Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-12-2012 and time 22:33:30 (UTC) in region 2 km NE Appignano del Tronto (AP)

A magnitude ML 2.0 earthquake occured in region: 2 km NE Appignano del Tronto (AP), on

  • 17-12-2012 22:33:30 (UTC)
  • 17-12-2012 23:33:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9170, 13.6750 at 27 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
Appignano del Tronto AP 2 1785 1785
Offida AP 3 5058 6843
Castorano AP 5 2380 9223
Castignano AP 5 2796 12019
Castel di Lama AP 6 8634 20653
Colli del Tronto AP 7 3668 24321
Cossignano AP 8 978 25299
Spinetoli AP 9 7215 32514
Montedinove AP 9 488 33002
Maltignano AP 10 2401 35403
Montalto delle Marche AP 10 2122 37525
Monsampolo del Tronto AP 10 4611 42136
Rotella AP 10 906 43042
Ancarano TE 10 1857 44899
Ascoli Piceno AP 11 49407 94306
Sant'Egidio alla Vibrata TE 11 9811 104117
Folignano AP 11 9241 113358
Ripatransone AP 12 4309 117667
Acquaviva Picena AP 12 3831 121498
Carassai AP 13 1100 122598
Monteprandone AP 13 12655 135253
Torano Nuovo TE 13 1611 136864
Controguerra TE 14 2436 139300
Ortezzano FM 14 774 140074
Monte Rinaldo FM 15 379 140453
Monte Vidon Combatte FM 15 433 140886
Venarotta AP 15 2066 142952
Force AP 16 1354 144306
Nereto TE 16 5242 149548
Montelparo FM 16 778 150326
Civitella del Tronto TE 16 5116 155442
Montefiore dell'Aso AP 16 2123 157565
Corropoli TE 16 5045 162610
Colonnella TE 17 3734 166344
Petritoli FM 17 2335 168679
Roccafluvione AP 17 2010 170689
San Benedetto del Tronto AP 17 47303 217992
Palmiano AP 18 196 218188
Montottone FM 18 979 219167
Grottammare AP 18 16006 235173
Sant'Omero TE 18 5243 240416
Massignano AP 18 1638 242054
Santa Vittoria in Matenano FM 19 1330 243384
Monteleone di Fermo FM 19 395 243779
Monterubbiano FM 19 2230 246009
Montefalcone Appennino FM 19 424 246433
Cupra Marittima AP 19 5398 251831
Monsampietro Morico FM 19 659 252490
Moresco FM 19 598 253088
Monte Giberto FM 20 801 253889

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Teramo (54892 inhabitants)
59 Km NW of Montesilvano (53738 inhabitants)
67 Km NE of L'Aquila (69753 inhabitants)
67 Km NW of Pescara (121014 inhabitants)
75 Km NW of Chieti (51815 inhabitants)
79 Km S of Ancona (100861 inhabitants)
79 Km E of Foligno (57155 inhabitants)
93 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
Reviewed
Rev100 		ML 1.8 2012-12-17
22:33:30		 42.9083 13.6673 27 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2722941
Bulletin
Rev1000 		ML 2.0 2012-12-17
22:33:30		 42.9173 13.6748 27 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3518551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-12-17 22:33:30 ± 0.19
Latitude 42.9173 ± 0.0054
Longitude 13.6748 ± 0.0111
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3518551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 677
Semi-minor axis of confidence ellipse (meter) 617
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 166
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.58636
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 3518551
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:46:15

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 2722941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-12-17 22:42:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2012-12-17T22:33:45.47 0.6 undecidable manual S 221 42.1245 117 0.01 46
IV.CSP1.EHZ. 2012-12-17T22:33:45.51 0.6 undecidable manual S 297 42.7239 116 -0.09 45
IV.GUMA.HHZ. 2012-12-17T22:33:43.21 0.6 undecidable manual S 300 31.9458 125 0.1 47
IV.TERO.HHZ. 2012-12-17T22:33:43.28 0.3 undecidable manual S 190 33.1446 124 -0.1 71
IV.EL6.EHZ. 2012-12-17T22:33:42.91 0.1 undecidable manual P 315 65.0904 107 0.39 84
IV.FDMO.HHZ. 2012-12-17T22:33:40.03 0.1 undecidable manual P 286 49.5171 113 -0.21 88
IV.CSP1.EHZ. 2012-12-17T22:33:39.11 0.1 undecidable manual P 297 42.7239 116 -0.19 90
IV.SMA1.EHZ. 2012-12-17T22:33:39.35 0.3 undecidable manual P 221 42.1245 117 0.14 68
IV.NRCA.HHZ. 2012-12-17T22:33:39.92 0.1 undecidable manual P 259 46.5201 114 0.1 91
IV.OFFI.HHZ. 2012-12-17T22:33:38.96 0.6 undecidable manual S 24 2.1978 175 0.12 49
IV.TERO.HHZ. 2012-12-17T22:33:37.86 0.1 undecidable manual P 190 33.1446 124 -0.16 94
IV.GUMA.HHZ. 2012-12-17T22:33:37.76 0.1 undecidable manual P 300 31.9458 125 -0.1 93
IV.OFFI.HHZ. 2012-12-17T22:33:35.41 0.1 positive manual P 24 2.1978 175 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EL6.EHE. ML:1.8 0.00010600000000000002 1.58 AML other m 2012-12-17T22:33:50.98
IV.EL6.EHN. ML:1.9 0.00014000000000000001 1.58 AML other m 2012-12-17T22:34:52.10
IV.GUMA.HHE. ML:1.8 0.000194 0.36 AML other m 2012-12-17T22:33:43.38
IV.GUMA.HHN. ML:1.8 0.00021050000000000002 1.58 AML other m 2012-12-17T22:33:44.41
IV.OFFI.HHN. ML:2.4 0.001315 0.56 AML other m 2012-12-17T22:33:39.74
IV.OFFI.HHE. ML:2.2 0.0010355000000000002 1.02 AML other m 2012-12-17T22:33:39.31
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