Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 30-07-2014 and time 23:29:11 (UTC) in region 4 km SW Tivoli (RM)

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

  • 30-07-2014 23:29:11 (UTC)
  • 31-07-2014 01:29:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9330, 12.7660 at 12 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
Tivoli RM 4 56533 56533
Guidonia Montecelio RM 8 88673 145206
Gallicano nel Lazio RM 8 6334 151540
San Gregorio da Sassola RM 9 1619 153159
Castel Madama RM 10 7399 160558
Casape RM 10 744 161302
Marcellina RM 11 7280 168582
San Polo dei Cavalieri RM 11 2992 171574
Colonna RM 11 4287 175861
Zagarolo RM 12 17843 193704
Poli RM 12 2418 196122
Sant'Angelo Romano RM 12 5018 201140
San Cesareo RM 13 15153 216293
Monte Porzio Catone RM 14 8693 224986
Vicovaro RM 14 4019 229005
Monte Compatri RM 14 11978 240983
Fonte Nuova RM 14 32562 273545
Castel San Pietro Romano RM 14 902 274447
Palestrina RM 15 21672 296119
Ciciliano RM 15 1336 297455
Palombara Sabina RM 15 13269 310724
Rocca Priora RM 15 11962 322686
Sambuci RM 15 925 323611
Mentana RM 16 22921 346532
Frascati RM 16 22087 368619
Pisoniano RM 16 770 369389
Roccagiovine RM 17 263 369652
Mandela RM 17 917 370569
Capranica Prenestina RM 17 351 370920
Saracinesco RM 17 185 371105
Rocca di Cave RM 18 377 371482
Cerreto Laziale RM 18 1118 372600
Grottaferrata RM 18 20327 392927
Monterotondo RM 18 40830 433757
Cave RM 19 11287 445044
San Vito Romano RM 19 3273 448317
Gerano RM 19 1263 449580
Labico RM 19 6379 455959
Licenza RM 19 1011 456970
Rocca di Papa RM 20 17034 474004
Ciampino RM 20 38412 512416

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km SW of Tivoli (56533 inhabitants)
8 Km SE of Guidonia Montecelio (88673 inhabitants)
24 Km E of Roma (2864731 inhabitants)
27 Km N of Velletri (53303 inhabitants)
36 Km NE of Pomezia (62966 inhabitants)
39 Km N of Aprilia (73446 inhabitants)
47 Km E of Fiumicino (78395 inhabitants)
53 Km N of Latina (125985 inhabitants)
55 Km N of Anzio (54211 inhabitants)
70 Km SW of L'Aquila (69753 inhabitants)
71 Km S of Terni (111501 inhabitants)
77 Km SE of Viterbo (67173 inhabitants)
82 Km E of Civitavecchia (52991 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 2014-07-30
23:29:11		 41.9332 12.7663 12 2015-09-21
09:37:39		 Bollettino Sismico Italiano INGV 10614811
Reviewed
Rev100 		ML 2.0 2014-07-30
23:29:11		 41.9328 12.7698 15 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 7572581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-07-30 23:29:11 ± 0.08
Latitude 41.9332 ± 0.0036
Longitude 12.7663 ± 0.0060
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 10614811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.13130
Epicentral distance of station farthest from the epicenter (degree) 0.81389
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 0
Type of magnitude ML
Reference to an origin 10614811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-14 13:23:51

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 7572581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-07-30 23:33:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHE. 2014-07-30T23:29:31.20 0.3 undecidable manual S 283 64.7907 91 0.13 69
IV.GIUL.HHE. 2014-07-30T23:29:30.22 0.6 undecidable manual S 136 57.9975 91 0.97 34
IV.SMA1.EHE. 2014-07-30T23:29:27.80 0.6 undecidable manual P 31 90.3429 91 1.14 30
IV.LATB.EHE. 2014-07-30T23:29:27.30 0.6 undecidable manual S 162 51.3153 91 -0.18 46
IV.FIAM.HHZ. 2014-07-30T23:29:26.20 0.3 undecidable manual S 38 47.0196 92 -0.13 71
IV.GUAR.HHZ. 2014-07-30T23:29:26.40 0.3 undecidable manual S 109 47.619 92 -0.09 72
IV.RM33.EHE. 2014-07-30T23:29:24.37 0.6 undecidable manual P 30 73.7706 91 0.27 43
IV.LNSS.HHE. 2014-07-30T23:29:24.83 0.3 undecidable manual P 17 77.6667 91 0.13 66
IV.ARRO.EHZ. 2014-07-30T23:29:23.77 0.3 undecidable manual P 360 71.6727 91 0 68
IV.TOLF.HHE. 2014-07-30T23:29:22.46 0.1 undecidable manual P 283 64.7907 91 -0.26 87
IV.LAV9.HNZ. 2014-07-30T23:29:21.60 0.3 undecidable manual S 191 28.8489 93 0.12 73
IV.GIUL.HHE. 2014-07-30T23:29:21.51 0.1 undecidable manual P 136 57.9975 91 -0.16 91
IV.LATB.EHE. 2014-07-30T23:29:20.24 0.1 undecidable manual P 162 51.3153 91 -0.4 87
IV.ROM9.HNZ. 2014-07-30T23:29:20.67 3.0 undecidable manual S 23.9538 0.45 0
IV.SAMA.HHZ. 2014-07-30T23:29:19.60 0.3 undecidable manual S 220 22.2555 96 -0.11 72
IV.FIAM.HHZ. 2014-07-30T23:29:19.69 0.1 undecidable manual P 38 47.0196 92 -0.3 91
IV.RDP.HHZ. 2014-07-30T23:29:19.20 0.3 undecidable manual S 192 19.869 98 0.13 74
IV.GUAR.HHZ. 2014-07-30T23:29:19.84 0.1 undecidable manual P 109 47.619 92 -0.23 92
IV.CERT.HHZ. 2014-07-30T23:29:18.50 0.3 undecidable manual S 84 17.871 100 -0.06 76
IV.MA9.HHZ. 2014-07-30T23:29:18.90 0.3 undecidable manual S 206 20.1687 97 -0.27 70
IV.LAV9.HNZ. 2014-07-30T23:29:17.72 0.3 undecidable manual P 191 28.8489 93 0.54 67
IV.RMP.HHZ. 2014-07-30T23:29:17.60 0.3 undecidable manual S 201 14.5743 108 -0.1 74
IV.ROM9.HNZ. 2014-07-30T23:29:16.56 3.0 undecidable manual P 23.9538 0.17 0
IV.SAMA.HHZ. 2014-07-30T23:29:16.21 0.3 undecidable manual P 220 22.2555 96 0.05 75
IV.RDP.HHZ. 2014-07-30T23:29:16.03 0.3 undecidable manual P 192 19.869 98 0.24 72
IV.CERT.HHZ. 2014-07-30T23:29:15.52 0.1 undecidable manual P 84 17.871 100 0.03 100
IV.RMP.HHZ. 2014-07-30T23:29:15.16 0.1 undecidable manual P 201 14.5743 108 0.16 99
IV.MA9.HHZ. 2014-07-30T23:29:15.80 0.1 undecidable manual P 206 20.1687 97 -0.05 99
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