Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 23-12-2017 and time 13:17:20 (Italy) in region 5 km W Ceprano (FR)

A magnitude ML 2.3 earthquake occured in region: 5 km W Ceprano (FR), on

  • 23-12-2017 12:17:20 (UTC)
  • 23-12-2017 13:17:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5350, 13.4680 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
Ceprano FR 5 8897 8897
Pofi FR 6 4204 13101
Falvaterra FR 6 554 13655
Castro dei Volsci FR 6 4781 18436
Pastena FR 8 1462 19898
Strangolagalli FR 8 2491 22389
San Giovanni Incarico FR 8 3336 25725
Arnara FR 9 2309 28034
Ripi FR 9 5270 33304
Arce FR 11 5756 39060
Fontana Liri FR 11 2953 42013
Vallecorsa FR 11 2643 44656
Rocca d'Arce FR 11 959 45615
Ceccano FR 12 23565 69180
Colfelice FR 12 1932 71112
Pico FR 12 2888 74000
Boville Ernica FR 12 8737 82737
Torrice FR 12 4816 87553
Monte San Giovanni Campano FR 12 12929 100482
Amaseno FR 13 4368 104850
Villa Santo Stefano FR 13 1720 106570
Lenola LT 14 4189 110759
Frosinone FR 15 46323 157082
Giuliano di Roma FR 16 2400 159482
Santopadre FR 16 1357 160839
Roccasecca FR 17 7365 168204
Campodimele LT 17 622 168826
Prossedi LT 17 1202 170028
Arpino FR 17 7262 177290
Castelliri FR 18 3454 180744
Veroli FR 18 20560 201304
Isola del Liri FR 18 11715 213019
Pontecorvo FR 19 13242 226261
Colle San Magno FR 19 699 226960
Castrocielo FR 19 3965 230925
Patrica FR 20 3171 234096
Fondi LT 20 39809 273905

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Latina (125985 inhabitants)
60 Km E of Velletri (53303 inhabitants)
69 Km E of Aprilia (73446 inhabitants)
71 Km E of Anzio (54211 inhabitants)
73 Km SE of Tivoli (56533 inhabitants)
80 Km SE of Guidonia Montecelio (88673 inhabitants)
82 Km E of Pomezia (62966 inhabitants)
88 Km NW of Aversa (53047 inhabitants)
89 Km NW of Caserta (76326 inhabitants)
91 Km E of Roma (2864731 inhabitants)
91 Km S of L'Aquila (69753 inhabitants)
91 Km NW of Giugliano in Campania (122974 inhabitants)
93 Km NW of Pozzuoli (81661 inhabitants)
93 Km NW of Marano di Napoli (59874 inhabitants)
98 Km NW of Afragola (65057 inhabitants)
98 Km NW of Casoria (77642 inhabitants)
100 Km NW of Acerra (59573 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 2.3 2017-12-23
12:17:20		 41.5352 13.4683 11 2018-09-04
09:10:39		 Bollettino Sismico Italiano INGV 53040861
Reviewed
Rev100 		ML 2.3 2017-12-23
12:17:20		 41.5287 13.4813 10 2017-12-23
12:24:40		 Sala Sismica INGV-Roma 52756751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-23 12:17:20 ± 0.06
Latitude 41.5352 ± 0.0036
Longitude 13.4683 ± 0.0036
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53040861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 322
