Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 28-09-2011 and time 19:58:54 (UTC) in region 5 km NE Borbona (RI)

A magnitude ML 2.0 earthquake occured in region: 5 km NE Borbona (RI), on

  • 28-09-2011 19:58:54 (UTC)
  • 28-09-2011 21:58:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5480, 13.1700 at 11 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Borbona RI 5 617 617
Posta RI 7 694 1311
Montereale AQ 7 2581 3892
Cittareale RI 8 482 4374
Cagnano Amiterno AQ 11 1369 5743
Capitignano AQ 11 665 6408
Amatrice RI 13 2657 9065
Barete AQ 14 737 9802
Micigliano RI 14 127 9929
Antrodoco RI 16 2588 12517
Pizzoli AQ 16 4326 16843
Campotosto AQ 17 542 17385
Leonessa RI 17 2435 19820
Accumoli RI 18 667 20487
Borgo Velino RI 18 972 21459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
43 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
86 Km W of Pescara (121014 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
92 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 2.3
ML 2.0 		2011-09-28
19:58:54		 42.548 13.17 11 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1291779
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-09-28 19:58:54 ± 0.08
Latitude 42.5480 ± 0.0036
Longitude 13.1700 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1291779

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 471
Semi-minor axis of confidence ellipse (meter) 264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
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) 85
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.85795
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1291779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:35:04

Md:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 1291779
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:35:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ORI.HHZ. 2011-09-28T19:59:58.22 10.0 undecidable manual Pg 0 0 0
IV.STR3.BHN. 2011-09-28T19:59:53.34 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2011-09-28T19:59:38.04 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHE. 2011-09-28T19:59:35.56 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHN. 2011-09-28T19:59:33.43 10.0 undecidable manual Sg 0 0 0
IV.SSFR.HHE. 2011-09-28T19:59:32.52 10.0 undecidable manual Sg 0 0 0
IV.FRON.EHN. 2011-09-28T19:59:29.79 10.0 undecidable manual Pg 0 0 0
IV.BADI.EHN. 2011-09-28T19:59:27.28 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2011-09-28T19:59:25.98 10.0 undecidable manual Sg 0 0 0
IV.ATTE.HHE. 2011-09-28T19:59:24.60 10.0 undecidable manual Pg 0 0 0
IV.CING.HHE. 2011-09-28T19:59:23.86 10.0 undecidable manual Pg 0 0 0
IV.SSFR.HHE. 2011-09-28T19:59:20.30 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHN. 2011-09-28T19:59:19.96 10.0 undecidable manual Pg 0 0 0
IV.SNTG.HHN. 2011-09-28T19:59:18.86 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHN. 2011-09-28T19:59:17.63 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHZ. 2011-09-28T19:59:14.48 10.0 undecidable manual Pg 0 0 0
IV.PTQR.HHE. 2011-09-28T19:59:13.42 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHE. 2011-09-28T19:59:13.12 0.3 undecidable manual Sg 13 58.6968 0.353 64
IV.MGAB.HHZ. 2011-09-28T19:59:11.38 0.3 undecidable manual Pg 296 95.238 0.686 54
IV.FDMO.HHE. 2011-09-28T19:59:11.73 0.3 undecidable manual Sg 353 54.7008 0.046 69
IV.ATCC.EHE. 2011-09-28T19:59:09.18 0.6 undecidable manual Pg 329 82.8504 0.394 41
IV.CERT.HHZ. 2011-09-28T19:59:06.30 0.6 undecidable manual Pg 193 68.1762 -0.23 43
IV.OFFI.HHN. 2011-09-28T19:59:06.02 0.3 undecidable manual Pg 44 60.0954 0.735 57
IV.TERO.HHZ. 2011-09-28T19:59:06.38 0.1 undecidable manual Sg 77 36.4413 -0.434 88
IV.NRCA.HHZ. 2011-09-28T19:59:05.31 0.1 undecidable manual Sg 352 32.0457 -0.334 90
IV.GUMA.HHE. 2011-09-28T19:59:05.36 0.3 undecidable manual Pg 13 58.6968 0.288 65
IV.FIAM.HHE. 2011-09-28T19:59:05.17 0.3 undecidable manual Sg 188 31.3464 -0.274 69
IV.VCEL.EHE. 2011-09-28T19:59:05.20 0.3 undecidable manual Pg 107 57.498 0.325 65
IV.CESI.HHN. 2011-09-28T19:59:04.43 0.3 undecidable manual Pg 337 55.1004 -0.091 68
MN.AQU.HHZ. 2011-09-28T19:59:04.88 0.6 undecidable manual Sg 138 28.8489 0.093 48
IV.FDMO.HHE. 2011-09-28T19:59:04.19 0.1 undecidable manual Pg 353 54.7008 -0.259 88
IV.FAGN.HHN. 2011-09-28T19:59:03.83 0.3 undecidable manual Pg 133 46.1205 0.697 59
IV.CESX.HHZ. 2011-09-28T19:59:03.22 0.3 undecidable manual Pg 278 48.1185 -0.216 68
IV.T0104.HHE. 2011-09-28T19:59:03.79 0.1 undecidable manual Sg 146 24.9528 0.034 97
IV.CAMP.HHE. 2011-09-28T19:59:02.06 0.1 undecidable manual Sg 94 19.5693 -0.259 94
IV.TERO.HHZ. 2011-09-28T19:59:01.34 0.1 undecidable manual Pg 77 36.4413 -0.294 90
IV.SMA1.EHZ. 2011-09-28T19:59:01.44 0.1 undecidable manual Sg 56 16.3725 0.08 98
IV.FIAM.HHE. 2011-09-28T19:59:00.74 0.1 undecidable manual Pg 188 31.3464 -0.104 95
IV.LNSS.HHZ. 2011-09-28T19:59:00.12 0.3 undecidable manual Sg 300 12.1767 -0.095 74
IV.NRCA.HHZ. 2011-09-28T19:59:00.66 0.1 undecidable manual Pg 352 32.0457 -0.306 91
MN.AQU.HHZ. 2011-09-28T19:59:00.66 0.3 undecidable manual Pg 138 28.8489 0.189 70
IV.T0104.HHE. 2011-09-28T19:58:59.88 0.3 undecidable manual Pg 146 24.9528 0.013 73
IV.CAMP.HHE. 2011-09-28T19:58:58.99 0.3 undecidable manual Pg 94 19.5693 -0.05 73
IV.SMA1.EHZ. 2011-09-28T19:58:58.64 0.1 undecidable manual Pg 56 16.3725 0.155 96
IV.LNSS.HHZ. 2011-09-28T19:58:57.81 0.1 undecidable manual Pg 300 12.1767 -0.012 100
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
Waveforms Seismic signals in miniseed + resp format Download