Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 09-07-2011 and time 18:45:18 (UTC) in region 4 km NE Ascoli Piceno (AP)

A magnitude ML 2.0 earthquake occured in region: 4 km NE Ascoli Piceno (AP), on

  • 09-07-2011 18:45:18 (UTC)
  • 09-07-2011 20:45:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8770, 13.6170 at 18 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
Ascoli Piceno AP 4 49407 49407
Appignano del Tronto AP 5 1785 51192
Folignano AP 6 9241 60433
Castignano AP 7 2796 63229
Maltignano AP 8 2401 65630
Castel di Lama AP 8 8634 74264
Offida AP 9 5058 79322
Castorano AP 9 2380 81702
Rotella AP 10 906 82608
Sant'Egidio alla Vibrata TE 10 9811 92419
Venarotta AP 10 2066 94485
Montedinove AP 11 488 94973
Colli del Tronto AP 11 3668 98641
Ancarano TE 11 1857 100498
Roccafluvione AP 12 2010 102508
Civitella del Tronto TE 12 5116 107624
Montalto delle Marche AP 12 2122 109746
Spinetoli AP 13 7215 116961
Palmiano AP 13 196 117157
Cossignano AP 13 978 118135
Force AP 14 1354 119489
Torano Nuovo TE 14 1611 121100
Monsampolo del Tronto AP 14 4611 125711
Controguerra TE 17 2436 128147
Montelparo FM 17 778 128925
Monte Rinaldo FM 17 379 129304
Ortezzano FM 17 774 130078
Campli TE 18 7209 137287
Nereto TE 18 5242 142529
Montefalcone Appennino FM 18 424 142953
Acquaviva Picena AP 18 3831 146784
Carassai AP 18 1100 147884
Ripatransone AP 18 4309 152193
Sant'Omero TE 18 5243 157436
Valle Castellana TE 18 977 158413
Monteprandone AP 19 12655 171068
Corropoli TE 19 5045 176113
Santa Vittoria in Matenano FM 19 1330 177443
Comunanza AP 19 3166 180609
Monte Vidon Combatte FM 19 433 181042
Smerillo FM 20 365 181407

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Teramo (54892 inhabitants)
59 Km NW of Montesilvano (53738 inhabitants)
61 Km NE of L'Aquila (69753 inhabitants)
67 Km NW of Pescara (121014 inhabitants)
74 Km NW of Chieti (51815 inhabitants)
75 Km E of Foligno (57155 inhabitants)
83 Km S of Ancona (100861 inhabitants)
87 Km E of Terni (111501 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 2.5
ML 2.0 		2011-07-09
18:45:18		 42.877 13.617 18 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1254639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-07-09 18:45:18 ± 0.23
Latitude 42.8770 ± 0.0090
Longitude 13.6170 ± 0.0135
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1254639

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1186
Semi-minor axis of confidence ellipse (meter) 535
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 1486.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.65
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.91191
Number of stations at which the event was observed 39
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 1254639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:43:03

