Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 14-01-2017 and time 08:29:55 (Italy) in region 1 km N Ariccia (RM)

A magnitude ML 2.2 earthquake occured in region: 1 km N Ariccia (RM), on

  • 14-01-2017 07:29:55 (UTC)
  • 14-01-2017 08:29:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7260, 12.6730 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
Ariccia RM 1 19407 19407
Albano Laziale RM 1 41715 61122
Genzano di Roma RM 3 23970 85092
Castel Gandolfo RM 3 8997 94089
Nemi RM 4 1943 96032
Rocca di Papa RM 5 17034 113066
Marino RM 5 43026 156092
Lanuvio RM 6 13632 169724
Grottaferrata RM 7 20327 190051
Frascati RM 9 22087 212138
Velletri RM 10 53303 265441
Ciampino RM 10 38412 303853
Monte Compatri RM 11 11978 315831
Rocca Priora RM 11 11962 327793
Monte Porzio Catone RM 11 8693 336486
Lariano RM 13 13432 349918
Colonna RM 14 4287 354205
Aprilia LT 15 73446 427651
San Cesareo RM 15 15153 442804
Pomezia RM 16 62966 505770
Ardea RM 17 49183 554953
Zagarolo RM 18 17843 572796
Labico RM 19 6379 579175
Cisterna di Latina LT 20 36868 616043

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km W of Velletri (53303 inhabitants)
15 Km N of Aprilia (73446 inhabitants)
16 Km E of Pomezia (62966 inhabitants)
24 Km SE of Roma (2864731 inhabitants)
29 Km SW of Tivoli (56533 inhabitants)
31 Km S of Guidonia Montecelio (88673 inhabitants)
31 Km N of Anzio (54211 inhabitants)
35 Km NW of Latina (125985 inhabitants)
37 Km E of Fiumicino (78395 inhabitants)
83 Km SE of Civitavecchia (52991 inhabitants)
90 Km SE of Viterbo (67173 inhabitants)
92 Km SW of L'Aquila (69753 inhabitants)
93 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 2.2 2017-01-14
07:29:55		 41.7265 12.6732 11 2018-01-10
09:44:28		 Bollettino Sismico Italiano INGV 39133611
Reviewed
Rev100 		ML 2.2 2017-01-14
07:29:56		 41.7363 12.6637 10 2017-01-14
07:44:45		 Sala Sismica INGV-Roma 39028871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-14 07:29:55 ± 0.12
Latitude 41.7265 ± 0.0054
Longitude 12.6732 ± 0.0096
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 39133611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 561
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46585
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 39133611
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-11-30 17:59:11

