Earthquake with magnitude of ML 0.6 on date 12-04-2011 and time 20:55:46 (UTC) in region 3 km E Balsorano (AQ)

A magnitude ML 0.6 earthquake occured in region: 3 km E Balsorano (AQ), on

  • 12-04-2011 20:55:46 (UTC)
  • 12-04-2011 22:55:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.8080, 13.6040 at 14 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
Balsorano AQ 3 3569 3569
Villavallelonga AQ 7 919 4488
San Vincenzo Valle Roveto AQ 7 2347 6835
Pescosolido FR 8 1555 8390
Collelongo AQ 9 1233 9623
Sora FR 10 26144 35767
Campoli Appennino FR 10 1725 37492
Broccostella FR 12 2741 40233
Morino AQ 14 1448 41681
Civita d'Antino AQ 14 979 42660
Isola del Liri FR 15 11715 54375
Posta Fibreno FR 15 1139 55514
Castelliri FR 15 3454 58968
Pescasseroli AQ 15 2203 61171
Lecce nei Marsi AQ 16 1702 62873
Fontechiari FR 16 1303 64176
Vicalvi FR 17 783 64959
Ortucchio AQ 17 1860 66819
Trasacco AQ 18 6246 73065
Alvito FR 18 2713 75778
Arpino FR 18 7262 83040
Gioia dei Marsi AQ 18 1989 85029
Bisegna AQ 18 223 85252
Civitella Roveto AQ 19 3268 88520
Opi AQ 19 420 88940
Monte San Giovanni Campano FR 20 12929 101869

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km S of L'Aquila (69753 inhabitants)
69 Km E of Tivoli (56533 inhabitants)
69 Km NE of Latina (125985 inhabitants)
70 Km E of Velletri (53303 inhabitants)
76 Km E of Guidonia Montecelio (88673 inhabitants)
76 Km SW of Chieti (51815 inhabitants)
83 Km E of Aprilia (73446 inhabitants)
89 Km SW of Pescara (121014 inhabitants)
90 Km E of Anzio (54211 inhabitants)
91 Km SW of Montesilvano (53738 inhabitants)
93 Km E of Pomezia (62966 inhabitants)
93 Km E of Roma (2864731 inhabitants)
95 Km S of Teramo (54892 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 1.5
ML 0.6
2011-04-12
20:55:46
41.808 13.604 14 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1195869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-12 20:55:46 ± 0.33
Latitude 41.8080 ± 0.0090
Longitude 13.6040 ± 0.0097
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1195869

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 947
Semi-minor axis of confidence ellipse (meter) 604
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 168
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21764
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1195869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:23:02

Md:1.5

Field Value
Value 1.5
Uncertainty 0.0
Num. used stations
Type of magnitude Md
Reference to an origin 1195869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:23:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUAR.HHZ. 2011-04-12T20:55:55.91 0.1 undecidable manual Sg 266 24.1536 0.045 99
IV.POFI.HHZ. 2011-04-12T20:55:53.25 0.1 undecidable manual Sg 138 13.4754 0.068 100
IV.GUAR.HHZ. 2011-04-12T20:55:51.98 0.1 undecidable manual Pg 266 24.1536 -0.087 98
IV.VVLD.HHZ. 2011-04-12T20:55:51.81 0.1 undecidable manual Sg 13 6.993 -0.12 100
IV.VVLD.HHZ. 2011-04-12T20:55:50.00 0.1 undecidable manual Pg 13 6.993 0.205 98
IV.POFI.HHZ. 2011-04-12T20:55:50.39 0.1 undecidable manual Pg 138 13.4754 -0.126 99
IV.NRCA.HHN. 2011-04-12T20:55:25.56 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