Earthquake (quarry blast) with magnitude of ML 1.4 on date 12-01-2021 and time 09:42:38 (UTC) in region 3 km SW Atina (FR)

A magnitude ML 1.4 (quarry blast) earthquake occured in region: 3 km SW Atina (FR), on

  • 12-01-2021 09:42:38 (UTC)
  • 12-01-2021 10:42:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5990, 13.7910 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Atina FR 3 4316 4316
Belmonte Castello FR 3 739 5055
Villa Latina FR 4 1241 6296
Terelle FR 5 422 6718
Casalattico FR 6 574 7292
Gallinaro FR 7 1269 8561
Casalvieri FR 7 2698 11259
Picinisco FR 8 1218 12477
Sant'Elia Fiumerapido FR 9 6166 18643
Settefrati FR 10 728 19371
Colle San Magno FR 10 699 20070
Villa Santa Lucia FR 10 2632 22702
Castrocielo FR 11 3965 26667
Alvito FR 11 2713 29380
Vicalvi FR 11 783 30163
Roccasecca FR 11 7365 37528
Vallerotonda FR 11 1581 39109
San Biagio Saracinisco FR 12 349 39458
Piedimonte San Germano FR 12 6535 45993
Cassino FR 12 36142 82135
San Donato Val di Comino FR 12 2107 84242
Fontechiari FR 12 1303 85545
Santopadre FR 13 1357 86902
Posta Fibreno FR 13 1139 88041
Aquino FR 14 5370 93411
Acquafondata FR 15 263 93674
Arpino FR 16 7262 100936
Colfelice FR 16 1932 102868
Cervaro FR 16 8109 110977
Viticuso FR 17 353 111330
Rocca d'Arce FR 17 959 112289
Broccostella FR 18 2741 115030
Pignataro Interamna FR 18 2595 117625
Arce FR 18 5756 123381
Campoli Appennino FR 18 1725 125106
Pontecorvo FR 19 13242 138348
San Vittore del Lazio FR 19 2636 140984
Sora FR 20 26144 167128

Municipalities with at least 50000 inhabitants

An earthquake occurred to
74 Km NW of Caserta (76326 inhabitants)
75 Km E of Latina (125985 inhabitants)
78 Km NW of Aversa (53047 inhabitants)
82 Km NW of Giugliano in Campania (122974 inhabitants)
85 Km NW of Marano di Napoli (59874 inhabitants)
85 Km E of Velletri (53303 inhabitants)
87 Km NW of Afragola (65057 inhabitants)
87 Km N of Pozzuoli (81661 inhabitants)
87 Km NW of Acerra (59573 inhabitants)
88 Km NW of Casoria (77642 inhabitants)
89 Km SW of Chieti (51815 inhabitants)
90 Km SE of L'Aquila (69753 inhabitants)
92 Km E of Tivoli (56533 inhabitants)
93 Km NW of Napoli (974074 inhabitants)
95 Km E of Aprilia (73446 inhabitants)
98 Km NW of Benevento (60091 inhabitants)
98 Km E of Anzio (54211 inhabitants)
98 Km NW of Portici (55274 inhabitants)
99 Km E of Guidonia Montecelio (88673 inhabitants)
99 Km NW of Ercolano (53709 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 1.4 2021-01-12
09:42:38
41.5988 13.791 1 2021-07-12
16:55:02
Bollettino Sismico Italiano INGV 88206111
Reviewed
Rev100
ML 1.5 2021-01-12
09:42:37
41.5715 13.7642 11 2021-01-12
10:01:51
Sala Sismica INGV-Roma 86198971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-12 09:42:38 ± 0.15
Latitude 41.5988 ± 0.0081
Longitude 13.7910 ± 0.0132
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 88206111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1060
Semi-minor axis of confidence ellipse (meter) 920
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 88206111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-24 13:58:50

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86198971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-12 10:01:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHE. 2021-01-12T09:42:47.22 0.3 undecidable manual P 12 46.7199 91 -0.4 66
IV.GIUL.HHZ. 2021-01-12T09:42:46.91 0.6 undecidable manual P 264 44.7219 91 -0.31 45
IV.MIDA.HHE. 2021-01-12T09:42:45.82 0.3 undecidable manual P 83 38.7279 91 -0.19 70
IV.VVLD.HHZ. 2021-01-12T09:42:44.57 0.1 undecidable manual P 335 33.0447 91 -0.31 92
IT.OPI.HGE. 2021-01-12T09:42:42.66 0.3 undecidable manual P 9 19.9689 91 0.41 69
IV.LIK.EHN.01 2021-01-12T09:42:42.54 0.6 undecidable manual P 240 22.1556 91 -0.16 48
IV.LRP.EHZ. 2021-01-12T09:42:41.85 0.1 undecidable manual P 288 17.7711 92 0.04 100
IV.POFI.HHZ. 2021-01-12T09:42:41.81 0.3 undecidable manual P 334 14.6742 92 0.61 65
IV.MCI.EHZ. 2021-01-12T09:42:40.85 0.1 undecidable manual P 171 12.0768 92 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCI.EHN. ML:1.8 0.0010198570500000001 0.1984 AML other m 2021-01-12T09:42:43.90
IV.MCI.EHE. ML:2.1 0.0020150000000000003 0.24 AML other m 2021-01-12T09:42:44.97
IV.LRP.EHE. ML:1.5 0.000284863 0.2752 AML other m 2021-01-12T09:42:45.07
IV.LRP.EHN. ML:1.2 0.00016299999999999998 0.4 AML other m 2021-01-12T09:42:45.39
IV.POFI.HHN. ML:1.1 0.000154 0.62 AML other m 2021-01-12T09:42:45.20
IV.POFI.HHE. ML:1.1 0.000153 0.56 AML other m 2021-01-12T09:42:45.99
IV.VVLD.HHE. ML:1.4 0.00011580000000000001 0.42 AML other m 2021-01-12T09:42:51.67
IV.VVLD.HHN. ML:1.6 0.0001575664 0.3392 AML other m 2021-01-12T09:42:53.53
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