Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 19-12-2009 and time 12:40:14 (Italy) in region 4 km W Nerola (RM)

A magnitude ML 2.0 earthquake occured in region: 4 km W Nerola (RM), on

  • 19-12-2009 11:40:14 (UTC)
  • 19-12-2009 12:40:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.1700, 12.7440 at 17 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
Nerola RM 4 1926 1926
Montelibretti RM 4 5323 7249
Fara in Sabina RI 5 13742 20991
Toffia RI 5 1058 22049
Montorio Romano RM 6 1984 24033
Moricone RM 6 2650 26683
Poggio Nativo RI 7 2622 29305
Castelnuovo di Farfa RI 7 1059 30364
Scandriglia RI 8 3108 33472
Frasso Sabino RI 9 743 34215
Mompeo RI 9 530 34745
Montopoli di Sabina RI 9 4210 38955
Monteflavio RM 10 1348 40303
Salisano RI 10 567 40870
Casaprota RI 11 744 41614
Palombara Sabina RM 12 13269 54883
Poggio Moiano RI 12 2751 57634
Poggio Mirteto RI 12 6315 63949
Monteleone Sabino RI 12 1224 65173
Fiano Romano RM 12 15360 80533
Poggio San Lorenzo RI 13 589 81122
Torrita Tiberina RM 13 1089 82211
Civitella San Paolo RM 14 2066 84277
Nazzano RM 14 1436 85713
Montenero Sabino RI 14 299 86012
Poggio Catino RI 15 1341 87353
Torricella in Sabina RI 15 1342 88695
Sant'Angelo Romano RM 15 5018 93713
Filacciano RM 15 477 94190
Percile RM 16 255 94445
Orvinio RI 17 405 94850
Licenza RM 17 1011 95861
Monterotondo RM 17 40830 136691
Capena RM 17 10592 147283
Marcellina RM 17 7280 154563
Ponzano Romano RM 17 1155 155718
Cantalupo in Sabina RI 17 1685 157403
Mentana RM 17 22921 180324
Roccantica RI 17 563 180887
Colle di Tora RI 18 372 181259
Monte San Giovanni in Sabina RI 18 714 181973
Pozzaglia Sabina RI 18 360 182333
Roccagiovine RM 18 263 182596
Forano RI 19 3179 185775
Guidonia Montecelio RM 19 88673 274448
Castel di Tora RI 19 288 274736
Rocca Sinibalda RI 19 815 275551
San Polo dei Cavalieri RM 19 2992 278543
Selci RI 20 1106 279649
Casperia RI 20 1246 280895
Sant'Oreste RM 20 3687 284582
Morlupo RM 20 8696 293278

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Guidonia Montecelio (88673 inhabitants)
23 Km N of Tivoli (56533 inhabitants)
38 Km NE of Roma (2864731 inhabitants)
44 Km S of Terni (111501 inhabitants)
54 Km N of Velletri (53303 inhabitants)
58 Km W of L'Aquila (69753 inhabitants)
59 Km NE of Pomezia (62966 inhabitants)
59 Km E of Viterbo (67173 inhabitants)
61 Km NE of Fiumicino (78395 inhabitants)
64 Km N of Aprilia (73446 inhabitants)
79 Km E of Civitavecchia (52991 inhabitants)
79 Km N of Latina (125985 inhabitants)
81 Km N of Anzio (54211 inhabitants)
88 Km S of Foligno (57155 inhabitants)
96 Km SW of Teramo (54892 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 		ML 2.0 2009-12-19
11:40:14		 42.17 12.744 17 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1000439
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-12-19 11:40:14 ± 0.12
Latitude 42.1700 ± 0.0036
Longitude 12.7440 ± 0.0085
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1000439

