Earthquake with magnitude of Md 2.2 on date 25-09-1991 and time 22:15:17 (UTC) in region 5 km SW Staiti (RC)

A magnitude Md 2.2 earthquake occured in region: 5 km SW Staiti (RC), on

  • 25-09-1991 22:15:17 (UTC)
  • 26-09-1991 00:15:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9770, 15.9890 at 10 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
Staiti RC 5 248 248
Bova RC 5 448 696
Palizzi RC 6 2480 3176
Bova Marina RC 8 4235 7411
Bruzzano Zeffirio RC 9 1111 8522
Brancaleone RC 10 3584 12106
Roccaforte del Greco RC 11 476 12582
Ferruzzano RC 11 772 13354
Condofuri RC 12 5113 18467
Samo RC 12 809 19276
San Lorenzo RC 14 2640 21916
Africo RC 15 3075 24991
Sant'Agata del Bianco RC 15 592 25583
Caraffa del Bianco RC 16 539 26122
Bagaladi RC 16 1039 27161
Casignana RC 16 759 27920
Bianco RC 19 4273 32193
Melito di Porto Salvo RC 19 11355 43548
San Luca RC 20 3881 47429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Reggio di Calabria (183035 inhabitants)
45 Km SE of Messina (238439 inhabitants)
83 Km NE of Acireale (52622 inhabitants)
95 Km NE of Catania (314555 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 1991-09-25
22:15:17
37.977 15.989 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 149899
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-09-25 22:15:17 ± 0.59
Latitude 37.9770 ± 0.0395
Longitude 15.9890 ± 0.0314
Depth (km) 10 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 149899

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) 5178.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 247
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.01117
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 149899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:19:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CZI.Z. 1991-09-25T22:15:40.70 10.0 undecidable manual PN 5 1.2432 -0.04 0.6
--.ATN.Z. 1991-09-25T22:15:35.30 10.0 undecidable manual SG 293 0.444 1 0
--.ATN.Z. 1991-09-25T22:15:27.18 10.0 undecidable manual PG 293 0.444 0.09 1.2
--.GMB.Z. 1991-09-25T22:15:26.28 10.0 undecidable manual SG 326 0.222 -0.55 0.2
--.MO9.Z. 1991-09-25T22:15:25.92 10.0 undecidable manual SG 276 0.222 -1.09 0
--.MO9.Z. 1991-09-25T22:15:23.50 10.0 positive manual PG 276 0.222 0.01 2.7
--.GMB.Z. 1991-09-25T22:15:23.13 10.0 undecidable manual PG 326 0.222 0.2 1.2
--.SOI.Z. 1991-09-25T22:15:22.90 10.0 undecidable manual SG 28 0.111 -0.15 0.5
--.SOI.Z. 1991-09-25T22:15:20.73 10.0 negative manual PG 28 0.111 -0.02 2.7
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