Earthquake with magnitude of ML 1.8 on date 30-08-2005 and time 16:20:07 (UTC) in region 12 km SW Catania (CT)

A magnitude ML 1.8 earthquake occured in region: 12 km SW Catania (CT), on

  • 30-08-2005 16:20:07 (UTC)
  • 30-08-2005 18:20:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.4090, 15.0180 at 12 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
Catania CT 12 314555 314555
Motta Sant'Anastasia CT 12 12116 326671
Misterbianco CT 13 49410 376081
Lentini SR 14 24085 400166
Carlentini SR 15 17798 417964
Gravina di Catania CT 17 25838 443802
Sant'Agata li Battiati CT 18 9479 453281
Camporotondo Etneo CT 18 5023 458304
San Pietro Clarenza CT 18 7743 466047
Mascalucia CT 19 31958 498005
San Gregorio di Catania CT 19 11966 509971
Tremestieri Etneo CT 19 20589 530560
Scordia CT 20 17095 547655
Aci Castello CT 20 18723 566378
San Giovanni la Punta CT 20 23060 589438

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Catania (314555 inhabitants)
26 Km SW of Acireale (52622 inhabitants)
46 Km NW of Siracusa (122291 inhabitants)
59 Km NE of Ragusa (73313 inhabitants)
65 Km NE of Modica (54633 inhabitants)
66 Km NE of Vittoria (63339 inhabitants)
78 Km NE of Gela (75827 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
96 Km SW of Reggio di Calabria (183035 inhabitants)
99 Km SW of Messina (238439 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 2.0
ML 1.8
2005-08-30
16:20:07
37.409 15.018 13 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 532059
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-08-30 16:20:07 ± 0.33
Latitude 37.4090 ± 0.0216
Longitude 15.0180 ± 0.0192
Depth (km) 13 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 532059

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2421
Semi-minor axis of confidence ellipse (meter) 1684
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 2941.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 266
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.22573
Epicentral distance of station farthest from the epicenter (degree) 0.35613
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 532059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:17:25

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 532059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:17:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HVZN.BHZ. 2005-08-30T16:20:20.90 0.3 undecidable manual Sg 226 36.9297 0.519 35
IV.SSY.BHZ. 2005-08-30T16:20:17.99 0.6 undecidable manual Sg 170 28.3494 0.16 25
IV.PZI.SHZ. 2005-08-30T16:20:15.02 0.1 undecidable manual Pg 189 39.5271 -0.079 100
IV.HVZN.BHZ. 2005-08-30T16:20:14.56 0.1 undecidable manual Pg 226 36.9297 -0.117 99
IV.SSY.BHZ. 2005-08-30T16:20:13.02 0.1 undecidable manual Pg 170 28.3494 -0.223 99
IV.AGST.EHN. 2005-08-30T16:20:12.92 0.1 undecidable manual Pg 132 25.0527 0.217 99
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