Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 12-03-2018 and time 22:46:02 (Italy) in region 3 km W Pomezia (RM)

A magnitude ML 1.9 earthquake occured in region: 3 km W Pomezia (RM), on

  • 12-03-2018 21:46:02 (UTC)
  • 12-03-2018 22:46:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.6700, 12.4680 at 11 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
Pomezia RM 3 62966 62966
Ardea RM 9 49183 112149
Albano Laziale RM 17 41715 153864
Aprilia LT 17 73446 227310
Castel Gandolfo RM 18 8997 236307
Ariccia RM 18 19407 255714
Ciampino RM 19 38412 294126
Genzano di Roma RM 19 23970 318096
Marino RM 19 43026 361122
Lanuvio RM 20 13632 374754

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of Pomezia (62966 inhabitants)
17 Km NW of Aprilia (73446 inhabitants)
22 Km SE of Fiumicino (78395 inhabitants)
25 Km S of Roma (2864731 inhabitants)
26 Km W of Velletri (53303 inhabitants)
28 Km NW of Anzio (54211 inhabitants)
43 Km SW of Guidonia Montecelio (88673 inhabitants)
43 Km NW of Latina (125985 inhabitants)
43 Km SW of Tivoli (56533 inhabitants)
73 Km SE of Civitavecchia (52991 inhabitants)
88 Km SE of Viterbo (67173 inhabitants)
100 Km S 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
Bulletin
Rev1000 		ML 1.9 2018-03-12
21:46:02		 41.6702 12.4683 11 2019-04-24
14:49:20		 Bollettino Sismico Italiano INGV 54558021
Reviewed
Rev200 		ML 2.0 2018-03-12
21:46:02		 41.669 12.466 11 2018-03-12
22:12:45		 Sala Sismica INGV-Roma 54557051
Reviewed
Rev100 		ML 2.0 2018-03-12
21:46:02		 41.6688 12.4663 11 2018-03-12
21:55:55		 Sala Sismica INGV-Roma 54556961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-03-12 21:46:02 ± 0.12
Latitude 41.6702 ± 0.0054
Longitude 12.4683 ± 0.0060
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 54558021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 648
Semi-minor axis of confidence ellipse (meter) 361
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 204
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 40
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) 1.15473
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 54556961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-03-12 21:55:55

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 54558021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-03-14 16:33:50

