Earthquake with magnitude of ML 0.4 on date 08-04-2011 and time 00:00:35 (Italy) in region 4 km N Cagnano Amiterno (AQ)

A magnitude ML 0.4 earthquake occured in region: 4 km N Cagnano Amiterno (AQ), on

  • 07-04-2011 22:00:35 (UTC)
  • 08-04-2011 00:00:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4930, 13.2230 at 9 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 4 1369 1369
Montereale AQ 4 2581 3950
Barete AQ 7 737 4687
Capitignano AQ 7 665 5352
Borbona RI 8 617 5969
Pizzoli AQ 9 4326 10295
Posta RI 11 694 10989
Scoppito AQ 14 3727 14716
Campotosto AQ 14 542 15258
Antrodoco RI 14 2588 17846
Micigliano RI 14 127 17973
Cittareale RI 15 482 18455
Amatrice RI 16 2657 21112
Borgo Velino RI 17 972 22084
Castel Sant'Angelo RI 19 1308 23392

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of L'Aquila (69753 inhabitants)
44 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
67 Km SE of Foligno (57155 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km NE of Tivoli (56533 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
79 Km W of Chieti (51815 inhabitants)
81 Km W of Pescara (121014 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
96 Km SE of Perugia (166134 inhabitants)
97 Km NE 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 0.4
2011-04-07
22:00:35
42.493 13.223 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1193199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-07 22:00:35 ± 0.08
Latitude 42.4930 ± 0.0036
Longitude 13.2230 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1193199

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 486
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 310
Circular confidence region, given by single value of horizontal uncertainty (meter) 565.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 304
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16008
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1193199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:19:27

Md:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 1193199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:19:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTGR.SHZ. 2011-04-07T22:00:52.72 10.0 undecidable manual Pg 0 0 0
IV.SMA1.EHZ. 2011-04-07T22:00:42.66 0.1 undecidable manual Sg 31 17.7711 0.059 96
IV.RM32.EHZ. 2011-04-07T22:00:40.45 0.1 undecidable manual Sg 34 10.2786 -0.003 99
IV.SMA1.EHZ. 2011-04-07T22:00:39.56 0.1 undecidable manual Pg 31 17.7711 -0.082 96
IV.RM29.EHE. 2011-04-07T22:00:39.80 0.1 undecidable manual Sg 347 7.6812 -0.032 99
IV.RM32.EHZ. 2011-04-07T22:00:38.40 0.1 undecidable manual Pg 34 10.2786 -0.009 99
IV.RM33.EHE. 2011-04-07T22:00:38.93 0.1 undecidable manual Sg 338 1.8981 -0.014 100
IV.RM29.EHE. 2011-04-07T22:00:38.10 0.1 undecidable manual Pg 347 7.6812 0.056 98
IV.RM33.EHE. 2011-04-07T22:00:37.57 0.1 undecidable manual Pg 338 1.8981 0.036 100
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