Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-12-2010 and time 19:11:44 (Italy) in region 5 km N Cittaducale (RI)

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

  • 31-12-2010 18:11:44 (UTC)
  • 31-12-2010 19:11:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4320, 12.9490 at 8 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
Cittaducale RI 5 6828 6828
Cantalice RI 6 2755 9583
Rieti RI 8 47698 57281
Castel Sant'Angelo RI 8 1308 58589
Micigliano RI 9 127 58716
Poggio Bustone RI 9 2055 60771
Borgo Velino RI 10 972 61743
Antrodoco RI 11 2588 64331
Rivodutri RI 12 1253 65584
Concerviano RI 12 291 65875
Belmonte in Sabina RI 13 636 66511
Morro Reatino RI 14 373 66884
Leonessa RI 15 2435 69319
Greccio RI 15 1558 70877
Contigliano RI 15 3783 74660
Colli sul Velino RI 16 533 75193
Posta RI 16 694 75887
Labro RI 16 374 76261
Rocca Sinibalda RI 18 815 77076
Borbona RI 18 617 77693
Longone Sabino RI 18 597 78290
Petrella Salto RI 18 1197 79487
Monte San Giovanni in Sabina RI 18 714 80201
Polino TR 19 233 80434
Montenero Sabino RI 20 299 80733
Torricella in Sabina RI 20 1342 82075

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Terni (111501 inhabitants)
38 Km W of L'Aquila (69753 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
53 Km N of Tivoli (56533 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
67 Km W of Teramo (54892 inhabitants)
69 Km E of Viterbo (67173 inhabitants)
71 Km NE of Roma (2864731 inhabitants)
84 Km N of Velletri (53303 inhabitants)
88 Km SE of Perugia (166134 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
94 Km NE of Fiumicino (78395 inhabitants)
96 Km N of Aprilia (73446 inhabitants)
99 Km W of Montesilvano (53738 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 2.4
ML 2.0 		2010-12-31
18:11:44		 42.432 12.949 8 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1155909
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-31 18:11:44 ± 0.11
Latitude 42.4320 ± 0.0045
Longitude 12.9490 ± 0.0073
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1155909

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 525
Semi-minor axis of confidence ellipse (meter) 398
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 781.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 31
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) 1.14394
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1155909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:45