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 186
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.00005
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 50
Type of magnitude ML
Reference to an origin 52756751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-23 12:24:40

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 45
Type of magnitude ML
Reference to an origin 53040861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-01-05 23:21:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MRVN.HHZ. 2017-12-23T12:18:26.10 3.0 undecidable manual Sg 3.23 0
IV.SLCN.HHZ. 2017-12-23T12:18:18.82 3.0 undecidable manual Sn -1.29 0
IV.CSNT.HHZ. 2017-12-23T12:18:02.67 3.0 positive manual Pn 1.75 0
IV.MF5.EHZ. 2017-12-23T12:17:49.95 3.0 undecidable manual P 3.59 0
IV.VCEL.EHN. 2017-12-23T12:17:49.19 1.0 undecidable manual S 18 100.122 50 -0.34 20
IV.VENT.EHZ. 2017-12-23T12:17:45.04 1.0 undecidable manual S 183 82.251 50 0.3 21
IV.T0110.HHZ. 2017-12-23T12:17:44.91 1.0 undecidable manual S 18 81.0522 50 0.47 20
IV.MTCE.HHZ. 2017-12-23T12:17:44.56 1.0 undecidable manual S 312 80.8635 50 0.19 21
IV.T1299.EHZ. 2017-12-23T12:17:43.31 3.0 positive manual Pg 1.7 0
IV.INTR.HHZ. 2017-12-23T12:17:40.17 1.0 undecidable manual S 34 63.9915 50 0.3 22
IV.CERT.HHZ. 2017-12-23T12:17:39.21 1.0 undecidable manual S 319 61.0944 50 0.12 23
IV.SRES.HHZ. 2017-12-23T12:17:38.69 0.1 undecidable manual P 315 111 50 -0.15 81
IV.RNI2.HHZ. 2017-12-23T12:17:38.48 1.0 undecidable manual S 72 59.6958 50 -0.25 22
IV.PTQR.HHZ. 2017-12-23T12:17:37.59 1.0 undecidable manual S 354 54.3012 50 0.31 22
IV.RCAV.EHZ. 2017-12-23T12:17:37.85 1.0 undecidable manual S 309 55.5 50 0.25 22
IV.VCEL.EHN. 2017-12-23T12:17:37.03 0.1 undecidable manual P 18 100.122 50 -0.14 83
IV.CERA.HHZ. 2017-12-23T12:17:35.28 1.0 undecidable manual S 81 46.2204 50 0.16 23
IV.LATB.EHZ. 2017-12-23T12:17:34.38 1.0 undecidable manual S 264 42.2244 50 0.3 22
IV.LPEL.HHE. 2017-12-23T12:17:34.30 0.1 undecidable manual P 46 81.9513 50 -0.06 87
IV.T0110.HHZ. 2017-12-23T12:17:34.26 0.1 undecidable manual P 18 81.0522 50 0.03 88
IV.VENT.EHZ. 2017-12-23T12:17:34.66 0.1 undecidable manual P 183 82.251 50 0.25 84
IV.MTCE.HHZ. 2017-12-23T12:17:33.82 0.1 undecidable manual P 312 80.8635 50 -0.37 82
IV.VVLD.HHZ. 2017-12-23T12:17:33.31 1.0 undecidable manual S 19 39.2274 50 0.04 24
IV.MIDA.HHZ. 2017-12-23T12:17:32.12 0.1 undecidable manual P 79 66.2781 50 0.17 88
IV.RNI2.HHZ. 2017-12-23T12:17:31.36 0.1 undecidable manual P 72 59.6958 50 0.42 85
IV.INTR.HHZ. 2017-12-23T12:17:31.57 0.1 undecidable manual P 34 63.9915 50 -0.03 91