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 693
Semi-minor axis of confidence ellipse (meter) 341
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 806.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71766
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 7
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1000439
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:10:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NOCI.HHN. 2009-12-19T11:41:21.95 10.0 undecidable manual Pg 0 0 0
MN.PDG.HHN. 2009-12-19T11:41:13.63 10.0 undecidable manual Pg 0 0 0
IV.CIGN.HHE. 2009-12-19T11:41:07.73 10.0 undecidable manual Pg 0 0 0
IV.RSM.HHE. 2009-12-19T11:41:03.08 10.0 undecidable manual Pg 0 0 0
GE.MATE.HHZ. 2009-12-19T11:40:59.52 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2009-12-19T11:40:57.56 10.0 undecidable manual Pg 0 0 0
IV.RDP.HHE. 2009-12-19T11:40:49.61 10.0 undecidable manual Sg 0 0 0
IV.BSSO.HHN. 2009-12-19T11:40:45.56 10.0 undecidable manual Pg 0 0 0
IV.CAMP.HHE. 2009-12-19T11:40:45.20 10.0 undecidable manual Pg 0 0 0
IV.SDI.SHZ. 2009-12-19T11:40:45.38 10.0 undecidable manual Pg 0 0 0
IV.FIU.EHZ. 2009-12-19T11:40:45.22 10.0 undecidable manual Pg 0 0 0
IV.FSSB.SHZ. 2009-12-19T11:40:43.97 10.0 undecidable manual Pg 0 0 0
IV.ASQU.HHE. 2009-12-19T11:40:43.34 10.0 undecidable manual Pg 0 0 0
IV.ZCCA.HHZ. 2009-12-19T11:40:39.84 10.0 undecidable manual Pg 0 0 0
IV.MSAG.HHN. 2009-12-19T11:40:39.45 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHE. 2009-12-19T11:40:34.40 0.3 undecidable manual Sg 131 62.6928 0.177 68
IV.PTQR.SHZ. 2009-12-19T11:40:32.58 0.6 undecidable manual Sg 107 56.499 -0.003 46
IV.FAGN.HHE. 2009-12-19T11:40:31.80 10.0 undecidable manual Pg 0 0 0
IV.RDP.HHE. 2009-12-19T11:40:30.97 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHZ. 2009-12-19T11:40:28.64 0.6 undecidable manual Sg 185 39.9267 0.416 44
IV.NRCA.SHZ. 2009-12-19T11:40:28.79 0.3 undecidable manual Pg 22 79.6647 0.118 66
IV.CERT.HHE. 2009-12-19T11:40:26.08 0.6 undecidable manual Sg 141 31.3464 0.067 49
IV.GUAR.HHE. 2009-12-19T11:40:26.18 0.3 undecidable manual Pg 131 62.6928 0.109 68
IV.MNS.HHZ. 2009-12-19T11:40:24.33 0.3 undecidable manual Sg 348 24.4533 0.031 74
IV.PTQR.SHZ. 2009-12-19T11:40:24.87 0.3 undecidable manual Pg 107 56.499 -0.253 67
IV.MTCE.HHZ. 2009-12-19T11:40:22.24 0.3 undecidable manual Sg 180 16.2726 -0.169 74
IV.RMP.HHZ. 2009-12-19T11:40:22.29 0.6 undecidable manual Pg 185 39.9267 -0.32 46
IV.CERT.HHE. 2009-12-19T11:40:21.20 0.1 undecidable manual Pg 141 31.3464 -0.132 96
IV.MNS.HHZ. 2009-12-19T11:40:20.36 0.1 negative manual Pg 348 24.4533 0.018 99
IV.MTCE.HHZ. 2009-12-19T11:40:19.26 0.1 negative manual Pg 180 16.2726 0.011 100
MN.BLY.HHZ. 2009-12-19T11:40:18.18 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHE. 2009-12-19T11:40:15.31 10.0 undecidable manual Pg 0 0 0
IV.MURB.HHZ. 2009-12-19T11:40:14.64 10.0 undecidable manual Pg 0 0 0
IV.RAVA.EHN. 2009-12-19T11:40:02.31 10.0 undecidable manual Pg 0 0 0
NI.CGRP.HHN. 2009-12-19T11:39:53.93 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