Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-02-2009 and time 00:58:23 (Italy) in region 4 km W Licenza (RM)

A magnitude ML 1.9 earthquake occured in region: 4 km W Licenza (RM), on

  • 31-01-2009 23:58:23 (UTC)
  • 01-02-2009 00:58:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0900, 12.8650 at 3 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
Licenza RM 4 1011 1011
Monteflavio RM 4 1348 2359
Percile RM 4 255 2614
Roccagiovine RM 5 263 2877
Montorio Romano RM 7 1984 4861
Orvinio RI 8 405 5266
Moricone RM 8 2650 7916
Mandela RM 8 917 8833
Palombara Sabina RM 9 13269 22102
Scandriglia RI 9 3108 25210
Vicovaro RM 9 4019 29229
Marcellina RM 9 7280 36509
San Polo dei Cavalieri RM 9 2992 39501
Cineto Romano RM 9 601 40102
Nerola RM 10 1926 42028
Vallinfreda RM 11 283 42311
Pozzaglia Sabina RI 11 360 42671
Montelibretti RM 12 5323 47994
Riofreddo RM 12 781 48775
Vivaro Romano RM 12 182 48957
Saracinesco RM 12 185 49142
Poggio Moiano RI 13 2751 51893
Castel Madama RM 13 7399 59292
Roviano RM 13 1351 60643
Sambuci RM 13 925 61568
Turania RI 13 241 61809
Anticoli Corrado RM 14 915 62724
Arsoli RM 14 1586 64310
Sant'Angelo Romano RM 14 5018 69328
Tivoli RM 15 56533 125861
Guidonia Montecelio RM 15 88673 214534
Oricola AQ 15 1244 215778
Poggio Nativo RI 15 2622 218400
Colle di Tora RI 15 372 218772
Ciciliano RM 16 1336 220108
Paganico Sabino RI 16 172 220280
Monteleone Sabino RI 16 1224 221504
Collalto Sabino RI 16 442 221946
Ascrea RI 16 234 222180
Castel di Tora RI 16 288 222468
Marano Equo RM 16 779 223247
Frasso Sabino RI 16 743 223990
Toffia RI 17 1058 225048
Collegiove RI 17 213 225261
Fara in Sabina RI 17 13742 239003
Carsoli AQ 18 5396 244399
Rocca di Botte AQ 18 856 245255
Poggio San Lorenzo RI 18 589 245844
Agosta RM 18 1765 247609
Nespolo RI 19 246 247855
Casaprota RI 19 744 248599
Cerreto Laziale RM 19 1118 249717
Castelnuovo di Farfa RI 19 1059 250776
San Gregorio da Sassola RM 19 1619 252395
Torricella in Sabina RI 19 1342 253737
Mentana RM 20 22921 276658
Mompeo RI 20 530 277188
Pereto AQ 20 682 277870
Rocca Canterano RM 20 196 278066

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Tivoli (56533 inhabitants)
15 Km NE of Guidonia Montecelio (88673 inhabitants)
38 Km NE of Roma (2864731 inhabitants)
45 Km N of Velletri (53303 inhabitants)
53 Km SW of L'Aquila (69753 inhabitants)
55 Km SE of Terni (111501 inhabitants)
55 Km NE of Pomezia (62966 inhabitants)
58 Km NE of Aprilia (73446 inhabitants)
63 Km NE of Fiumicino (78395 inhabitants)
69 Km N of Latina (125985 inhabitants)
72 Km SE of Viterbo (67173 inhabitants)
74 Km N of Anzio (54211 inhabitants)
88 Km E of Civitavecchia (52991 inhabitants)
94 Km SW of Teramo (54892 inhabitants)
97 Km S of Foligno (57155 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 1.9 		2009-01-31
23:58:23		 42.09 12.865 3 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 741769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-01-31 23:58:23 ± 0.09
Latitude 42.0900 ± 0.0045
Longitude 12.8650 ± 0.0073
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 741769

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 521
Semi-minor axis of confidence ellipse (meter) 506
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
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) 101
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 17
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) 0.98476
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 741769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:01:43

Md:2.5

Field Value
Value 2.5
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 741769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:01:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ORI.EHN. 2009-01-31T23:59:55.20 10.0 undecidable manual Sg 0 0 0
IV.CESI.HHE. 2009-01-31T23:58:55.21 0.6 undecidable manual Sg 2 101.5206 0.745 35
MN.AQU.HHE. 2009-01-31T23:58:43.50 10.0 undecidable manual Pg 0 0 0
IV.ASS.SHZ. 2009-01-31T23:58:42.41 0.3 undecidable manual Pg 351 109.3128 -0.051 63
IV.CESI.HHE. 2009-01-31T23:58:41.39 0.1 undecidable manual Pg 2 101.5206 0.134 84
IV.GUAR.HHZ. 2009-01-31T23:58:40.67 0.1 undecidable manual Sg 132 49.4172 0.29 89
IV.SDI.SHZ. 2009-01-31T23:58:38.62 0.1 undecidable manual Pg 118 88.7445 -0.672 74
IV.NRCA.SHZ. 2009-01-31T23:58:38.77 0.1 undecidable manual Pg 14 84.9483 0.073 88
IV.RDP.BHE. 2009-01-31T23:58:36.76 0.3 undecidable manual Sg 198 38.8278 0.019 72
IV.MA9.HHN. 2009-01-31T23:58:35.58 10.0 undecidable manual Pg 0 0 0
IV.MNS.HHZ. 2009-01-31T23:58:35.51 0.3 undecidable manual Sg 335 36.0417 -0.271 69
IV.FAGN.HHE. 2009-01-31T23:58:35.33 0.3 undecidable manual Pg 72 62.1933 0.132 68
IV.VVLD.HHN. 2009-01-31T23:58:35.64 0.1 undecidable manual Pg 111 67.0773 -0.318 86
IV.LAV9.SHZ. 2009-01-31T23:58:35.04 10.0 undecidable manual Pg 0 0 0
IV.LNSS.HHE. 2009-01-31T23:58:34.83 0.1 undecidable manual Pg 14 58.5969 0.179 90
IV.PTQR.SHZ. 2009-01-31T23:58:32.46 0.1 undecidable manual Pg 100 44.7219 0.264 91
IV.GUAR.HHZ. 2009-01-31T23:58:32.87 0.1 undecidable manual Pg 132 49.4172 -0.258 90
IV.RDP.BHE. 2009-01-31T23:58:31.01 0.1 undecidable manual Pg 198 38.8278 -0.014 96
IV.MNS.HHZ. 2009-01-31T23:58:30.22 0.1 positive manual Pg 335 36.0417 -0.248 92
IV.SBPO.HHN. 2009-01-31T23:58:29.82 10.0 undecidable manual Pg 0 0 0
IV.CERT.HHZ. 2009-01-31T23:58:28.04 10.0 undecidable manual Pg 0 0 0
IV.ORI.EHN. 2009-01-31T23:58:27.47 10.0 undecidable manual Pg 0 0 0
IV.MTCE.HHZ. 2009-01-31T23:58:27.81 0.1 undecidable manual Sg 234 12.5763 0.066 100
IV.MTCE.HHZ. 2009-01-31T23:58:26.00 0.1 undecidable manual Pg 234 12.5763 0.17 98
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