Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 4.0 on date 27-10-2002 and time 08:32:07 (Italy) in region 6 km NW Sant'Alfio (CT)

A magnitude Md 4.0 earthquake occured in region: 6 km NW Sant'Alfio (CT), on

  • 27-10-2002 07:32:07 (UTC)
  • 27-10-2002 08:32:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.79, 15.11 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
Sant'Alfio CT 6 1582 1582
Piedimonte Etneo CT 6 3963 5545
Linguaglossa CT 6 5403 10948
Milo CT 8 1087 12035
Mascali CT 8 14282 26317
Fiumefreddo di Sicilia CT 9 9623 35940
Giarre CT 10 27659 63599
Castiglione di Sicilia CT 10 3215 66814
Riposto CT 11 14838 81652
Zafferana Etnea CT 11 9517 91169
Calatabiano CT 11 5308 96477
Santa Venerina CT 12 8592 105069
Gaggi ME 13 3184 108253
Francavilla di Sicilia ME 13 3945 112198
Motta Camastra ME 13 845 113043
Moio Alcantara ME 13 717 113760
Malvagna ME 15 733 114493
Graniti ME 15 1492 115985
Giardini-Naxos ME 16 9415 125400
Castelmola ME 17 1088 126488
Taormina ME 17 10960 137448
Randazzo CT 17 10900 148348
Roccella Valdemone ME 18 666 149014
Santa Domenica Vittoria ME 19 980 149994
Mongiuffi Melia ME 19 600 150594
Trecastagni CT 20 10910 161504
Pedara CT 20 14102 175606
Letojanni ME 20 2861 178467

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Acireale (52622 inhabitants)
32 Km N of Catania (314555 inhabitants)
59 Km SW of Reggio di Calabria (183035 inhabitants)
60 Km SW of Messina (238439 inhabitants)
83 Km N of Siracusa (122291 inhabitants)
98 Km E of Caltanissetta (63360 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 4.0
ML-MEDNET 4.3 		2002-10-27
07:32:07		 37.79 15.11 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 456249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-10-27 07:32:07 ± 0.142
Latitude 37.79 ± 0.01
Longitude 15.11 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 456249

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) 1705.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
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) 0.08427
Number of stations at which the event was observed 44
Number of stations from which data was used for origin computation 44
Magnitudes information

Md:4

Field Value
Value 4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 456249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:11:55

