Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 09-12-2019 and time 03:36:52 (UTC) in region 4 km N Scarperia e San Piero (FI)

A magnitude ML 2.1 earthquake occured in region: 4 km N Scarperia e San Piero (FI), on

  • 09-12-2019 03:36:52 (UTC)
  • 09-12-2019 04:36:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0040, 11.3240 at 8 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
Scarperia e San Piero FI 5 12217 12217
Barberino di Mugello FI 7 10836 23053
Borgo San Lorenzo FI 7 18211 41264
Vaglia FI 11 5073 46337
Firenzuola FI 14 4726 51063
Vicchio FI 14 8044 59107
Vernio PO 15 6060 65167
Vaiano PO 16 9895 75062
Cantagallo PO 17 3105 78167
Calenzano FI 20 17489 95656

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Prato (191150 inhabitants)
27 Km N of Firenze (382808 inhabitants)
30 Km NE of Scandicci (50609 inhabitants)
33 Km E of Pistoia (90315 inhabitants)
50 Km SW of Imola (69797 inhabitants)
55 Km SW of Faenza (58541 inhabitants)
55 Km S of Bologna (386663 inhabitants)
62 Km W of Forlì (117913 inhabitants)
68 Km E of Lucca (89046 inhabitants)
75 Km NW of Arezzo (99543 inhabitants)
75 Km W of Cesena (96758 inhabitants)
76 Km N of Siena (53903 inhabitants)
78 Km SE of Modena (184973 inhabitants)
81 Km E of Pisa (89158 inhabitants)
84 Km SW of Ravenna (159116 inhabitants)
87 Km E of Viareggio (62467 inhabitants)
93 Km SE of Carpi (70699 inhabitants)
95 Km E of Massa (69479 inhabitants)
95 Km SE of Reggio nell'Emilia (171345 inhabitants)
96 Km NE of Livorno (159219 inhabitants)
96 Km S of Ferrara (133155 inhabitants)
98 Km E of Carrara (63133 inhabitants)
100 Km W of Rimini (147750 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 2.1 2019-12-09
03:36:52		 44.0038 11.324 8 2020-02-28
16:42:26		 Bollettino Sismico Italiano INGV 76653321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 03:36:52 ± 0.07
Latitude 44.0038 ± 0.0045
Longitude 11.3240 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76653321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 362
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 358
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.68708
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 24
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 76653321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-19 17:33:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2019-12-09T03:37:11.39 0.6 undecidable manual S 183 58.8966 50 0.42 43
IV.BDI.HHZ. 2019-12-09T03:37:10.51 0.6 undecidable manual S 277 58.497 50 -0.34 44
IV.OSSC.HHZ. 2019-12-09T03:37:09.83 0.6 undecidable manual S 187 53.6019 50 0.27 45
IV.BRIS.HHZ. 2019-12-09T03:37:07.76 0.3 undecidable manual S 55 42.9237 50 1.06 51
GU.POPM.HHZ. 2019-12-09T03:37:07.17 0.6 undecidable manual S 276 45.4212 50 -0.2 46
IV.ASQU.HHZ. 2019-12-09T03:37:06.74 0.6 undecidable manual S 122 43.7229 50 -0.17 47
IV.SFI.EHZ. 2019-12-09T03:37:06.72 0.6 undecidable manual S 105 43.2234 50 -0.05 48
GU.SARM.EHN. 2019-12-09T03:37:05.65 0.6 undecidable manual P 286 76.2681 50 -0.03 45
IV.CRMI.HHZ. 2019-12-09T03:37:05.08 0.6 undecidable manual S 230 35.9418 50 0.24 47
IV.PII.HHZ. 2019-12-09T03:37:04.77 0.3 undecidable manual P 244 71.1732 50 -0.13 67
GU.MAIM.HHZ. 2019-12-09T03:37:04.15 1.0 undecidable manual P 262 67.1772 50 -0.14 22
