Earthquake with magnitude of ML 0.2 on date 21-04-2011 and time 10:40:34 (Italy) in region 1 km E Capitignano (AQ)

A magnitude ML 0.2 earthquake occured in region: 1 km E Capitignano (AQ), on

  • 21-04-2011 08:40:34 (UTC)
  • 21-04-2011 10:40:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5240, 13.3110 at 5 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
Capitignano AQ 1 665 665
Montereale AQ 5 2581 3246
Campotosto AQ 6 542 3788
Barete AQ 8 737 4525
Pizzoli AQ 10 4326 8851
Cagnano Amiterno AQ 10 1369 10220
Amatrice RI 12 2657 12877
Crognaleto TE 14 1297 14174
Borbona RI 15 617 14791
Cittareale RI 16 482 15273
Scoppito AQ 18 3727 19000
Posta RI 18 694 19694
Fano Adriano TE 19 296 19990
Cortino TE 20 656 20646
Accumoli RI 20 667 21313
Pietracamela TE 20 271 21584

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
55 Km E of Terni (111501 inhabitants)
69 Km W of Montesilvano (53738 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
73 Km W of Chieti (51815 inhabitants)
74 Km W of Pescara (121014 inhabitants)
75 Km NE of Tivoli (56533 inhabitants)
75 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Roma (2864731 inhabitants)
99 Km SE of Perugia (166134 inhabitants)
100 Km E of Viterbo (67173 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 0.2
2011-04-21
08:40:34
42.524 13.311 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1199519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-21 08:40:34 ± 0.07
Latitude 42.5240 ± 0.0072
Longitude 13.3110 ± 0.0122
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1199519

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1332
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 309
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 248
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) 0.04
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.10792
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:0.2

Field Value
Value 0.2
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1199519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:27:58

Md:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1199519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:27:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2011-04-21T08:40:38.62 0.1 undecidable manual Sg 10 11.9769 0.023 99
IV.RM33.EHZ. 2011-04-21T08:40:37.35 0.1 undecidable manual Sg 258 7.9809 -0.004 100
IV.SMA1.EHZ. 2011-04-21T08:40:36.65 0.1 undecidable manual Pg 10 11.9769 -0.042 98
IV.RM32.EHZ. 2011-04-21T08:40:36.59 0.1 undecidable manual Sg 345 5.3946 -0.021 100
IV.RM32.EHZ. 2011-04-21T08:40:35.58 0.1 undecidable manual Pg 345 5.3946 0.034 100
IV.RM33.EHZ. 2011-04-21T08:40:35.98 0.1 undecidable manual Pg 258 7.9809 0.005 100
IV.USI.HHZ. 2011-04-21T08:40:24.12 10.0 undecidable manual Pg 0 0 0
IV.TRIF.HHN. 2011-04-21T08:40:18.46 10.0 undecidable manual Sg 0 0 0
IV.TRIF.HHN. 2011-04-21T08:40:11.86 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