Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.4 on date 11-11-1988 and time 13:38:21 (Italy) in region 10 km W Zafferana Etnea (CT)

A magnitude Md 2.4 earthquake occured in region: 10 km W Zafferana Etnea (CT), on

  • 11-11-1988 12:38:21 (UTC)
  • 11-11-1988 13:38:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7330, 15.0030 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
Zafferana Etnea CT 10 9517 9517
Milo CT 10 1087 10604
Sant'Alfio CT 13 1582 12186
Ragalna CT 13 3924 16110
Santa Venerina CT 13 8592 24702
Nicolosi CT 13 7463 32165
Pedara CT 14 14102 46267
Trecastagni CT 15 10910 57177
Biancavilla CT 15 24007 81184
Viagrande CT 16 8563 89747
Belpasso CT 16 28108 117855
Giarre CT 16 27659 145514
Maletto CT 16 3920 149434
Bronte CT 16 19172 168606
Santa Maria di Licodia CT 16 7641 176247
Adrano CT 17 36122 212369
Randazzo CT 17 10900 223269
Mascali CT 17 14282 237551
Linguaglossa CT 17 5403 242954
Aci Bonaccorsi CT 18 3524 246478
Piedimonte Etneo CT 18 3963 250441
Aci Sant'Antonio CT 18 17984 268425
Riposto CT 18 14838 283263
San Pietro Clarenza CT 18 7743 291006
Mascalucia CT 18 31958 322964
Camporotondo Etneo CT 18 5023 327987
Tremestieri Etneo CT 18 20589 348576
Aci Catena CT 19 29851 378427
Moio Alcantara ME 19 717 379144
San Giovanni la Punta CT 19 23060 402204
Paternò CT 19 48228 450432
Fiumefreddo di Sicilia CT 19 9623 460055
Acireale CT 20 52622 512677
Castiglione di Sicilia CT 20 3215 515892
Gravina di Catania CT 20 25838 541730

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
71 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
87 Km E of Caltanissetta (63360 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
96 Km NE of Vittoria (63339 inhabitants)
99 Km N of Modica (54633 inhabitants)
100 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 		Md 2.4
ML-VAX 1.9 		1988-11-11
12:38:21		 37.733 15.003 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 81009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-11-11 12:38:21 ± 0.133
Latitude 37.7330 ± 0.0082
Longitude 15.0030 ± 0.0086
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 81009

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) 1181.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01392
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 81009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:16:13

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 81009
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(km) Takeoff_angle Residual Weight
--.GRI.Z. 1988-11-11T12:39:11.50 10.0 undecidable manual SN 44 1.5429 0.92 0.1
--.SOI.Z. 1988-11-11T12:38:53.46 10.0 undecidable manual SG 67 0.888 0.07 0.7
--.GRI.Z. 1988-11-11T12:38:51.00 10.0 undecidable manual PN 44 1.5429 1.06 0.1
--.GIB.Z. 1988-11-11T12:38:50.72 10.0 undecidable manual SG 288 0.8103 0.04 0.8
--.SC9.Z. 1988-11-11T12:38:49.00 10.0 undecidable manual SG 46 0.7659 -0.25 0.7
--.MEU.Z. 1988-11-11T12:38:45.23 10.0 undecidable manual SG 192 0.6327 0.18 0.7
--.ATN.Z. 1988-11-11T12:38:42.31 10.0 undecidable manual SG 40 0.555 -0.23 0.7
--.SOI.Z. 1988-11-11T12:38:39.67 10.0 undecidable manual PG 67 0.888 -0.34 1.5
--.GIB.Z. 1988-11-11T12:38:38.20 10.0 undecidable manual PG 288 0.8103 -0.43 1.3
--.SC9.Z. 1988-11-11T12:38:37.30 10.0 undecidable manual PG 46 0.7659 -0.33 1.6
--.MEU.Z. 1988-11-11T12:38:35.12 10.0 undecidable manual PG 192 0.6327 -0.08 2
--.MNO.Z. 1988-11-11T12:38:34.27 10.0 undecidable manual SG 309 0.3108 0.26 0.7
--.ATN.Z. 1988-11-11T12:38:33.23 10.0 undecidable manual PG 40 0.555 -0.52 1.1
--.MNO.Z. 1988-11-11T12:38:28.90 10.0 undecidable manual PG 309 0.3108 0.07 2
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