IV.CRE.HHZ. 2019-12-09T03:37:04.27 0.6 undecidable manual P 130 65.9895 50 0.17 45
GU.GSCL.HHN. 2019-12-09T03:37:04.93 0.3 undecidable manual P 304 70.0743 50 0.2 66
IV.LMD.HHZ. 2019-12-09T03:37:03.00 0.6 undecidable manual S 75 31.6461 105 -0.49 45
IV.IMOL.HNZ. 2019-12-09T03:37:03.15 0.6 undecidable manual P 40 51.6039 50 1.26 31
GU.CARD.HHZ. 2019-12-09T03:37:03.77 0.3 undecidable manual P 272 67.1772 50 -0.52 62
IV.BDI.HHZ. 2019-12-09T03:37:02.59 0.1 negative manual P 277 58.497 50 -0.35 87
IV.CSNT.HHZ. 2019-12-09T03:37:02.85 0.3 undecidable manual P 183 58.8966 50 -0.17 68
IV.OSSC.HHZ. 2019-12-09T03:37:02.05 0.3 undecidable manual P 187 53.6019 50 -0.15 69
IV.ZCCA.HNN. 2019-12-09T03:37:02.71 0.6 undecidable manual P 324 47.4192 50 1.47 27
IV.FIR.HNE. 2019-12-09T03:37:01.87 0.6 undecidable manual S 192 26.0517 107 0.25 47
GU.POPM.HHZ. 2019-12-09T03:37:00.49 0.1 positive manual P 276 45.4212 50 -0.45 88
IV.MPPT.EHZ. 2019-12-09T03:37:00.05 0.6 undecidable manual S 255 19.3695 113 0.61 44
IT.FIE.HGE. 2019-12-09T03:37:00.32 0.6 undecidable manual S 186 21.9669 110 0.05 50
IV.ASQU.HHZ. 2019-12-09T03:37:00.36 0.3 undecidable manual P 122 43.7229 50 -0.31 68
IV.FNVD.HHZ. 2019-12-09T03:37:00.89 0.6 undecidable manual S 319 24.2535 109 -0.14 49
IV.BRIS.HHZ. 2019-12-09T03:37:00.61 0.3 undecidable manual P 55 42.9237 50 0.06 72
IV.RUFI.EHZ. 2019-12-09T03:37:00.83 0.6 undecidable manual S 141 23.6541 109 0.01 50
IV.SFI.EHZ. 2019-12-09T03:37:00.31 0.3 undecidable manual P 105 43.2234 50 -0.28 69
IV.MTRZ.HNN. 2019-12-09T03:36:59.61 0.3 undecidable manual P 13 35.2425 50 0.25 70
IV.CRMI.HHZ. 2019-12-09T03:36:59.24 0.3 undecidable manual P 230 35.9418 50 -0.23 70
IV.LMD.HHZ. 2019-12-09T03:36:58.22 0.1 positive manual P 75 31.6461 105 -0.47 89
IV.MOCL.EHZ. 2019-12-09T03:36:57.07 0.3 undecidable manual S 271 11.4774 126 0.04 76
IV.RUFI.EHZ. 2019-12-09T03:36:57.14 0.1 undecidable manual P 141 23.6541 109 -0.02 100
IV.FIR.HNE. 2019-12-09T03:36:57.88 0.3 undecidable manual P 192 26.0517 107 0.26 71
IV.FNVD.HHZ. 2019-12-09T03:36:57.09 0.3 undecidable manual P 319 24.2535 109 -0.18 72
IV.MPPT.EHZ. 2019-12-09T03:36:56.47 0.1 positive manual P 255 19.3695 113 0.11 99
IT.FIE.HGE. 2019-12-09T03:36:56.86 0.1 undecidable manual P 186 21.9669 110 0.02 100
IV.MOCL.EHZ. 2019-12-09T03:36:55.16 0.1 undecidable manual P 271 11.4774 126 0.2 98
IV.SEI.HHZ. 2019-12-09T03:36:52.83 3.0 undecidable manual S 6.1938 -2.89 0
IV.SEI.HHZ. 2019-12-09T03:36:51.45 3.0 undecidable manual P 6.1938 -2.76 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:2.6 0.004961379999999999 0.2 AML other m 2019-12-09T03:36:57.29
IV.RUFI.EHE. ML:1.8 0.00036954535 0.2192 AML other m 2019-12-09T03:37:01.24
IV.LMD.HHE. ML:2.3 0.00098737225 0.3392 AML other m 2019-12-09T03:37:03.26
IV.SFI.EHE. ML:1.7 0.00016688 0.2208 AML other m 2019-12-09T03:37:06.92
GU.POPM.HHN. ML:2.4 0.00080733215 0.2 AML other m 2019-12-09T03:37:07.51
IV.OSSC.HNN. ML:2.2 0.00034333215 0.3392 AML other m 2019-12-09T03:37:10.29
IV.BDI.HHE. ML:2.1 0.00024807839999999997 0.96 AML other m 2019-12-09T03:37:10.91
IV.PII.HHN. ML:1.7 0.000080447605 1.12 AML other m 2019-12-09T03:37:10.22
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 not available