IV.GUAR.HHZ. 2017-12-23T12:17:31.61 1.0 undecidable manual S 336 31.5462 50 0.4 22
IV.POFI.HHZ. 2017-12-23T12:17:30.69 1.0 undecidable manual S 45 28.5492 50 0.27 23
IV.CERT.HHZ. 2017-12-23T12:17:30.80 0.1 undecidable manual P 319 61.0944 50 -0.35 86
IV.MCI.EHZ. 2017-12-23T12:17:30.45 1.0 undecidable manual S 100 29.0487 50 -0.1 24
IV.PTQR.HHZ. 2017-12-23T12:17:30.10 0.1 positive manual P 354 54.3012 50 0 93
IV.RCAV.EHZ. 2017-12-23T12:17:30.16 0.1 undecidable manual P 309 55.5 50 -0.12 91
IV.CERA.HHZ. 2017-12-23T12:17:29.00 0.1 undecidable manual P 81 46.2204 50 0.15 92
IV.MODR.HHZ. 2017-12-23T12:17:29.74 0.1 positive manual P 142 55.0005 50 -0.48 84
IV.LATB.EHZ. 2017-12-23T12:17:28.18 0.1 positive manual P 264 42.2244 50 -0.07 94
IV.VVLD.HHZ. 2017-12-23T12:17:27.65 0.1 undecidable manual P 19 39.2274 50 -0.14 93
IV.GIUL.HHZ. 2017-12-23T12:17:27.85 1.0 undecidable manual S 278 17.9709 121 0.29 23
IV.POFI.HHZ. 2017-12-23T12:17:26.10 0.1 negative manual P 45 28.5492 50 -0.04 97
IV.LRP.EHZ. 2017-12-23T12:17:26.78 0.6 undecidable manual S 38 15.7731 124 -0.17 48
IV.MCI.EHZ. 2017-12-23T12:17:26.13 0.1 undecidable manual P 100 29.0487 50 -0.08 96
IV.GUAR.HHZ. 2017-12-23T12:17:26.71 0.1 positive manual P 336 31.5462 50 0.12 95
IV.GIUL.HHZ. 2017-12-23T12:17:24.75 0.1 positive manual P 278 17.9709 121 0.26 94
IV.LRP.EHZ. 2017-12-23T12:17:24.19 0.1 negative manual P 38 15.7731 124 0.06 99
IV.LIK.EHE.01 2017-12-23T12:17:23.00 0.1 undecidable manual P 118 8.4804 142 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MODR.HHE. ML:0.0 0.00032091585 0.1408 AML other m 2017-12-23T12:17:37.96
IV.MODR.HHN. ML:0.0 0.0004667481 0.16 AML other m 2017-12-23T12:17:38.10
IV.LRP.EHN. ML:2.5 0.003000244 0.1856 AML other m 2017-12-23T12:17:27.75
IV.LRP.EHE. ML:2.8 0.0052598625 0.3776 AML other m 2017-12-23T12:17:27.10
IV.GIUL.HHN. ML:2.4 0.0018999535 0.1792 AML other m 2017-12-23T12:17:28.54
IV.GIUL.HHE. ML:2.2 0.0012423445 0.1984 AML other m 2017-12-23T12:17:29.62
IV.POFI.HNN. ML:2.1 0.0006821558 0.2816 AML other m 2017-12-23T12:17:32.77
IV.POFI.HNE. ML:2.1 0.0006402291499999999 0.1792 AML other m 2017-12-23T12:17:32.79
IV.POFI.HHE. ML:2.1 0.0006681044499999999 0.1792 AML other m 2017-12-23T12:17:32.79
IV.POFI.HHN. ML:2.1 0.0006784645 0.384 AML other m 2017-12-23T12:17:32.71
IV.MCI.EHN. ML:2.8 0.002868316 0.1984 AML other m 2017-12-23T12:17:33.24
IV.MCI.EHE. ML:3.0 0.0047224985 0.2176 AML other m 2017-12-23T12:17:33.52
IV.GUAR.HHE. ML:2.5 0.0013124025000000002 0.2176 AML other m 2017-12-23T12:17:33.70
IV.GUAR.HHN. ML:2.4 0.0011411106 0.256 AML other m 2017-12-23T12:17:33.30