Md:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1254639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 00:43:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.HHN. 2011-07-09T18:45:52.52 10.0 undecidable manual Sg 0 0 0
IV.T0502.EHZ. 2011-07-09T18:45:47.75 10.0 undecidable manual Pg 0 0 0
IV.PARC.HHZ. 2011-07-09T18:45:45.63 10.0 undecidable manual Pg 0 0 0
IV.ATMC.EHZ. 2011-07-09T18:45:43.33 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHZ. 2011-07-09T18:45:42.13 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2011-07-09T18:45:41.00 10.0 undecidable manual Pg 0 0 0
IV.POFI.HHZ. 2011-07-09T18:45:41.34 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHE. 2011-07-09T18:45:40.09 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHN. 2011-07-09T18:45:40.72 10.0 undecidable manual Pg 0 0 0
IV.ATVO.HHE. 2011-07-09T18:45:40.16 10.0 undecidable manual Pg 0 0 0
IV.FSSB.HHE. 2011-07-09T18:45:39.50 10.0 undecidable manual Pg 0 0 0
IV.VVLD.HHN. 2011-07-09T18:45:39.33 10.0 undecidable manual Pg 0 0 0
IV.CING.HHE. 2011-07-09T18:45:39.42 0.1 undecidable manual Sg 328 64.9905 0.799 77
MN.AQU.HHN. 2011-07-09T18:45:39.38 10.0 undecidable manual Pg 0 0 0
IV.ATTE.HHZ. 2011-07-09T18:45:39.91 10.0 undecidable manual Pg 0 0 0
IV.MPAG.EHZ. 2011-07-09T18:45:38.52 10.0 undecidable manual Pg 0 0 0
IV.PTQR.HHE. 2011-07-09T18:45:38.41 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHE. 2011-07-09T18:45:37.78 0.6 undecidable manual Sg 284 59.5959 0.594 43
IV.VCEL.EHZ. 2011-07-09T18:45:37.38 0.1 undecidable manual Sg 161 56.499 0.991 74
IV.FRON.EHZ. 2011-07-09T18:45:36.08 0.6 undecidable manual Pg 315 101.2209 0.322 43
IV.CESX.HHN. 2011-07-09T18:45:36.85 10.0 undecidable manual Pg 0 0 0
IV.INTR.HHZ. 2011-07-09T18:45:36.44 0.6 undecidable manual Pg 166 98.8233 1.046 33
IV.LNSS.HHE. 2011-07-09T18:45:36.82 0.1 undecidable manual Sg 237 55.9995 0.583 89
IV.MURB.HHN. 2011-07-09T18:45:35.58 0.1 undecidable manual Pg 296 98.3238 0.267 87
IV.SSFR.HHN. 2011-07-09T18:45:35.09 0.3 undecidable manual Pg 313 91.7415 0.799 56
IV.ARVD.HHN. 2011-07-09T18:45:34.55 0.1 undecidable manual Pg 322 87.9453 0.833 73
IV.RM29.EHZ. 2011-07-09T18:45:34.72 0.1 undecidable manual Sg 224 48.3183 0.49 92
IV.FDMO.HHE. 2011-07-09T18:45:33.90 0.1 undecidable manual Sg 293 46.5201 0.147 99
IV.FIAM.HHN. 2011-07-09T18:45:33.17 0.6 undecidable manual Pg 211 78.9654 0.838 38
IV.ATCC.EHZ. 2011-07-09T18:45:33.07 0.1 undecidable manual Pg 294 86.247 -0.391 88
IV.NRCA.HHZ. 2011-07-09T18:45:32.66 0.3 undecidable manual Sg 263 41.1255 0.296 73
IV.AOI.HHN. 2011-07-09T18:45:31.77 0.6 undecidable manual Pg 359 74.6697 0.089 47
IV.FAGN.HHN. 2011-07-09T18:45:31.56 0.3 undecidable manual Pg 182 67.8765 0.923 56
IV.SNTG.HHZ. 2011-07-09T18:45:30.01 0.3 undecidable manual Pg 308 68.9754 -0.808 59
IV.GUMA.HHN. 2011-07-09T18:45:30.04 0.3 undecidable manual Sg 312 30.747 0.335 73
IV.TRTR.HHZ. 2011-07-09T18:45:29.04 0.3 undecidable manual Sg 107 25.3524 0.679 66
IV.CING.HHE. 2011-07-09T18:45:29.56 0.1 undecidable manual Pg 328 64.9905 -0.638 85
IV.VCEL.EHZ. 2011-07-09T18:45:28.23 0.1 undecidable manual Pg 161 56.499 -0.686 84
IV.LNSS.HHE. 2011-07-09T18:45:28.27 0.1 undecidable manual Pg 237 55.9995 -0.55 88
IV.TERO.HHZ. 2011-07-09T18:45:28.74 0.1 undecidable manual Sg 182 28.2495 -0.324 98
IV.CESI.HHE. 2011-07-09T18:45:28.83 0.1 undecidable manual Pg 284 59.5959 -0.544 89
IV.RM29.EHZ. 2011-07-09T18:45:27.24 0.1 undecidable manual Pg 224 48.3183 -0.422 93
IV.NRCA.HHZ. 2011-07-09T18:45:26.06 0.1 undecidable manual Pg 263 41.1255 -0.523 92
IV.FDMO.HHE. 2011-07-09T18:45:26.65 0.1 undecidable manual Pg 293 46.5201 -0.74 84
IV.OFFI.HHZ. 2011-07-09T18:45:25.39 0.6 undecidable manual Sg 41 8.4804 0.408 49
IV.GUMA.HHN. 2011-07-09T18:45:24.62 0.1 undecidable manual Pg 312 30.747 -0.434 96
IV.TRTR.HHZ. 2011-07-09T18:45:23.95 0.1 undecidable manual Pg 107 25.3524 -0.322 100
IV.TERO.HHZ. 2011-07-09T18:45:23.95 0.1 undecidable manual Pg 182 28.2495 -0.73 87
IV.OFFI.HHZ. 2011-07-09T18:45:21.86 0.1 undecidable manual Pg 41 8.4804 -0.466 100
IV.STR3.BHE. 2011-07-09T18:45:12.42 10.0 undecidable manual Pg 0 0 0
IV.SBPO.HHN. 2011-07-09T18:44:44.68 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
Waveforms Seismic signals in miniseed + resp format Download