Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 23-01-2012 and time 03:17:19 (Italy) in region 3 km NE Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Castelsantangelo sul Nera (MC), on

  • 23-01-2012 02:17:19 (UTC)
  • 23-01-2012 03:17:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9230, 13.1740 at 12 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castelsantangelo sul Nera MC 4 281 281
Ussita MC 4 444 725
Visso MC 7 1107 1832
Bolognola MC 9 142 1974
Acquacanina MC 12 121 2095
Preci PG 12 724 2819
Fiastra MC 13 559 3378
Montemonaco AP 13 604 3982
Montefortino FM 14 1178 5160
Fiordimonte MC 15 202 5362
Norcia PG 16 4957 10319
Montegallo AP 16 523 10842
Monte Cavallo MC 16 145 10987
Amandola FM 16 3629 14616
Sarnano MC 16 3264 17880
Pieve Torina MC 17 1458 19338
Pievebovigliana MC 17 866 20204
Arquata del Tronto AP 19 1178 21382

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
66 Km N of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
99 Km NW of Pescara (121014 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 1.6
ML 1.2 		2012-01-23
02:17:19		 42.923 13.174 12 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1335129
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-01-23 02:17:19 ± 0.09
Latitude 42.9230 ± 0.0045
Longitude 13.1740 ± 0.0098
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1335129

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 782
Semi-minor axis of confidence ellipse (meter) 397
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 943.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1335129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:35:18

Md:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1335129
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 02:35:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2012-01-23T02:18:05.90 10.0 undecidable manual Sg 0 0 0
IV.LNSS.HHN. 2012-01-23T02:17:32.06 0.3 undecidable manual Sg 197 37.1295 0.382 67
IV.SMA1.EHE. 2012-01-23T02:17:31.15 0.3 undecidable manual Sg 158 35.0427 0.039 72
IV.CESI.HHZ. 2012-01-23T02:17:28.25 0.3 undecidable manual Sg 293 23.6541 0.168 71
IV.GUMA.HHE. 2012-01-23T02:17:27.61 0.3 undecidable manual Sg 40 20.2686 0.42 69
IV.LNSS.HHN. 2012-01-23T02:17:26.30 0.1 undecidable manual Pg 197 37.1295 -0.144 93
IV.NRCA.HHN. 2012-01-23T02:17:25.05 0.1 undecidable manual Sg 206 11.0778 0.174 98
IV.FDMO.HHE. 2012-01-23T02:17:25.47 0.3 undecidable manual Sg 331 14.3745 -0.199 73
IV.SMA1.EHE. 2012-01-23T02:17:25.75 0.1 undecidable manual Pg 158 35.0427 -0.367 89
IV.CESI.HHZ. 2012-01-23T02:17:24.31 0.1 undecidable manual Pg 293 23.6541 -0.059 98
IV.GUMA.HHE. 2012-01-23T02:17:23.81 0.1 undecidable manual Pg 40 20.2686 -0.044 98
IV.NRCA.HHN. 2012-01-23T02:17:22.59 0.1 undecidable manual Pg 206 11.0778 0.073 100
IV.FDMO.HHE. 2012-01-23T02:17:22.83 0.1 undecidable manual Pg 331 14.3745 -0.145 98
IV.FIR.HHZ. 2012-01-23T02:16:54.97 10.0 undecidable manual Pg 0 0 0
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