IV.VVLD.HHN. ML:2.4 0.0008624849000000001 0.3584 AML other m 2017-12-23T12:17:34.14
IV.VVLD.HHE. ML:2.4 0.0008968863 0.2816 AML other m 2017-12-23T12:17:34.07
IV.LATB.EHE. ML:1.8 0.0001835331 0.4032 AML other m 2017-12-23T12:17:34.62
IV.LATB.EHN. ML:1.5 0.000097689995 0.2816 AML other m 2017-12-23T12:17:36.22
IV.CERA.HHE. ML:2.4 0.0007737816 0.3776 AML other m 2017-12-23T12:17:38.89
IV.CERA.HNE. ML:2.4 0.0007668983999999999 0.4608 AML other m 2017-12-23T12:17:38.89
IV.CERA.HHN. ML:2.3 0.0005704046 0.4416 AML other m 2017-12-23T12:17:41.88
IV.CERA.HNN. ML:2.3 0.000548361 0.4416 AML other m 2017-12-23T12:17:41.66
IV.PTQR.HHN. ML:2.3 0.0005235726 0.1984 AML other m 2017-12-23T12:17:39.29
IV.PTQR.HHE. ML:2.4 0.0006310011 0.16 AML other m 2017-12-23T12:17:38.67
IV.RCAV.EHE. ML:2.3 0.00050784635 0.2432 AML other m 2017-12-23T12:17:42.76
IV.RCAV.EHN. ML:2.4 0.0006038219499999999 0.1792 AML other m 2017-12-23T12:17:40.20
IV.CERT.HHE. ML:2.3 0.00035898384999999997 0.16 AML other m 2017-12-23T12:17:41.01
IV.CERT.HHN. ML:2.2 0.0003300221 0.32 AML other m 2017-12-23T12:17:41.00
IV.RNI2.HHE. ML:2.3 0.00042653090000000003 0.3584 AML other m 2017-12-23T12:17:42.78
IV.RNI2.HNN. ML:2.1 0.00024551989999999996 0.3776 AML other m 2017-12-23T12:17:46.49
IV.RNI2.HHN. ML:2.1 0.0002407642 0.3776 AML other m 2017-12-23T12:17:46.49
IV.RNI2.HNE. ML:2.3 0.0004082911 0.3584 AML other m 2017-12-23T12:17:42.78
IV.INTR.HHE. ML:2.2 0.00031060135 0.4992 AML other m 2017-12-23T12:17:43.79
IV.INTR.HHN. ML:2.4 0.00046970815 0.7808 AML other m 2017-12-23T12:17:45.47
IV.INTR.HNN. ML:0.0 0.00000034098265 0.7936 AML other m 2017-12-23T12:17:45.48
IV.INTR.HNE. ML:0.0 0.00000035839219999999996 0.5056 AML other m 2017-12-23T12:17:43.80
IV.MIDA.HNE. ML:2.2 0.00025831504999999997 0.6208 AML other m 2017-12-23T12:17:48.01
IV.MIDA.HHE. ML:2.2 0.00028496355 0.6016 AML other m 2017-12-23T12:17:48.01
IV.MIDA.HHN. ML:2.2 0.00031875860000000003 0.4032 AML other m 2017-12-23T12:17:47.23
IV.MTCE.HHE. ML:2.0 0.000134527355 0.3392 AML other m 2017-12-23T12:17:47.32
IV.MTCE.HHN. ML:2.0 0.000130251145 0.3968 AML other m 2017-12-23T12:17:48.28
IV.T0110.HHE. ML:2.5 0.00039723229999999996 0.2368 AML other m 2017-12-23T12:17:46.76
IV.T0110.HHN. ML:2.4 0.0003134592 0.2816 AML other m 2017-12-23T12:17:52.96
IV.VENT.EHN. ML:2.6 0.00049798625 0.4416 AML other m 2017-12-23T12:17:47.35
IV.VENT.EHE. ML:2.7 0.0005980603 0.3968 AML other m 2017-12-23T12:17:47.08
IV.SRES.HHE. ML:1.7 0.000040752234999999995 0.4544 AML other m 2017-12-23T12:18:03.68
IV.SRES.HHN. ML:1.8 0.00005993883 0.6592 AML other m 2017-12-23T12:18:06.55
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