Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-02-2018 and time 18:03:30 (Italy) in region 3 km NW Castrocaro Terme e Terra del Sole (FC)

A magnitude ML 1.4 earthquake occured in region: 3 km NW Castrocaro Terme e Terra del Sole (FC), on

  • 09-02-2018 17:03:30 (UTC)
  • 09-02-2018 18:03:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1920, 11.9150 at 9 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
Castrocaro Terme e Terra del Sole FC 3 6426 6426
Dovadola FC 8 1653 8079
Modigliana FC 10 4560 12639
Forlì FC 11 117913 130552
Faenza RA 11 58541 189093
Predappio FC 11 6346 195439
Brisighella RA 12 7639 203078
Meldola FC 14 9970 213048
Rocca San Casciano FC 16 1910 214958
Castel Bolognese RA 17 9554 224512
Forlimpopoli FC 17 13290 237802
Riolo Terme RA 18 5720 243522
Bertinoro FC 18 11059 254581
Tredozio FC 18 1212 255793
Solarolo RA 20 4488 260281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Faenza (58541 inhabitants)
11 Km W of Forlì (117913 inhabitants)
24 Km SE of Imola (69797 inhabitants)
27 Km W of Cesena (96758 inhabitants)
34 Km SW of Ravenna (159116 inhabitants)
54 Km W of Rimini (147750 inhabitants)
57 Km SE of Bologna (386663 inhabitants)
71 Km NE of Firenze (382808 inhabitants)
74 Km E of Prato (191150 inhabitants)
75 Km SE of Ferrara (133155 inhabitants)
76 Km NE of Scandicci (50609 inhabitants)
81 Km N of Arezzo (99543 inhabitants)
85 Km E of Pistoia (90315 inhabitants)
86 Km W of Pesaro (94582 inhabitants)
93 Km SE of Modena (184973 inhabitants)
97 Km W of Fano (60888 inhabitants)
98 Km S of Rovigo (51867 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 2018-02-09
17:03:30		 44.1925 11.9147 9 2019-04-24
14:49:32		 Bollettino Sismico Italiano INGV 56750941
Reviewed
Rev100 		ML 1.5 2018-02-09
17:03:29		 44.2898 11.8073 22 2018-02-09
17:15:24		 Sala Sismica INGV-Roma 53791781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-09 17:03:30 ± 0.27
Latitude 44.1925 ± 0.0153
Longitude 11.9147 ± 0.0213
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 56750941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1598
Semi-minor axis of confidence ellipse (meter) 1531
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 1600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.55
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48833
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 53791781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-09 17:15:24

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 56750941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-28 13:34:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DGI.HHZ. 2018-02-09T17:05:27.65 3.0 undecidable manual Sn 0 0
MN.BNI.HHZ. 2018-02-09T17:05:24.48 3.0 undecidable manual Sn 4.62 0
IV.ILLI.HHZ. 2018-02-09T17:05:02.91 3.0 negative manual Pn 2.47 0
IV.RNI2.HHZ. 2018-02-09T17:04:52.13 3.0 undecidable manual Sn -1.03 0
IV.SARZ.HHZ. 2018-02-09T17:04:47.88 3.0 undecidable manual Sg 6.92 0
IV.LEOD.HNZ. 2018-02-09T17:04:30.44 3.0 undecidable manual Sg 1.56 0
IV.VENL.HNZ. 2018-02-09T17:04:13.18 3.0 undecidable manual S 0.95 0
IV.SBPO.HNZ. 2018-02-09T17:04:09.90 3.0 undecidable manual S -2.12 0
IV.NDIM.HNZ. 2018-02-09T17:04:03.62 3.0 undecidable manual S -6.03 0
IV.RUFI.EHZ. 2018-02-09T17:03:47.41 0.6 undecidable manual S 220 50.9157 50 0.23 46
IV.MTRZ.HNN. 2018-02-09T17:03:45.61 0.6 undecidable manual S 289 41.1255 50 1.04 35
IV.CPGN.EHZ. 2018-02-09T17:03:41.68 0.3 undecidable manual P 143 54.2013 50 0.97 54
IV.IMOL.EHE. 2018-02-09T17:03:39.65 0.6 undecidable manual S 324 23.0547 112 0.36 47
IV.RUFI.EHZ. 2018-02-09T17:03:39.45 0.1 undecidable manual P 220 50.9157 50 -0.76 79
IV.LMD.HHZ. 2018-02-09T17:03:39.27 0.6 undecidable manual S 232 20.868 114 0.67 43
IV.MTRZ.HNN. 2018-02-09T17:03:38.27 0.3 undecidable manual P 289 41.1255 50 -0.44 68
IV.BRIS.HHZ. 2018-02-09T17:03:36.88 0.6 undecidable manual S 287 12.2766 127 0.87 40
IV.BRSN.HNE. 2018-02-09T17:03:34.64 0.1 undecidable manual P 52 16.6722 119 0.15 100
IV.IMOL.EHE. 2018-02-09T17:03:34.94 0.3 undecidable manual P 324 23.0547 112 -0.72 63
IV.LMD.HHZ. 2018-02-09T17:03:34.84 0.1 positive manual P 232 20.868 114 -0.42 94
IV.BRIS.HHZ. 2018-02-09T17:03:33.54 0.1 positive manual P 287 12.2766 127 -0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.0 0.000104455465 0.2688 AML other m 2018-02-09T17:03:37.13
IV.BRIS.HHN. ML:1.1 0.00014256544500000003 0.256 AML other m 2018-02-09T17:03:37.22
IV.LMD.HHN. ML:1.8 0.00042348870000000004 0.2176 AML other m 2018-02-09T17:03:39.53
IV.LMD.HHE. ML:1.6 0.00026614525 0.256 AML other m 2018-02-09T17:03:39.41
IV.CPGN.HNE. ML:1.7 0.000118615865 0.7936 AML other m 2018-02-09T17:03:42.64
IV.RUFI.EHE. ML:1.1 0.000034955650000000005 0.256 AML other m 2018-02-09T17:03:47.66
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