Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 18-08-2017 and time 06:10:22 (Italy) in region 4 km N Galeata (FC)

A magnitude ML 1.1 earthquake occured in region: 4 km N Galeata (FC), on

  • 18-08-2017 04:10:22 (UTC)
  • 18-08-2017 06:10:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0360, 11.8990 at 53 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
Galeata FC 4 2516 2516
Civitella di Romagna FC 5 3786 6302
Rocca San Casciano FC 5 1910 8212
Portico e San Benedetto FC 9 756 8968
Dovadola FC 10 1653 10621
Santa Sofia FC 10 4136 14757
Predappio FC 10 6346 21103
Premilcuore FC 12 799 21902
Tredozio FC 13 1212 23114
Modigliana FC 16 4560 27674
Castrocaro Terme e Terra del Sole FC 16 6426 34100
Meldola FC 17 9970 44070

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Forlì (117913 inhabitants)
28 Km S of Faenza (58541 inhabitants)
30 Km W of Cesena (96758 inhabitants)
38 Km SE of Imola (69797 inhabitants)
49 Km SW of Ravenna (159116 inhabitants)
53 Km W of Rimini (147750 inhabitants)
59 Km E of Firenze (382808 inhabitants)
63 Km N of Arezzo (99543 inhabitants)
65 Km E of Scandicci (50609 inhabitants)
66 Km E of Prato (191150 inhabitants)
68 Km SE of Bologna (386663 inhabitants)
79 Km E of Pistoia (90315 inhabitants)
82 Km W of Pesaro (94582 inhabitants)
92 Km S of Ferrara (133155 inhabitants)
92 Km NE of Siena (53903 inhabitants)
92 Km W of Fano (60888 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 1.1 2017-08-18
04:10:22		 44.0357 11.8993 53 2018-07-06
15:40:36		 Bollettino Sismico Italiano INGV 54725131
Reviewed
Rev100 		ML 1.2 2017-08-18
04:10:22		 44.0535 11.9088 56 2017-08-18
04:18:13		 Sala Sismica INGV-Roma 49134331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-18 04:10:22 ± 0.33
Latitude 44.0357 ± 0.0153
Longitude 11.8993 ± 0.0175
Depth (km) 53 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 54725131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1562
Semi-minor axis of confidence ellipse (meter) 1230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 1560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.14389
Epicentral distance of station farthest from the epicenter (degree) 0.70777
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 54725131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-03-20 14:01:18

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 49134331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-18 04:18:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2017-08-18T04:10:47.99 0.3 undecidable manual S 137 75.2691 112 0.99 49
IV.CAFI.HHZ. 2017-08-18T04:10:47.39 0.3 undecidable manual S 176 78.5658 111 -0.26 65
IV.OSSC.HHZ. 2017-08-18T04:10:47.77 0.3 undecidable manual S 223 77.2671 112 0.38 63
IV.CRE.HHZ. 2017-08-18T04:10:41.05 0.6 undecidable manual S 175 46.4202 129 -0.58 43
IV.RUFI.EHZ. 2017-08-18T04:10:40.41 0.3 undecidable manual S 235 38.1285 136 0.1 71
IV.BRIS.HHZ. 2017-08-18T04:10:39.16 0.3 undecidable manual S 333 23.4543 151 0.73 63
IV.OSSC.HHZ. 2017-08-18T04:10:37.44 0.1 undecidable manual P 223 77.2671 112 0.43 83
IV.LMD.HHZ. 2017-08-18T04:10:37.26 0.3 undecidable manual S 287 15.9729 160 -0.5 69
IV.CAFI.HHZ. 2017-08-18T04:10:36.90 0.3 undecidable manual P 176 78.5658 111 -0.26 65
IV.PIEI.HHZ. 2017-08-18T04:10:36.68 0.3 undecidable manual P 137 75.2691 112 -0.1 67
IV.PARC.HHZ. 2017-08-18T04:10:34.00 0.1 undecidable manual P 148 50.8158 126 -0.11 94
IV.SSP9.EHZ. 2017-08-18T04:10:34.25 0.3 undecidable manual P 160 54.501 123 -0.24 68
IV.CPGN.EHZ. 2017-08-18T04:10:33.45 0.1 undecidable manual P 128 42.5241 132 0.14 94
IV.RUFI.EHZ. 2017-08-18T04:10:33.15 0.1 undecidable manual P 235 38.1285 136 0.23 93
IV.CRE.HHZ. 2017-08-18T04:10:33.45 0.1 undecidable manual P 175 46.4202 129 -0.23 92
IV.BRIS.HHZ. 2017-08-18T04:10:31.85 0.1 undecidable manual P 333 23.4543 151 0.01 100
IV.LMD.HHZ. 2017-08-18T04:10:30.92 0.1 undecidable manual P 287 15.9729 160 -0.53 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.3 0.00004863362 0.2592 AML other m 2017-08-18T04:10:39.22
IV.LMD.HHN. ML:1.3 0.000050669780000000006 0.2976 AML other m 2017-08-18T04:10:37.45
IV.BRIS.HHE. ML:1.1 0.00002527989 0.16 AML other m 2017-08-18T04:10:39.37
IV.BRIS.HHN. ML:1.6 0.00008027272 0.2208 AML other m 2017-08-18T04:10:39.63
IV.RUFI.EHE. ML:1.1 0.0000226664265 0.48 AML other m 2017-08-18T04:10:41.83
IV.RUFI.EHN. ML:0.9 0.000016682130000000003 0.32 AML other m 2017-08-18T04:10:42.61
IV.CRE.HHE. ML:1.0 0.000015094121 0.16 AML other m 2017-08-18T04:10:43.27
IV.CRE.HHN. ML:1.3 0.000030411739999999998 0.24 AML other m 2017-08-18T04:10:42.24
IV.PARC.HHE. ML:1.1 0.000020562280000000003 0.3584 AML other m 2017-08-18T04:10:45.49
IV.PARC.HHN. ML:1.2 0.00002419069 0.3008 AML other m 2017-08-18T04:10:44.12
IV.PIEI.HHE. ML:1.1 0.000015137045 0.24 AML other m 2017-08-18T04:10:52.20
IV.PIEI.HHN. ML:1.0 0.00001184672 0.3808 AML other m 2017-08-18T04:10:49.67
IV.CAFI.HHN. ML:1.0 0.000010242213 0.24 AML other m 2017-08-18T04:10:48.77
IV.CAFI.HHE. ML:1.0 0.000012106320000000001 0.72 AML other m 2017-08-18T04:10:53.55
IV.OSSC.HHE. ML:1.1 0.0000174565915 0.32 AML other m 2017-08-18T04:10:48.10
IV.OSSC.HHN. ML:1.3 0.000017816592499999998 0.4 AML other m 2017-08-18T04:10:47.97
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