Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-04-2014 and time 20:41:25 (UTC) in region 6 km SW Santa Sofia (FC)

A magnitude ML 1.4 earthquake occured in region: 6 km SW Santa Sofia (FC), on

  • 17-04-2014 20:41:25 (UTC)
  • 17-04-2014 22:41:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8980, 11.8690 at 18 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Santa Sofia FC 6 4136 4136
Bagno di Romagna FC 10 6026 10162
Galeata FC 12 2516 12678
Premilcuore FC 12 799 13477
Civitella di Romagna FC 13 3786 17263
Verghereto FC 16 1907 19170
Portico e San Benedetto FC 16 756 19926
Pratovecchio Stia AR 17 5845 25771
Rocca San Casciano FC 18 1910 27681

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SW of Forlì (117913 inhabitants)
40 Km SW of Cesena (96758 inhabitants)
43 Km S of Faenza (58541 inhabitants)
48 Km N of Arezzo (99543 inhabitants)
51 Km E of Firenze (382808 inhabitants)
52 Km S of Imola (69797 inhabitants)
57 Km E of Scandicci (50609 inhabitants)
59 Km W of Rimini (147750 inhabitants)
62 Km E of Prato (191150 inhabitants)
64 Km SW of Ravenna (159116 inhabitants)
76 Km E of Pistoia (90315 inhabitants)
78 Km NE of Siena (53903 inhabitants)
79 Km SE of Bologna (386663 inhabitants)
84 Km W of Pesaro (94582 inhabitants)
93 Km W of Fano (60888 inhabitants)
97 Km NW of Perugia (166134 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
Reviewed
Rev100 		ML 1.4 2014-04-17
20:41:25		 43.8982 11.8688 18 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 6215211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-04-17 20:41:25 ± 0.09
Latitude 43.8982 ± 0.0036
Longitude 11.8688 ± 0.0087
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 6215211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 551
Semi-minor axis of confidence ellipse (meter) 500
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.01709
Epicentral distance of station farthest from the epicenter (degree) 0.36512
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 6215211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-04-17 20:48:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRIS.HHZ. 2014-04-17T20:41:38.21 0.3 undecidable manual S 347 37.1295 105 0.32 68
IV.PARC.HHZ. 2014-04-17T20:41:38.84 0.1 undecidable manual S 133 40.5261 104 0.06 96
IV.RUFI.EHZ. 2014-04-17T20:41:36.00 0.3 undecidable manual S 257 29.5482 111 0.04 72
IV.CRE.HHZ. 2014-04-17T20:41:36.59 0.1 undecidable manual S 168 31.6461 109 0.09 96
IV.LMD.HHZ. 2014-04-17T20:41:34.27 0.3 undecidable manual S 327 23.6541 117 -0.27 70
IV.PARC.HHZ. 2014-04-17T20:41:32.99 0.1 undecidable manual P 133 40.5261 104 -0.08 94
IV.ASQU.HHZ. 2014-04-17T20:41:32.36 0.3 undecidable manual S 210 12.876 138 0.12 74
IV.BRIS.HHZ. 2014-04-17T20:41:32.84 0.1 undecidable manual P 347 37.1295 105 0.28 91
IV.RUFI.EHZ. 2014-04-17T20:41:31.38 0.1 undecidable manual P 257 29.5482 111 -0.06 97
IV.CRE.HHZ. 2014-04-17T20:41:31.68 0.1 undecidable manual P 168 31.6461 109 -0.08 96
IV.LMD.HHZ. 2014-04-17T20:41:30.30 0.1 negative manual P 327 23.6541 117 -0.33 93
IV.SFI.EHZ. 2014-04-17T20:41:30.99 0.3 undecidable manual S 293 1.8981 173 0.02 76
IV.ASQU.HHZ. 2014-04-17T20:41:29.34 0.1 positive manual P 210 12.876 138 0.05 100
IV.SFI.EHZ. 2014-04-17T20:41:28.39 1.0 undecidable manual P 293 1.8981 173 -0.18 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHE. ML:1.3 0.0001467 2.46 AML other m 2014-04-17T20:41:33.72
IV.ASQU.HHN. ML:1.3 0.0001635 0.52 AML other m 2014-04-17T20:41:33.68
IV.CRE.HHN. ML:1.4 0.00009315 0.22 AML other m 2014-04-17T20:41:37.91
IV.CRE.HHE. ML:1.3 0.00008405 3.3 AML other m 2014-04-17T20:41:37.07
IV.LMD.HHN. ML:1.1 0.0000626 0.68 AML other m 2014-04-17T20:41:35.58
IV.LMD.HHE. ML:1.5 0.0001505 0.3 AML other m 2014-04-17T20:41:35.71
IV.SFI.EHN. ML:1.6 0.00042300000000000004 0.24 AML other m 2014-04-17T20:41:31.19
IV.SFI.EHE. ML:1.5 0.00028500000000000004 0.16 AML other m 2014-04-17T20:41:31.29
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