Md:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1155909
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HHZ. 2010-12-31T18:12:17.52 10.0 undecidable manual Sg 0 0 0
IV.FSSB.HHN. 2010-12-31T18:12:12.60 10.0 undecidable manual Pg 0 0 0
IV.SNTG.HHN. 2010-12-31T18:12:12.45 0.3 undecidable manual Sg 360 91.3419 0.712 55
IV.CING.HHZ. 2010-12-31T18:12:12.48 10.0 undecidable manual Pg 0 0 0
IV.MGAB.HHZ. 2010-12-31T18:12:11.00 0.1 undecidable manual Sg 308 86.6466 0.513 79
IV.OFFI.HHN. 2010-12-31T18:12:11.77 10.0 undecidable manual Pg 0 0 0
IV.GUAR.HHZ. 2010-12-31T18:12:10.98 10.0 undecidable manual Sg 0 0 0
IV.RDP.HHE. 2010-12-31T18:12:10.93 10.0 undecidable manual Pg 0 0 0
IV.GUMA.HHE. 2010-12-31T18:12:09.25 10.0 undecidable manual Pg 0 0 0
IV.RMP.HHE. 2010-12-31T18:12:07.92 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHN. 2010-12-31T18:12:05.61 0.1 undecidable manual Pg 341 123.0879 0.601 71
IV.SDI.SHZ. 2010-12-31T18:12:05.07 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHZ. 2010-12-31T18:12:05.42 0.3 undecidable manual Sg 9 67.9764 -0.095 68
IV.PIEI.HHN. 2010-12-31T18:12:05.65 0.1 undecidable manual Pg 345 126.9729 0.03 81
IV.LATE.HHN. 2010-12-31T18:12:05.01 10.0 undecidable manual Pg 0 0 0
IV.CESI.HHZ. 2010-12-31T18:12:04.14 0.3 undecidable manual Sg 357 63.6918 -0.218 66
IV.ATVO.HHE. 2010-12-31T18:12:03.73 0.1 undecidable manual Pg 337 114.2967 0.072 83
IV.SSFR.HHN. 2010-12-31T18:12:03.40 0.1 undecidable manual Pg 353 112.2987 0.051 83
IV.TERO.HHZ. 2010-12-31T18:12:02.63 0.3 undecidable manual Sg 68 57.5979 -0.094 69
IV.INTR.HHZ. 2010-12-31T18:12:02.79 10.0 undecidable manual Pg 0 0 0
IV.PTQR.SHZ. 2010-12-31T18:12:02.97 0.1 undecidable manual Sg 141 58.6968 -0.045 93
IV.FAGN.HHE. 2010-12-31T18:12:02.66 0.6 undecidable manual Sg 109 55.2003 0.573 41
IV.MURB.HHN. 2010-12-31T18:12:01.26 0.1 undecidable manual Pg 340 98.4237 0.039 86
IV.ATTE.HHZ. 2010-12-31T18:12:01.00 0.3 undecidable manual Pg 331 97.8243 -0.126 63
IV.VVLD.HHZ. 2010-12-31T18:12:00.56 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHZ. 2010-12-31T18:11:59.15 0.1 undecidable manual Sg 17 46.62 -0.64 81
IV.MGAB.HHZ. 2010-12-31T18:11:59.59 0.1 undecidable manual Pg 308 86.6466 0.19 85
IV.SNTG.HHN. 2010-12-31T18:11:59.91 0.1 undecidable manual Pg 360 91.3419 -0.212 84
IV.CAMP.HHN. 2010-12-31T18:11:58.51 0.1 undecidable manual Sg 73 39.3273 0.653 82
IV.GUAR.HHZ. 2010-12-31T18:11:58.97 10.0 undecidable manual Pg 0 0 0
IV.SMA1.EHZ. 2010-12-31T18:11:57.58 0.1 undecidable manual Sg 55 38.5281 -0.056 96
IV.FDMO.HHZ. 2010-12-31T18:11:56.34 0.1 undecidable manual Pg 9 67.9764 -0.19 88
IV.CESI.HHZ. 2010-12-31T18:11:55.59 0.1 undecidable manual Pg 357 63.6918 -0.272 88
IV.FAGN.HHE. 2010-12-31T18:11:54.53 0.1 undecidable manual Pg 109 55.2003 -0.019 94
IV.TERO.HHZ. 2010-12-31T18:11:54.70 0.1 undecidable manual Pg 68 57.5979 -0.218 90
IV.PTQR.SHZ. 2010-12-31T18:11:54.81 0.1 undecidable manual Pg 141 58.6968 -0.277 88
IV.FIAM.HHE. 2010-12-31T18:11:52.34 0.3 undecidable manual Sg 143 22.755 -0.312 70
IV.CAMP.HHN. 2010-12-31T18:11:52.06 0.1 undecidable manual Pg 73 39.3273 -0.05 96
IV.SMA1.EHZ. 2010-12-31T18:11:52.09 0.1 undecidable manual Pg 55 38.5281 0.111 95
IV.NRCA.HHZ. 2010-12-31T18:11:52.93 0.1 undecidable manual Pg 17 46.62 -0.293 90
IV.CESX.HHZ. 2010-12-31T18:11:51.09 0.1 undecidable manual Pg 303 36.1416 -0.519 87
IV.LNSS.HHZ. 2010-12-31T18:11:51.88 0.1 undecidable manual Sg 21 20.3685 0.001 100
IV.FIAM.HHE. 2010-12-31T18:11:49.45 0.1 undecidable manual Pg 143 22.755 0.347 93
IV.LNSS.HHZ. 2010-12-31T18:11:48.93 0.1 undecidable manual Pg 21 20.3685 0.274 95
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