Earthquake with magnitude of ML 1.2 on date 23-07-2009 and time 20:14:47 (Italy) in region 7 km S Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 7 km S Monte Cavallo (MC), on

  • 23-07-2009 18:14:47 (UTC)
  • 23-07-2009 20:14:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9340, 13.0020 at 13 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 7 145 145
Preci PG 7 724 869
Visso MC 7 1107 1976
Sellano PG 8 1079 3055
Ussita MC 11 444 3499
Pieve Torina MC 13 1458 4957
Castelsantangelo sul Nera MC 13 281 5238
Fiordimonte MC 14 202 5440
Cerreto di Spoleto PG 14 1075 6515
Pievebovigliana MC 16 866 7381
Serravalle di Chienti MC 16 1070 8451
Muccia MC 17 915 9366
Fiastra MC 17 559 9925
Norcia PG 17 4957 14882
Acquacanina MC 18 121 15003
Bolognola MC 20 142 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
53 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
93 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 1.3
ML 1.2
2009-07-23
18:14:47
42.934 13.002 13 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 933509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-07-23 18:14:47 ± 0.1
Latitude 42.9340 ± 0.0036
Longitude 13.0020 ± 0.0049
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 933509

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 332
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 565.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27339
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 933509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:47:27

Md:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 933509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 17:47:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHN. 2009-07-23T18:14:57.95 0.3 undecidable manual Sg 294 30.3474 -0.086 73
IV.CESI.HHN. 2009-07-23T18:14:53.21 0.3 undecidable manual Sg 315 11.1777 0.018 77
IV.ASSB.HHN. 2009-07-23T18:14:53.54 0.3 undecidable manual Pg 294 30.3474 -0.019 74
IV.FDMO.HHZ. 2009-07-23T18:14:53.56 0.1 undecidable manual Sg 31 13.3755 -0.105 100
IV.NRCA.HHZ. 2009-07-23T18:14:53.80 0.3 undecidable manual Sg 141 14.3745 -0.106 74
IV.NRCA.HHZ. 2009-07-23T18:14:51.25 0.3 undecidable manual Pg 141 14.3745 0.079 76
IV.FDMO.HHZ. 2009-07-23T18:14:51.16 0.1 undecidable manual Pg 31 13.3755 0.122 100
IV.CESI.HHN. 2009-07-23T18:14:50.92 0.3 undecidable manual Pg 315 11.1777 0.161 75
IV.ALJA.HHE. 2009-07-23T18:14:45.79 10.0 undecidable manual Pg 0 0 0
IV.ORI.HHN. 2009-07-23T18:14:44.52 10.0 undecidable manual Pg 0 0 0
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