Earthquake with magnitude of Md 3.5 on date 27-10-2002 and time 17:47:52 (Italy) in region 2 km NW Sant'Alfio (CT)

A magnitude Md 3.5 earthquake occured in region: 2 km NW Sant'Alfio (CT), on

  • 27-10-2002 16:47:52 (UTC)
  • 27-10-2002 17:47:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.76, 15.13 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Alfio CT 2 1582 1582
Milo CT 4 1087 2669
Giarre CT 6 27659 30328
Mascali CT 6 14282 44610
Zafferana Etnea CT 7 9517 54127
Riposto CT 7 14838 68965
Piedimonte Etneo CT 8 3963 72928
Santa Venerina CT 8 8592 81520
Fiumefreddo di Sicilia CT 8 9623 91143
Linguaglossa CT 10 5403 96546
Calatabiano CT 12 5308 101854
Castiglione di Sicilia CT 14 3215 105069
Gaggi ME 14 3184 108253
Trecastagni CT 16 10910 119163
Acireale CT 16 52622 171785
Viagrande CT 16 8563 180348
Giardini-Naxos ME 16 9415 189763
Pedara CT 16 14102 203865
Motta Camastra ME 16 845 204710
Aci Sant'Antonio CT 16 17984 222694
Francavilla di Sicilia ME 16 3945 226639
Aci Catena CT 17 29851 256490
Aci Bonaccorsi CT 17 3524 260014
Taormina ME 17 10960 270974
Castelmola ME 18 1088 272062
Moio Alcantara ME 18 717 272779
Graniti ME 18 1492 274271
Nicolosi CT 18 7463 281734
Valverde CT 19 7840 289574
Malvagna ME 19 733 290307
San Giovanni la Punta CT 20 23060 313367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
62 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
98 Km E of Caltanissetta (63360 inhabitants)
99 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
Rev 1000 Md 3.5
ML-VAX 3.2
2002-10-27
16:47:52
37.76 15.13 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 456469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-10-27 16:47:52 ± 0.296
Latitude 37.76 ± 0.02
Longitude 15.13 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 456469

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 3713
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00453
Epicentral distance of station farthest from the epicenter (degree) 0.02704
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 456469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:12:08

ML:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 456469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MRLC.Z. 2002-10-27T16:48:41.21 10.0 undecidable manual PN 5 0.027 0.94 0.7
--.SGO.Z. 2002-10-27T16:48:37.19 10.0 undecidable manual PN 2 0.0253 -0.25 1.1
--.MGR.Z. 2002-10-27T16:48:30.43 10.0 undecidable manual PN 7 0.0216 -1.49 0.4
--.TDS.Z. 2002-10-27T16:48:28.99 10.0 undecidable manual PN 26 0.0191 0.9 0.9
--.USI.Z. 2002-10-27T16:48:22.31 10.0 undecidable manual PN 302 0.0162 -1.35 0.6
--.CLTB.Z. 2002-10-27T16:48:21.76 10.0 undecidable manual PN 263 0.0137 1.92 0.3
--.GRI.Z. 2002-10-27T16:48:20.26 10.0 undecidable manual PN 43 0.0132 1.14 0.9
--.MPG.Z. 2002-10-27T16:48:19.35 10.0 undecidable manual PN 286 0.013 0.44 1.5
--.GIB.Z. 2002-10-27T16:48:10.90 10.0 undecidable manual PG 285 0.0081 -0.32 1.6
--.CSLB.Z. 2002-10-27T16:48:10.64 10.0 undecidable manual PG 282 0.0078 0.89 1.2
--.SOI.Z. 2002-10-27T16:48:10.29 10.0 undecidable manual PG 66 0.0071 1.78 0.4
--.SLNA.Z. 2002-10-27T16:48:08.38 10.0 undecidable manual PG 344 0.0075 -0.87 1.2
--.PZI.Z. 2002-10-27T16:48:05.83 10.0 undecidable manual PG 191 0.0064 -1.13 0.9
--.SCLL.Z. 2002-10-27T16:48:05.43 10.0 undecidable manual PG 42 0.0061 -0.96 1.1
--.MTTG.Z. 2002-10-27T16:48:03.21 10.0 undecidable manual PG 61 0.0046 -0.07 1.7
--.MSI.Z. 2002-10-27T16:48:03.60 10.0 undecidable manual PG 36 0.005 -1.07 1
--.AGST.Z. 2002-10-27T16:48:02.60 10.0 undecidable manual PG 171 0.0045 -0.48 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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