ML:4.3

Field Value
Value 4.3
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 456249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:38:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRMO.Z. 2002-10-27T07:34:30.17 10.0 undecidable manual PN 340 0.0843 7.2 0
--.CTI.Z. 2002-10-27T07:34:17.67 10.0 undecidable manual PN 344 0.0778 4.58 0
--.ERBM.Z. 2002-10-27T07:34:08.55 10.0 undecidable manual PN 333 0.0676 11.02 0
--.GSCL.Z. 2002-10-27T07:34:06.90 10.0 undecidable manual PN 334 0.0665 10.23 0
--.ZCCA.Z. 2002-10-27T07:34:03.66 10.0 undecidable manual PN 336 0.0653 9.58 0
--.BDI.Z. 2002-10-27T07:34:02.51 10.0 undecidable manual PN 333 0.0642 10.13 0
--.VMG.Z. 2002-10-27T07:33:53.21 10.0 undecidable manual PN 337 0.0605 6.39 0
--.SFI.Z. 2002-10-27T07:33:51.61 10.0 undecidable manual PN 339 0.0593 6.73 0
--.CSNT.Z. 2002-10-27T07:33:48.70 10.0 undecidable manual PN 334 0.0573 6.13 0
--.FSSB.Z. 2002-10-27T07:33:46.95 10.0 undecidable manual PN 344 0.0554 8.01 0
--.SNTG.Z. 2002-10-27T07:33:36.68 10.0 undecidable manual PN 344 0.0513 3.95 0
--.ASS.Z. 2002-10-27T07:33:36.99 10.0 undecidable manual PN 341 0.0503 5.82 0
--.MNS.Z. 2002-10-27T07:33:29.83 10.0 undecidable manual PN 339 0.0445 7.41 0
--.AQU.Z. 2002-10-27T07:33:25.29 10.0 undecidable manual PN 344 0.0427 5.75 0
--.PTQR.Z. 2002-10-27T07:33:21.65 10.0 undecidable manual PN 343 0.0398 6.46 0
--.RNI2.Z. 2002-10-27T07:33:11.69 10.0 undecidable manual PN 350 0.0358 2.66 0
--.CPI2.Z. 2002-10-27T07:33:09.19 10.0 undecidable manual PN 351 0.0345 2.05 0
--.FGMS.Z. 2002-10-27T07:33:08.88 10.0 undecidable manual PN 9 0.0357 0 0
--.RGNG.Z. 2002-10-27T07:33:08.71 10.0 undecidable manual PN 5 0.0351 0.78 0
--.FG5.Z. 2002-10-27T07:33:05.12 10.0 undecidable manual PN 2 0.0314 2.77 0
--.BRT.Z. 2002-10-27T07:33:02.62 10.0 undecidable manual PN 26 0.0311 0.7 0
--.LCI.Z. 2002-10-27T07:33:01.94 10.0 undecidable manual PN 41 0.031 0.2 0
--.MRLC.Z. 2002-10-27T07:32:57.97 10.0 undecidable manual PN 5 0.0267 2.67 0
--.CSSN.Z. 2002-10-27T07:32:57.54 10.0 undecidable manual PN 359 0.0276 0.99 0
--.SGO.Z. 2002-10-27T07:32:53.50 10.0 undecidable manual PN 3 0.0249 0.59 0
--.SLCN.Z. 2002-10-27T07:32:51.69 10.0 undecidable manual PN 9 0.0236 1.18 0
--.ORI.Z. 2002-10-27T07:32:49.55 10.0 undecidable manual PN 24 0.0223 1.02 0.3
--.MGR.Z. 2002-10-27T07:32:46.19 10.0 negative manual PN 8 0.0213 -0.77 0.4
--.ERC.Z. 2002-10-27T07:32:43.40 10.0 undecidable manual PN 278 0.018 1.45 1
--.TDS.Z. 2002-10-27T07:32:42.71 10.0 undecidable manual PN 27 0.0189 -0.52 1
--.USI.Z. 2002-10-27T07:32:37.74 10.0 undecidable manual PN 302 0.0159 -1.01 1.3
--.CLTB.Z. 2002-10-27T07:32:36.68 10.0 undecidable manual PN 262 0.0136 1.44 1.9
--.MPG.Z. 2002-10-27T07:32:34.25 10.0 undecidable manual PN 285 0.0129 0.14 2
--.MCT.Z. 2002-10-27T07:32:33.22 10.0 undecidable manual PN 262 0.0108 2.31 2.5
--.FAVR.Z. 2002-10-27T07:32:32.43 10.0 undecidable manual PN 246 0.0113 0.74 2.5
--.AGST.Z. 2002-10-27T07:32:27.95 10.0 undecidable manual SG 170 0.0049 0.04 3.3
--.GIB.Z. 2002-10-27T07:32:24.92 10.0 undecidable manual PG 283 0.0079 -0.59 3
--.SOI.Z. 2002-10-27T07:32:24.41 10.0 negative manual PG 69 0.0071 0.41 3.3
--.SLNA.Z. 2002-10-27T07:32:23.39 10.0 undecidable manual PG 344 0.0071 -0.64 3.1
--.CSLB.Z. 2002-10-27T07:32:23.94 10.0 undecidable manual PG 280 0.0075 -0.94 3.1
--.MEU.Z. 2002-10-27T07:32:21.90 10.0 undecidable manual PG 198 0.0064 -1.44 3.3
--.SCLL.Z. 2002-10-27T07:32:21.34 10.0 negative manual PG 45 0.0059 -0.24 3.3
--.AGST.Z. 2002-10-27T07:32:19.17 10.0 undecidable manual PG 170 0.0049 -0.16 3.3
--.MSI.Z. 2002-10-27T07:32:19.22 10.0 negative manual PG 40 0.0049 -0.04 3.3
--.MTTG.Z. 2002-10-27T07:32:19.40 10.0 negative manual PG 65 0.0045 0.33 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download