Earthquake with magnitude of Md 2.4 on date 11-12-2001 and time 22:09:29 (Italy) in region 10 km SW Sperlinga (EN)

A magnitude Md 2.4 earthquake occured in region: 10 km SW Sperlinga (EN), on

  • 11-12-2001 21:09:29 (UTC)
  • 11-12-2001 22:09:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7170, 14.2600 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
Sperlinga EN 10 805 805
Gangi PA 10 6811 7616
Nicosia EN 13 13899 21515
Alimena PA 13 2032 23547
Calascibetta EN 14 4528 28075
Leonforte EN 15 13439 41514
Bompietro PA 15 1401 42915
Petralia Soprana PA 16 3360 46275
Villarosa EN 16 4937 51212
Enna EN 17 28019 79231
Blufi PA 17 1029 80260
Assoro EN 18 5191 85451
Petralia Sottana PA 18 2821 88272
Nissoria EN 18 3000 91272
Geraci Siculo PA 18 1945 93217
Castel di Lucio ME 20 1294 94511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Caltanissetta (63360 inhabitants)
72 Km N of Gela (75827 inhabitants)
75 Km NE of Agrigento (59770 inhabitants)
77 Km W of Catania (314555 inhabitants)
77 Km SE of Bagheria (55387 inhabitants)
81 Km W of Acireale (52622 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
90 Km SE of Palermo (674435 inhabitants)
97 Km NW of Ragusa (73313 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 2.4
ML-VAX 1.5
2001-12-11
21:09:29
37.717 14.26 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 432969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-12-11 21:09:29 ± 0.42
Latitude 37.7170 ± 0.0344
Longitude 14.2600 ± 0.0599
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 432969

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) 6506.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00753
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 432969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:48:51

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 432969
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. 2001-12-11T21:09:57.60 10.0 undecidable manual SG 142 0.7548 1.19 0.3
--.MPG.Z. 2001-12-11T21:09:45.55 10.0 undecidable manual PG 302 0.8325 -0.99 0.9
--.CLTB.Z. 2001-12-11T21:09:45.15 10.0 undecidable manual PG 260 0.8325 -1.33 0.6
--.MEU.Z. 2001-12-11T21:09:44.36 10.0 undecidable manual PG 142 0.7548 -0.58 1.4
--.MCT.Z. 2001-12-11T21:09:42.40 10.0 undecidable manual PG 259 0.5217 1.76 0.4
--.GIB.Z. 2001-12-11T21:09:42.56 10.0 undecidable manual SG 325 0.3219 0.53 0.7
--.CSLB.Z. 2001-12-11T21:09:39.97 10.0 undecidable manual SG 323 0.2664 0.09 0.8
--.GIB.Z. 2001-12-11T21:09:36.71 10.0 undecidable manual PG 325 0.3219 0.08 2
--.CSLB.Z. 2001-12-11T21:09:35.73 10.0 undecidable manual PG 323 0.2664 0.34 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download