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 54557051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-03-12 22:12:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2018-03-12T21:46:50.58 3.0 undecidable manual Sn -0.96 0
IV.SMA1.EHN. 2018-03-12T21:46:39.05 0.6 undecidable manual S 33 128.1717 50 -0.32 38
IV.MMUR.HNZ. 2018-03-12T21:46:33.69 3.0 negative manual Pn 1.4 0
IV.VVLD.HHZ. 2018-03-12T21:46:31.74 0.6 undecidable manual S 77 98.0241 50 0.41 40
IV.LRP.EHN. 2018-03-12T21:46:30.19 0.6 undecidable manual S 91 92.7405 50 0.29 41
IV.PTQR.HHZ. 2018-03-12T21:46:28.59 0.6 undecidable manual S 63 86.3469 50 0.39 41
IV.T1221.EHZ. 2018-03-12T21:46:25.84 3.0 positive manual P 1.66 0
IV.SMA1.EHN. 2018-03-12T21:46:24.21 0.1 undecidable manual P 33 128.1717 50 0.36 76
IV.GIUL.HHZ. 2018-03-12T21:46:23.07 0.6 undecidable manual S 101 66.378 50 0.2 44
IV.LNSS.HHZ. 2018-03-12T21:46:21.61 0.1 undecidable manual P 24 113.6973 50 0 84
IV.RM33.HNE. 2018-03-12T21:46:21.58 0.3 undecidable manual P 33 111.4995 50 0.3 59
IV.TOLF.HHZ. 2018-03-12T21:46:20.26 0.3 undecidable manual S 319 58.3971 50 -0.47 64
IV.ARRO.EHZ. 2018-03-12T21:46:20.38 0.1 undecidable manual P 14 103.7184 50 0.3 81
IV.CESX.HHE. 2018-03-12T21:46:20.61 0.3 undecidable manual P 5 104.5176 50 0.41 59
IV.POFI.HNE. 2018-03-12T21:46:19.94 0.1 undecidable manual P 87 103.119 50 -0.05 85
IV.CERT.HHZ. 2018-03-12T21:46:18.98 0.3 undecidable manual S 54 52.503 50 -0.2 68
IV.LRP.EHN. 2018-03-12T21:46:18.08 0.1 undecidable manual P 91 92.7405 50 -0.3 82
IV.VVLD.HHZ. 2018-03-12T21:46:18.98 0.3 undecidable manual P 77 98.0241 50 -0.23 62
IV.LATB.EHZ. 2018-03-12T21:46:17.13 0.3 undecidable manual S 115 45.4212 50 -0.14 70
IV.PTQR.HHZ. 2018-03-12T21:46:17.84 0.1 undecidable manual P 63 86.3469 50 0.44 81
IV.MTCE.HHZ. 2018-03-12T21:46:17.06 0.3 undecidable manual S 30 45.2214 50 -0.16 70
IV.FIAM.HNN. 2018-03-12T21:46:17.56 0.3 undecidable manual P 39 85.248 50 0.34 62
IV.RCAV.EHZ. 2018-03-12T21:46:16.74 0.6 undecidable manual S 63 44.1225 50 -0.18 46
IV.GIUL.HHZ. 2018-03-12T21:46:14.11 0.1 undecidable manual P 101 66.378 50 -0.21 88
IV.TOLF.HHZ. 2018-03-12T21:46:13.20 0.1 undecidable manual P 319 58.3971 50 0.12 91
IV.RMP.HHZ. 2018-03-12T21:46:12.23 0.6 undecidable manual S 51 24.8529 50 0.43 45
IV.VIVA.HHN. 2018-03-12T21:46:11.97 0.3 undecidable manual S 70 26.5512 50 -0.26 70
IV.CERT.HHZ. 2018-03-12T21:46:11.84 0.1 positive manual P 54 52.503 50 -0.34 88
IV.RDP.HHZ. 2018-03-12T21:46:11.08 0.3 undecidable manual S 63 22.3554 50 -0.05 74
IV.MTCE.HHZ. 2018-03-12T21:46:10.70 0.1 undecidable manual P 30 45.2214 50 -0.35 89
IV.LAV9.HNZ. 2018-03-12T21:46:10.35 0.3 undecidable manual S 87 19.0698 50 0.1 74
IV.RCAV.EHZ. 2018-03-12T21:46:10.83 0.1 undecidable manual P 63 44.1225 50 -0.06 95
IV.LATB.EHZ. 2018-03-12T21:46:10.86 0.1 undecidable manual P 115 45.4212 50 -0.23 91
IV.ROM9.HNZ. 2018-03-12T21:46:09.51 1.0 undecidable manual S 12 17.9709 121 -0.42 23
IV.MA9.HHN. 2018-03-12T21:46:09.99 0.3 undecidable manual S 55 19.2696 50 -0.31 71
IV.SAMA.HHZ. 2018-03-12T21:46:09.20 0.3 undecidable manual S 40 15.9729 124 -0.13 74
IV.VIVA.HHN. 2018-03-12T21:46:08.11 0.1 undecidable manual P 70 26.5512 50 -0.07 98
IV.RMP.HHZ. 2018-03-12T21:46:08.30 0.3 undecidable manual P 51 24.8529 50 0.37 69
IV.RDP.HHZ. 2018-03-12T21:46:07.59 0.3 undecidable manual P 63 22.3554 50 0.05 74
IV.LAV9.HNZ. 2018-03-12T21:46:07.29 0.1 undecidable manual P 87 19.0698 50 0.25 95
IV.MA9.HHN. 2018-03-12T21:46:06.97 0.6 undecidable manual P 55 19.2696 50 -0.09 49
IV.SAMA.HHZ. 2018-03-12T21:46:06.46 0.1 undecidable manual P 40 15.9729 124 -0.05 100
IV.ROM9.HNZ. 2018-03-12T21:46:06.96 0.1 undecidable manual P 12 17.9709 121 0.11 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIUL.HHN. ML:1.8 0.00012165 1.58 AML other m 2018-03-12T21:46:28.04
IV.RMP.HHN. ML:2.2 0.0009925000000000001 0.2 AML other m 2018-03-12T21:46:13.17
IV.SAMA.HHE. ML:2.1 0.0011235 0.64 AML other m 2018-03-12T21:46:13.54
IV.RMP.HHE. ML:2.0 0.0005825 0.54 AML other m 2018-03-12T21:46:15.27
IV.RDP.HHE. ML:2.0 0.0006080000000000001 0.46 AML other m 2018-03-12T21:46:17.62
IV.ROM9.HNN. ML:1.9 0.00183 0.54 AML other m 2018-03-12T21:46:19.51
IV.RCAV.EHE. ML:1.6 0.0001305 1.1 AML other m 2018-03-12T21:46:20.32
IV.ROM9.HNE. ML:2.2 0.0022 0.58 AML other m 2018-03-12T21:46:20.07
IV.CERT.HHN. ML:1.6 0.000093275125 0.2816 AML other m 2018-03-12T21:46:20.64
IV.RDP.HHN. ML:2.1 0.000897 1.46 AML other m 2018-03-12T21:46:20.78
IV.RCAV.EHN. ML:1.7 0.00014150000000000002 0.94 AML other m 2018-03-12T21:46:23.07
IV.CERT.HHE. ML:1.7 0.00012140000000000001 0.42 AML other m 2018-03-12T21:46:24.79
IV.GIUL.HHE. ML:2.0 0.000199 1.48 AML other m 2018-03-12T21:46:25.77
IV.MTCE.HHE. ML:1.7 0.000142593865 0.2816 AML other m 2018-03-12T21:46:18.41
IV.MTCE.HHN. ML:1.5 0.00009239293999999999 0.2688 AML other m 2018-03-12T21:46:18.32
IV.TOLF.HHN. ML:1.6 0.000096572095 0.2432 AML other m 2018-03-12T21:46:23.71
IV.TOLF.HHE. ML:1.7 0.00011079248 0.2304 AML other m 2018-03-12T21:46:23.18
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