Earthquake with magnitude of ML 0.3 on date 06-08-2011 and time 02:20:37 (Italy) in region 4 km SE Cittareale (RI)

A magnitude ML 0.3 earthquake occured in region: 4 km SE Cittareale (RI), on

  • 06-08-2011 00:20:37 (UTC)
  • 06-08-2011 02:20:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6000, 13.2050 at 7 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
Cittareale RI 4 482 482
Amatrice RI 8 2657 3139
Montereale AQ 9 2581 5720
Accumoli RI 11 667 6387
Borbona RI 11 617 7004
Capitignano AQ 12 665 7669
Posta RI 12 694 8363
Campotosto AQ 14 542 8905
Cagnano Amiterno AQ 16 1369 10274
Barete AQ 18 737 11011
Pizzoli AQ 20 4326 15337

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of L'Aquila (69753 inhabitants)
42 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
77 Km NE of Guidonia Montecelio (88673 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
78 Km NE of Tivoli (56533 inhabitants)
84 Km W of Chieti (51815 inhabitants)
84 Km W of Pescara (121014 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
98 Km NE of Roma (2864731 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 0.3
2011-08-06
00:20:37
42.6 13.205 7 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1269099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-06 00:20:37 ± 0.33
Latitude 42.6000 ± 0.0108
Longitude 13.2050 ± 0.0134
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1269099

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1686
Semi-minor axis of confidence ellipse (meter) 680
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 1627.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 231
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24192
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1269099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:02:58

Md:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1269099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:02:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SBPO.HHZ. 2011-08-06T00:21:22.02 10.0 undecidable manual Pg 0 0 0
IV.FIAM.HHE. 2011-08-06T00:20:51.86 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHE. 2011-08-06T00:20:46.86 0.3 undecidable manual Sg 344 26.8509 -0.133 75
IV.CAMP.HHE. 2011-08-06T00:20:43.79 0.3 undecidable manual Sg 113 18.0708 -0.288 74
IV.NRCA.HHE. 2011-08-06T00:20:42.90 0.3 undecidable manual Pg 344 26.8509 -0.023 77
IV.CAMP.HHE. 2011-08-06T00:20:41.32 0.3 undecidable manual Pg 113 18.0708 0.08 77
IV.SMA1.EHZ. 2011-08-06T00:20:41.89 0.3 undecidable manual Sg 73 11.0778 0.003 79
IV.SMA1.EHZ. 2011-08-06T00:20:40.24 0.1 undecidable manual Pg 73 11.0778 0.265 100
IV.STR3.BHE. 2011-08-06T00:20:21.15 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