Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 02-04-2011 and time 20:44:21 (UTC) in region 5 km SW Cittareale (RI)

A magnitude ML 0.6 earthquake occured in region: 5 km SW Cittareale (RI), on

  • 02-04-2011 20:44:21 (UTC)
  • 02-04-2011 22:44:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5790, 13.1400 at 8 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
Cittareale RI 5 482 482
Posta RI 7 694 1176
Borbona RI 7 617 1793
Montereale AQ 11 2581 4374
Amatrice RI 14 2657 7031
Leonessa RI 15 2435 9466
Capitignano AQ 15 665 10131
Cagnano Amiterno AQ 15 1369 11500
Accumoli RI 16 667 12167
Micigliano RI 16 127 12294
Monteleone di Spoleto PG 17 599 12893
Barete AQ 18 737 13630
Antrodoco RI 19 2588 16218
Cascia PG 19 3217 19435
Campotosto AQ 19 542 19977

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
40 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
73 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km NE of Tivoli (56533 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km W of Chieti (51815 inhabitants)
89 Km W of Pescara (121014 inhabitants)
93 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 1.4
ML 0.6 		2011-04-02
20:44:21		 42.579 13.14 8 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1190809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-02 20:44:21 ± 0.03
Latitude 42.5790 ± 0.0009
Longitude 13.1400 ± 0.0012
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1190809

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 91
Semi-minor axis of confidence ellipse (meter) 56
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 141.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.03
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.15288
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1190809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:16:16

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1190809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:16:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CMPO.HHZ. 2011-04-02T20:45:01.26 10.0 undecidable manual Pg 0 0 0
IV.STR4.BHZ. 2011-04-02T20:44:35.18 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHZ. 2011-04-02T20:44:34.91 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHN. 2011-04-02T20:44:30.35 10.0 undecidable manual Pg 0 0 0
IV.SMA1.EHZ. 2011-04-02T20:44:28.33 0.3 undecidable manual Sg 70 16.9719 -0.01 74
IV.RM33.EHZ. 2011-04-02T20:44:26.23 0.3 undecidable manual Sg 142 9.7791 0.033 74
IV.RM32.EHN. 2011-04-02T20:44:26.99 0.3 undecidable manual Sg 94 12.5763 0.016 74
IV.LNSS.HHN. 2011-04-02T20:44:25.85 0.3 undecidable manual Sg 288 8.5803 -0.014 75
IV.SMA1.EHZ. 2011-04-02T20:44:25.65 0.3 undecidable manual Pg 70 16.9719 0.026 73
IV.RM29.EHZ. 2011-04-02T20:44:25.11 0.3 undecidable manual Sg 111 5.4945 -0.012 75
IV.RM32.EHN. 2011-04-02T20:44:24.81 0.3 undecidable manual Pg 94 12.5763 -0.024 74
IV.LNSS.HHN. 2011-04-02T20:44:24.22 0.1 undecidable manual Pg 288 8.5803 0.023 99
IV.RM33.EHZ. 2011-04-02T20:44:24.35 0.1 undecidable manual Pg 142 9.7791 -0.033 99
IV.RM29.EHZ. 2011-04-02T20:44:23.77 0.1 undecidable manual Pg 111 5.4945 0.008 100
IV.PTQR.HHZ. 2011-04-02T20:44:06.69 10.0 undecidable manual Pg 0 0 0
IV.ORI.HHN. 2011-04-02T20:43:59.90 10.0 undecidable manual Pg 0 0 0
BA.PZUN.HHZ. 2011-04-02T20:43:41.58 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