Earthquake with magnitude of Md 2.2 on date 12-08-1997 and time 13:02:29 (UTC) in region 7 km SE Bronte (CT)

A magnitude Md 2.2 earthquake occured in region: 7 km SE Bronte (CT), on

  • 12-08-1997 13:02:29 (UTC)
  • 12-08-1997 15:02:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7350, 14.8710 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bronte CT 7 19172 19172
Adrano CT 9 36122 55294
Biancavilla CT 10 24007 79301
Maletto CT 11 3920 83221
Ragalna CT 13 3924 87145
Santa Maria di Licodia CT 13 7641 94786
Maniace CT 15 3765 98551
Centuripe EN 17 5470 104021
Randazzo CT 17 10900 114921
PaternĂ² CT 18 48228 163149
Belpasso CT 18 28108 191257
CesarĂ² ME 19 2439 193696
Nicolosi CT 19 7463 201159
San Teodoro ME 20 1403 202562

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of Acireale (52622 inhabitants)
32 Km NW of Catania (314555 inhabitants)
76 Km E of Caltanissetta (63360 inhabitants)
79 Km SW of Messina (238439 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km NW of Siracusa (122291 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
92 Km NE of Vittoria (63339 inhabitants)
92 Km NE of Gela (75827 inhabitants)
98 Km N of Modica (54633 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 2.2
ML-VAX 2.2
1997-08-12
13:02:29
37.735 14.871 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 275419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-08-12 13:02:29 ± 0.324
Latitude 37.7350 ± 0.0216
Longitude 14.8710 ± 0.0285
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 275419

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) 3476.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00559
Epicentral distance of station farthest from the epicenter (degree) 0.00890
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 275419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:20:13

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 275419
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
--.MEU.Z. 1997-08-12T13:02:54.00 10.0 undecidable manual SG 183 0.6216 1.61 0.1
--.PZI.Z. 1997-08-12T13:02:53.88 10.0 undecidable manual SG 174 0.6771 -0.36 0.6
--.SOI.Z. 1997-08-12T13:02:49.24 10.0 undecidable manual PG 69 0.9879 -0.29 1.3
--.MO9.Z. 1997-08-12T13:02:44.63 10.0 undecidable manual PG 67 0.6993 0.49 1.3
--.CS9.Z. 1997-08-12T13:02:43.35 10.0 undecidable manual PG 288 0.6549 -0.06 1.7
--.MEU.Z. 1997-08-12T13:02:43.00 10.0 undecidable manual PG 183 0.6216 0.29 1.6
--.PZI.Z. 1997-08-12T13:02:42.59 10.0 undecidable manual PG 174 0.6771 -1.18 0.4
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