. 2023-03-17T02:13:00.03 0.1 undecidable manual P 41 11.2776 91 -0.47 97
IV.ESCV.HHZ. 2023-03-17T02:13:00.75 0.3 undecidable manual P 355 15.2736 91 -0.56 70
IV.ESML.HNZ. 2023-03-17T02:12:58.76 0.1 negative manual P 78 4.4955 92 -0.39 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMPL.HHE. ML:2.2 0.002085 0.82 AML other m 2023-03-17T02:13:08.37
IV.EMPL.HHN. ML:2.3 0.0024950000000000003 0.24 AML other m 2023-03-17T02:13:09.26
IV.ENIC.HHN. ML:2.0 0.0010305 0.78 AML other m 2023-03-17T02:13:10.59
IV.ENIC.HHE. ML:2.0 0.0009355 1.46 AML other m 2023-03-17T02:13:12.88
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