Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.3 on date 17-03-1990 and time 02:34:07 (Italy) in region 4 km NW Nicolosi (CT)

A magnitude Md 2.3 earthquake occured in region: 4 km NW Nicolosi (CT), on

  • 17-03-1990 01:34:07 (UTC)
  • 17-03-1990 02:34:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6330, 14.9900 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
Nicolosi CT 4 7463 7463
Ragalna CT 4 3924 11387
Belpasso CT 5 28108 39495
Pedara CT 7 14102 53597
Camporotondo Etneo CT 7 5023 58620
San Pietro Clarenza CT 7 7743 66363
Trecastagni CT 8 10910 77273
Mascalucia CT 9 31958 109231
Santa Maria di Licodia CT 9 7641 116872
Tremestieri Etneo CT 10 20589 137461
Viagrande CT 10 8563 146024
Paternò CT 10 48228 194252
Gravina di Catania CT 10 25838 220090
Biancavilla CT 11 24007 244097
San Giovanni la Punta CT 11 23060 267157
Aci Bonaccorsi CT 11 3524 270681
Sant'Agata li Battiati CT 11 9479 280160
Zafferana Etnea CT 12 9517 289677
Aci Sant'Antonio CT 12 17984 307661
Misterbianco CT 12 49410 357071
San Gregorio di Catania CT 13 11966 369037
Valverde CT 13 7840 376877
Motta Sant'Anastasia CT 13 12116 388993
Aci Catena CT 14 29851 418844
Adrano CT 14 36122 454966
Santa Venerina CT 15 8592 463558
Milo CT 15 1087 464645
Acireale CT 16 52622 517267
Aci Castello CT 16 18723 535990
Catania CT 17 314555 850545
Sant'Alfio CT 19 1582 852127

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Acireale (52622 inhabitants)
17 Km NW of Catania (314555 inhabitants)
69 Km NW of Siracusa (122291 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
80 Km SW of Messina (238439 inhabitants)
82 Km N of Ragusa (73313 inhabitants)
83 Km E of Caltanissetta (63360 inhabitants)
86 Km NE of Vittoria (63339 inhabitants)
88 Km N of Modica (54633 inhabitants)
91 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 2.3
ML-VAX 1.5 		1990-03-17
01:34:07		 37.633 14.99 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 112099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-03-17 01:34:07 ± 0.215
Latitude 37.6330 ± 0.0109
Longitude 14.9900 ± 0.0193
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 112099

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) 2084.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00340
Epicentral distance of station farthest from the epicenter (degree) 0.00850
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 112099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:44:12

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 112099
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
--.SOI.Z. 1990-03-17T01:34:40.99 10.0 undecidable manual SG 61 0.9435 0.56 0.5
--.GIB.Z. 1990-03-17T01:34:38.00 10.0 undecidable manual SG 295 0.8325 1.03 0.3
--.ATN.Z. 1990-03-17T01:34:30.13 10.0 undecidable manual SG 35 0.6327 -0.52 0.6
--.PZI.Z. 1990-03-17T01:34:28.84 10.0 undecidable manual SG 183 0.5772 0.26 0.7
--.MEU.Z. 1990-03-17T01:34:27.74 10.0 undecidable manual SG 193 0.5328 0.49 0.6
--.SA1.Z. 1990-03-17T01:34:27.91 10.0 undecidable manual PG 352 0.9324 1.76 0.1
--.SOI.Z. 1990-03-17T01:34:26.78 10.0 undecidable manual PG 61 0.9435 0.42 1.3
--.GIB.Z. 1990-03-17T01:34:24.00 10.0 undecidable manual PG 295 0.8325 -0.36 1.5
--.MNO.Z. 1990-03-17T01:34:22.32 10.0 undecidable manual SG 321 0.3774 0.46 0.6
--.PZI.Z. 1990-03-17T01:34:19.46 10.0 undecidable manual PG 183 0.5772 -0.06 1.8
--.ATN.Z. 1990-03-17T01:34:19.61 10.0 undecidable manual PG 35 0.6327 -1.1 0.7
--.MEU.Z. 1990-03-17T01:34:18.46 10.0 undecidable manual PG 193 0.5328 -0.29 1.7
--.MNO.Z. 1990-03-17T01:34:15.00 10.0 negative manual PG 321 0.3774 -0.64 2.6
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