Earthquake with magnitude of ML 0.4 on date 23-06-2011 and time 04:49:29 (Italy) in region 2 km NE Cagnano Amiterno (AQ)

A magnitude ML 0.4 earthquake occured in region: 2 km NE Cagnano Amiterno (AQ), on

  • 23-06-2011 02:49:29 (UTC)
  • 23-06-2011 04:49:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.48, 13.24 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Cagnano Amiterno AQ 2 1369 1369
Barete AQ 5 737 2106
Montereale AQ 5 2581 4687
Pizzoli AQ 7 4326 9013
Capitignano AQ 7 665 9678
Borbona RI 9 617 10295
Scoppito AQ 12 3727 14022
Posta RI 12 694 14716
Campotosto AQ 14 542 15258
Antrodoco RI 14 2588 17846
Micigliano RI 15 127 17973
Borgo Velino RI 17 972 18945
Cittareale RI 17 482 19427
Amatrice RI 17 2657 22084
Castel Sant'Angelo RI 19 1308 23392
L'Aquila AQ 20 69753 93145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
75 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
80 Km W of Pescara (121014 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
96 Km NE of Velletri (53303 inhabitants)
98 Km SE of Perugia (166134 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.4
ML 0.4
2011-06-23
02:49:29
42.48 13.24 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1244379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-06-23 02:49:29 ± 0.1
Latitude 42.48 ± 0.00
Longitude 13.24 ± 0.01
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 1244379

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 519
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 308
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.06
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.09713
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0
Num. used stations
Type of magnitude ML
Reference to an origin 1244379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:28:56

Md:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1244379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:28:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM29.EHE. 2011-06-23T02:49:34.09 0.3 undecidable manual Sg 347 0.0845 0.009 75
IV.RM32.EHE. 2011-06-23T02:49:34.50 0.3 undecidable manual Sg 25 0.0971 0.034 74
IV.RM29.EHE. 2011-06-23T02:49:32.30 0.1 undecidable manual Pg 347 0.0845 -0.012 99
IV.RM32.EHE. 2011-06-23T02:49:32.49 0.1 undecidable manual Pg 25 0.0971 -0.044 99
IV.RM33.EHZ. 2011-06-23T02:49:32.79 0.1 undecidable manual Sg 333 0.0333 -0.032 100
IV.RM33.EHZ. 2011-06-23T02:49:31.64 0.1 undecidable manual Pg 333 0.0333 0.055 100
IV.RAVA.EHE. 2011-06-23T02:49:12.85 10.0 undecidable manual Pg 0 0 0
IV.MCIV.HHN. 2011-06-23T02:49:03.04 10.0 undecidable manual Pg 0 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0 0.00017 0.06 AML other m 2011-06-23T02:49:31.64
IV.RM33.EHE. ML:0 0.00017 0.06 AML other m 2011-06-23T02:49:31.64
IV.RM29.EHN. ML:0 0.00012 0.16 AML other m 2011-06-23T02:49:32.30
IV.RM29.EHE. Md:1.3 11.3 END duration s
IV.RM32.EHN. ML:0.4 3.5E-5 0.55 AML other m 2011-06-23T02:49:32.49
IV.RM32.EHE. Md:1.3 11.8 END duration s
IV.RAVA.EHE. Md:0 29 END duration s
IV.RM33.EHZ. Md:1.5 16 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download