Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 11-04-1988 and time 01:37:43 (Italy) in region 7 km W Milo (CT)

A magnitude Md 2.5 earthquake occured in region: 7 km W Milo (CT), on

  • 10-04-1988 23:37:43 (UTC)
  • 11-04-1988 01:37:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7460, 15.0420 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
Milo CT 7 1087 1087
Zafferana Etnea CT 8 9517 10604
Sant'Alfio CT 9 1582 12186
Santa Venerina CT 11 8592 20778
Giarre CT 13 27659 48437
Mascali CT 14 14282 62719
Piedimonte Etneo CT 14 3963 66682
Linguaglossa CT 14 5403 72085
Pedara CT 14 14102 86187
Riposto CT 14 14838 101025
Nicolosi CT 15 7463 108488
Trecastagni CT 15 10910 119398
Fiumefreddo di Sicilia CT 16 9623 129021
Ragalna CT 16 3924 132945
Viagrande CT 16 8563 141508
Castiglione di Sicilia CT 17 3215 144723
Randazzo CT 17 10900 155623
Aci Sant'Antonio CT 17 17984 173607
Moio Alcantara ME 17 717 174324
Aci Bonaccorsi CT 17 3524 177848
Belpasso CT 18 28108 205956
Maletto CT 18 3920 209876
Aci Catena CT 18 29851 239727
Acireale CT 18 52622 292349
Calatabiano CT 19 5308 297657
Bronte CT 19 19172 316829
Tremestieri Etneo CT 19 20589 337418
Biancavilla CT 19 24007 361425
Mascalucia CT 19 31958 393383
San Pietro Clarenza CT 19 7743 401126
San Giovanni la Punta CT 19 23060 424186
Francavilla di Sicilia ME 19 3945 428131
Malvagna ME 19 733 428864
Santa Maria di Licodia CT 20 7641 436505
Valverde CT 20 7840 444345
Camporotondo Etneo CT 20 5023 449368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
67 Km SW of Reggio di Calabria (183035 inhabitants)
67 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
91 Km E of Caltanissetta (63360 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
99 Km NE of Vittoria (63339 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 2.5
ML-VAX 1.7 		1988-04-10
23:37:43		 37.746 15.042 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 66209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1988-04-10 23:37:43 ± 0.171
Latitude 37.7460 ± 0.0097
Longitude 15.0420 ± 0.0151
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 66209

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) 1710.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.01530
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 66209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:02:43

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 66209
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. 1988-04-10T23:38:15.88 10.0 undecidable manual SG 67 0.8547 1.33 0
--.CZI.Z. 1988-04-10T23:38:12.90 10.0 undecidable manual PN 29 1.6983 -1.28 0.1
--.PZI.Z. 1988-04-10T23:38:09.51 10.0 undecidable manual SG 186 0.6882 0.35 0.6
--.MEU.Z. 1988-04-10T23:38:07.63 10.0 undecidable manual SG 194 0.6549 -0.31 0.6
--.FAI.Z. 1988-04-10T23:38:07.61 10.0 undecidable manual PN 246 1.1766 0.48 1
--.ATN.Z. 1988-04-10T23:38:04.50 10.0 undecidable manual SG 38 0.5217 0.22 0.7
--.SOI.Z. 1988-04-10T23:38:01.42 10.0 undecidable manual PG 67 0.8547 -0.22 1.6
--.PZI.Z. 1988-04-10T23:37:58.35 10.0 undecidable manual PG 186 0.6882 -0.16 1.7
--.MEU.Z. 1988-04-10T23:37:57.49 10.0 undecidable manual PG 194 0.6549 -0.33 1.5
--.MNO.Z. 1988-04-10T23:37:57.80 10.0 undecidable manual SG 304 0.3219 0.19 0.7
--.ATN.Z. 1988-04-10T23:37:55.31 10.0 undecidable manual PG 38 0.5217 -0.13 1.8
--.MNO.Z. 1988-04-10T23:37:51.52 10.0 undecidable manual PG 304 0.3219 0.09 1.8
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