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 39028871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-14 07:44:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2017-01-14T07:30:12.57 0.6 undecidable manual S 111 51.7038 50 0.26 45
IV.LATB.EHZ. 2017-01-14T07:30:07.57 0.3 undecidable manual S 137 35.2425 50 -0.35 68
IV.CERT.HHZ. 2017-01-14T07:30:07.75 0.6 undecidable manual S 46 35.5422 50 -0.24 46
IV.MTCE.HHZ. 2017-01-14T07:30:07.71 1.0 undecidable manual S 10 33.3444 50 0.29 23
IV.GIUL.HHZ. 2017-01-14T07:30:05.16 1.0 undecidable manual P 111 51.7038 50 -0.25 22
IV.CERT.HHZ. 2017-01-14T07:30:02.85 0.1 undecidable manual P 46 35.5422 50 -0.06 96
IV.MTCE.HHZ. 2017-01-14T07:30:02.95 1.0 undecidable manual P 10 33.3444 50 0.37 23
IV.PE3.EHZ. 2017-01-14T07:30:02.41 3.0 positive manual Pg 2.29 0
IV.CAFI.HHZ. 2017-01-14T07:30:02.40 3.0 undecidable manual Pg 0.35 0
IV.LATB.EHZ. 2017-01-14T07:30:02.54 1.0 undecidable manual P 137 35.2425 50 -0.33 23
IV.RMP.HHZ. 2017-01-14T07:30:00.88 0.3 undecidable manual S 14 9.6792 138 -0.12 74
IV.VIVA.HHZ. 2017-01-14T07:30:00.77 0.3 undecidable manual S 72 8.4804 142 0.05 76
IV.SAMA.HHZ. 2017-01-14T07:30:00.73 0.3 undecidable manual S 312 8.9799 140 -0.11 75
IV.LAV9.HHZ. 2017-01-14T07:30:00.12 0.3 undecidable manual S 158 5.7942 152 -0.1 75
IV.RDP.HHZ. 2017-01-14T07:29:59.62 3.0 undecidable manual S -0.39 0
IV.RMP.HHZ. 2017-01-14T07:29:59.14 0.1 undecidable manual P 14 9.6792 138 0.26 96
IV.MA9.HHE. 2017-01-14T07:29:59.41 0.3 undecidable manual S 346 4.8951 155 -0.67 65
IV.SAMA.HHZ. 2017-01-14T07:29:59.04 0.1 undecidable manual P 312 8.9799 140 0.25 97
IV.LAV9.HHZ. 2017-01-14T07:29:58.72 0.1 positive manual P 158 5.7942 152 0.29 96
IV.RDP.HHZ. 2017-01-14T07:29:58.26 3.0 undecidable manual P -0.09 0
IV.VIVA.HHZ. 2017-01-14T07:29:58.98 0.1 undecidable manual P 72 8.4804 142 0.26 96
IV.MA9.HHE. 2017-01-14T07:29:58.23 0.1 undecidable manual P 346 4.8951 155 -0.12 100
IV.RM33.EHZ. 2017-01-14T07:29:56.40 3.0 undecidable manual Sn -1.53 0
IV.CESI.HHZ. 2017-01-14T07:29:52.12 3.0 undecidable manual P 0.45 0
IV.T1216.EHZ. 2017-01-14T07:29:50.68 3.0 positive manual P 0.55 0
IV.CSP1.EHZ. 2017-01-14T07:29:50.94 3.0 negative manual P 1.49 0
IV.T1218.EHZ. 2017-01-14T07:29:49.78 3.0 negative manual P 0.82 0
IV.T1212.EHZ. 2017-01-14T07:29:49.38 3.0 undecidable manual P -0.26 0
IV.T1220.EHZ. 2017-01-14T07:29:48.24 3.0 undecidable manual Pn -2.33 0
IV.T1299.EHZ. 2017-01-14T07:29:48.72 3.0 undecidable manual P 1.37 0
IV.T1219.EHZ. 2017-01-14T07:29:48.53 3.0 negative manual Pn -2.46 0
IV.NRCA.HHZ. 2017-01-14T07:29:45.80 3.0 undecidable manual Pn -3.24 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LAV9.HNE. ML:2.2 0.002594338 0.2176 AML other m 2017-01-14T07:30:02.87
IV.RDP.HHN. ML:2.2 0.0026220350000000004 0.32 AML other m 2017-01-14T07:30:02.02
IV.RDP.HHE. ML:2.1 0.0018434665 0.1984 AML other m 2017-01-14T07:29:59.62
IV.LAV9.HNN. ML:2.2 0.0021555585 1.5584 AML other m 2017-01-14T07:30:03.04
IV.LAV9.HHN. ML:2.2 0.0022995935 1.5584 AML other m 2017-01-14T07:30:03.03
IV.VIVA.HHE. ML:2.4 0.0030627529999999997 0.4416 AML other m 2017-01-14T07:30:01.31
IV.VIVA.HHN. ML:2.3 0.0028166485 0.16 AML other m 2017-01-14T07:30:02.75
IV.RMP.HHN. ML:1.7 0.00065457975 0.3392 AML other m 2017-01-14T07:30:05.53
IV.RMP.HHE. ML:1.6 0.0005936874 0.256 AML other m 2017-01-14T07:30:02.78
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