Earthquake with magnitude of Md 2.3 on date 23-01-2003 and time 17:21:50 (UTC) in region 1 km N Monte Cavallo (MC)

A magnitude Md 2.3 earthquake occured in region: 1 km N Monte Cavallo (MC), on

  • 23-01-2003 17:21:50 (UTC)
  • 23-01-2003 18:21:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0070, 13.0000 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
Monte Cavallo MC 1 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 8 202 1805
Serravalle di Chienti MC 8 1070 2875
Muccia MC 9 915 3790
Pievebovigliana MC 9 866 4656
Visso MC 11 1107 5763
Fiastra MC 13 559 6322
Ussita MC 13 444 6766
Sellano PG 14 1079 7845
Preci PG 15 724 8569
Acquacanina MC 15 121 8690
Camerino MC 15 6974 15664
Sefro MC 16 422 16086
Castelsantangelo sul Nera MC 18 281 16367
Bolognola MC 19 142 16509
Pioraco MC 19 1134 17643

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
51 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
93 Km S of Fano (60888 inhabitants)
98 Km NE of Viterbo (67173 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 2.3
ML-VAX 1.6
2003-01-23
17:21:50
43.007 13 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 466699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2003-01-23 17:21:50 ± 0.298
Latitude 43.0070 ± 0.0119
Longitude 13.0000 ± 0.0226
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 466699

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) 2268.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00591
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 466699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:22:25

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 466699
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
--.MNS.Z. 2003-01-23T17:22:15.13 10.0 undecidable manual SG 200 0.6549 0.95 0
--.ARV.Z. 2003-01-23T17:22:08.95 10.0 undecidable manual SG 355 0.4884 0.26 0.5
--.MNS.Z. 2003-01-23T17:22:03.93 10.0 undecidable manual PG 200 0.6549 -0.43 0.7
--.ARV.Z. 2003-01-23T17:22:01.30 10.0 undecidable manual PG 355 0.4884 -0.15 1.6
--.SNTG.Z. 2003-01-23T17:22:01.60 10.0 undecidable manual SG 350 0.2442 0.13 0.7
--.ASS.Z. 2003-01-23T17:22:01.60 10.0 undecidable manual SG 282 0.2553 -0.13 0.7
--.ASS.Z. 2003-01-23T17:21:56.83 10.0 undecidable manual PG 282 0.2553 -0.03 1.9
--.SNTG.Z. 2003-01-23T17:21:56.83 10.0 undecidable manual PG 350 0.2442 0.13 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