Earthquake with magnitude of ML 0.3 on date 11-03-2011 and time 04:51:01 (UTC) in region 3 km NW Posta (RI)

A magnitude ML 0.3 earthquake occured in region: 3 km NW Posta (RI), on

  • 11-03-2011 04:51:01 (UTC)
  • 11-03-2011 05:51:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5530, 13.0830 at 6 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
Posta RI 3 694 694
Borbona RI 6 617 1311
Leonessa RI 10 2435 3746
Cittareale RI 10 482 4228
Micigliano RI 12 127 4355
Montereale AQ 14 2581 6936
Antrodoco RI 15 2588 9524
Monteleone di Spoleto PG 15 599 10123
Cagnano Amiterno AQ 16 1369 11492
Borgo Velino RI 16 972 12464
Poggio Bustone RI 17 2055 14519
Cantalice RI 17 2755 17274
Castel Sant'Angelo RI 18 1308 18582
Capitignano AQ 18 665 19247
Amatrice RI 19 2657 21904
Rivodutri RI 19 1253 23157
Cascia PG 19 3217 26374
Barete AQ 20 737 27111
Polino TR 20 233 27344

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of L'Aquila (69753 inhabitants)
36 Km E of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
84 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Roma (2864731 inhabitants)
92 Km W of Chieti (51815 inhabitants)
93 Km W of Pescara (121014 inhabitants)
100 Km N of Velletri (53303 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 0.3
2011-03-11
04:51:01
42.553 13.083 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1180749
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-03-11 04:51:01 ± 0.16
Latitude 42.5530 ± 0.0072
Longitude 13.0830 ± 0.0061
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1180749

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 719
Semi-minor axis of confidence ellipse (meter) 559
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
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) 214
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.10612
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1180749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:02:38

Md:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1180749
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:02:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHN. 2011-03-11T04:51:06.15 0.1 undecidable manual Sg 114 11.7771 -0.02 99
IV.RM29.EHE. 2011-03-11T04:51:05.76 0.1 undecidable manual Sg 85 10.2786 0.055 99
IV.RM33.EHN. 2011-03-11T04:51:04.27 0.1 undecidable manual Pg 114 11.7771 0.033 99
IV.LNSS.HHN. 2011-03-11T04:51:04.61 0.1 undecidable manual Sg 328 6.5934 -0.037 100
IV.LNSS.HHN. 2011-03-11T04:51:03.42 0.1 undecidable manual Pg 328 6.5934 0.063 99
IV.RM29.EHE. 2011-03-11T04:51:03.87 0.1 undecidable manual Pg 85 10.2786 -0.099 98
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