Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 09-12-2019 and time 06:57:04 (Italy) in region 6 km N Scarperia e San Piero (FI)

A magnitude ML 1.2 earthquake occured in region: 6 km N Scarperia e San Piero (FI), on

  • 09-12-2019 05:57:04 (UTC)
  • 09-12-2019 06:57:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0130, 11.3200 at 7 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 6 12217 12217
Barberino di Mugello FI 7 10836 23053
Borgo San Lorenzo FI 8 18211 41264
Vaglia FI 12 5073 46337
Firenzuola FI 13 4726 51063
Vernio PO 14 6060 57123
Vicchio FI 15 8044 65167
Vaiano PO 16 9895 75062
Cantagallo PO 17 3105 78167
Castiglione dei Pepoli BO 20 5648 83815

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Prato (191150 inhabitants)
28 Km N of Firenze (382808 inhabitants)
30 Km NE of Scandicci (50609 inhabitants)
33 Km E of Pistoia (90315 inhabitants)
49 Km SW of Imola (69797 inhabitants)
54 Km S of Bologna (386663 inhabitants)
54 Km SW of Faenza (58541 inhabitants)
62 Km W of Forlì (117913 inhabitants)
68 Km E of Lucca (89046 inhabitants)
75 Km W of Cesena (96758 inhabitants)
76 Km NW of Arezzo (99543 inhabitants)
77 Km SE of Modena (184973 inhabitants)
77 Km N of Siena (53903 inhabitants)
81 Km E of Pisa (89158 inhabitants)
83 Km SW of Ravenna (159116 inhabitants)
87 Km E of Viareggio (62467 inhabitants)
92 Km SE of Carpi (70699 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km E of Massa (69479 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
96 Km NE of Livorno (159219 inhabitants)
98 Km E of Carrara (63133 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 1.2 2019-12-09
05:57:04		 44.0132 11.3203 7 2020-02-28
16:42:26		 Bollettino Sismico Italiano INGV 76622031
Reviewed
Rev100 		ML 1.3 2019-12-09
05:57:04		 44.0168 11.3232 7 2019-12-09
06:05:19		 Sala Sismica INGV-Roma 74465631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 05:57:04 ± 0.05
Latitude 44.0132 ± 0.0027
Longitude 11.3203 ± 0.0025
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76622031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 267
Semi-minor axis of confidence ellipse (meter) 247
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 191
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49193
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 76622031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-18 10:41:57

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 74465631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 06:05:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2019-12-09T05:58:54.80 3.0 undecidable manual Sg 9.28 0
IV.MTGR.HHZ. 2019-12-09T05:58:40.07 3.0 undecidable manual Pn 1.96 0
CR.ZAG.BHZ. 2019-12-09T05:58:16.20 3.0 positive manual Pg 11.11 0
IV.VAGA.HHZ. 2019-12-09T05:58:10.00 3.0 negative manual Pg 10.81 0
IV.ARVD.HHZ. 2019-12-09T05:57:48.19 3.0 undecidable manual S -2.06 0
IV.CAPR.HNZ. 2019-12-09T05:57:39.69 3.0 undecidable manual Pg 0.37 0
IV.EL6.EHZ. 2019-12-09T05:57:35.59 3.0 undecidable manual P 2.51 0
IV.CPGN.EHZ. 2019-12-09T05:57:32.63 3.0 undecidable manual S -1.53 0
IV.OSSC.HHZ. 2019-12-09T05:57:22.15 0.6 undecidable manual S 186 54.6009 50 -0.02 47
IV.ASQU.HHZ. 2019-12-09T05:57:19.58 0.6 undecidable manual S 122 44.5221 50 0.11 48
IV.LMD.HHZ. 2019-12-09T05:57:15.56 0.6 undecidable manual S 77 31.6461 103 -0.04 49
IV.OSSC.HHZ. 2019-12-09T05:57:14.46 0.1 undecidable manual P 186 54.6009 50 -0.17 92
IV.RUFI.EHZ. 2019-12-09T05:57:13.13 0.6 undecidable manual S 142 24.6531 107 -0.1 49
IV.ASQU.HHZ. 2019-12-09T05:57:13.15 0.3 undecidable manual P 122 44.5221 50 0.09 72
IT.FIE.HGZ. 2019-12-09T05:57:12.53 0.6 undecidable manual S 185 22.9548 108 -0.15 49
IV.MPPT.EHZ. 2019-12-09T05:57:11.30 0.6 undecidable manual S 252 19.3695 111 -0.21 49
IV.MTRZ.HNZ. 2019-12-09T05:57:11.22 0.6 undecidable manual P 14 34.2435 102 -0.12 48
IV.LMD.HHZ. 2019-12-09T05:57:10.72 0.1 undecidable manual P 77 31.6461 103 -0.11 97
IT.FIE.HGZ. 2019-12-09T05:57:09.23 0.1 undecidable manual P 185 22.9548 108 0.09 99
IV.RUFI.EHZ. 2019-12-09T05:57:09.62 0.1 undecidable manual P 142 24.6531 107 0.15 98
IV.MOCL.EHZ. 2019-12-09T05:57:08.88 0.6 undecidable manual S 265 11.1777 124 -0.09 51
IV.MPPT.EHZ. 2019-12-09T05:57:08.55 0.1 undecidable manual P 252 19.3695 111 0.08 100
IV.MOCL.EHZ. 2019-12-09T05:57:07.20 0.1 undecidable manual P 265 11.1777 124 0.2 99
IV.SEI.HHZ. 2019-12-09T05:57:05.24 3.0 undecidable manual S 5.4945 -2.27 0
IV.SEI.HHZ. 2019-12-09T05:57:03.79 3.0 undecidable manual P 5.4945 -2.37 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:1.7 0.0006670000000000001 0.5 AML other m 2019-12-09T05:57:09.08
IV.MOCL.EHE. ML:1.4 0.0003565 0.1 AML other m 2019-12-09T05:57:09.12
IV.MPPT.EHE. ML:1.2 0.0001453 0.8 AML other m 2019-12-09T05:57:12.47
IV.MPPT.EHN. ML:1.3 0.00016149999999999997 0.8 AML other m 2019-12-09T05:57:12.48
IV.RUFI.EHN. ML:0.9 0.000044032845 0.88 AML other m 2019-12-09T05:57:13.36
IV.RUFI.EHE. ML:1.1 0.000081819315 0.5024 AML other m 2019-12-09T05:57:14.61
IV.LMD.HHN. ML:1.2 0.00007528734000000001 0.2816 AML other m 2019-12-09T05:57:15.94
IV.LMD.HHE. ML:1.0 0.000052026719999999996 0.2976 AML other m 2019-12-09T05:57:17.34
IV.ASQU.HHE. ML:1.2 0.00004473426 0.0192 AML other m 2019-12-09T05:57:18.73
IV.ASQU.HHN. ML:1.1 0.000038334225 0.5792 AML other m 2019-12-09T05:57:19.83
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