Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 01-10-2016 and time 06:28:02 (Italy) in region 2 km W Monteriggioni (SI)

A magnitude ML 1.5 earthquake occured in region: 2 km W Monteriggioni (SI), on

  • 01-10-2016 04:28:02 (UTC)
  • 01-10-2016 06:28:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3870, 11.1980 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
Monteriggioni SI 2 9810 9810
Colle di Val d'Elsa SI 8 21620 31430
Poggibonsi SI 10 29196 60626
Castellina in Chianti SI 12 2859 63485
Sovicille SI 12 10116 73601
Siena SI 13 53903 127504
Casole d'Elsa SI 13 3897 131401
San Gimignano SI 15 7820 139221
Barberino Val d'Elsa FI 18 4386 143607
Radda in Chianti SI 18 1613 145220
Radicondoli SI 19 914 146134
Tavarnelle Val di Pesa FI 20 7800 153934

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of Siena (53903 inhabitants)
41 Km S of Scandicci (50609 inhabitants)
43 Km S of Firenze (382808 inhabitants)
56 Km S of Prato (191150 inhabitants)
56 Km W of Arezzo (99543 inhabitants)
65 Km SE of Pistoia (90315 inhabitants)
70 Km N of Grosseto (82087 inhabitants)
74 Km SE of Pisa (89158 inhabitants)
74 Km E of Livorno (159219 inhabitants)
76 Km SE of Lucca (89046 inhabitants)
93 Km SE of Viareggio (62467 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 1.5 2016-10-01
04:28:02		 43.3867 11.1977 8 2017-04-12
08:43:07		 Bollettino Sismico Italiano INGV 38804421
Reviewed
Rev100 		ML 1.5 2016-10-01
04:28:02		 43.4267 11.1073 4 2016-10-01
04:33:52		 Sala Sismica INGV-Roma 29730981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-01 04:28:02 ± 0.19
Latitude 43.3867 ± 0.0099
Longitude 11.1977 ± 0.0198
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 38804421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1730
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 1730.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.10972
Epicentral distance of station farthest from the epicenter (degree) 0.96317
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 38804421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-04-12 08:43:07

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 29730981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-01 04:33:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CASP.HHE. 2016-10-01T04:28:24.70 0.3 undecidable manual S 202 71.373 50 -0.3 66
IV.CAFI.HNN. 2016-10-01T04:28:22.50 0.3 undecidable manual S 96 62.2932 50 -0.08 70
IV.CELB.HHE. 2016-10-01T04:28:22.12 0.3 undecidable manual P 229 106.9152 50 0.99 48
IV.ARCI.HHZ. 2016-10-01T04:28:22.20 0.3 undecidable manual S 159 63.492 50 -0.68 60
IV.RUFI.EHZ. 2016-10-01T04:28:20.30 0.6 undecidable manual S 26 55.9995 50 -0.59 42
IV.MTCR.EHZ. 2016-10-01T04:28:17.39 0.6 undecidable manual P 348 72.8715 50 1.51 26
IV.CASP.HHE. 2016-10-01T04:28:16.40 0.3 undecidable manual P 202 71.373 50 0.75 57
IV.CRE.HHZ. 2016-10-01T04:28:15.56 0.3 undecidable manual P 67 65.8896 50 0.75 58
TV.SF01.EHN. 2016-10-01T04:28:15.90 0.3 undecidable manual P 155 70.2741 50 0.42 64
IV.TRIF.HHZ. 2016-10-01T04:28:15.20 0.3 undecidable manual S 218 38.4282 50 -1.01 54
IV.ASQU.HHZ. 2016-10-01T04:28:14.97 0.3 undecidable manual P 46 65.7897 50 0.18 68
IV.CAFI.HNN. 2016-10-01T04:28:14.58 0.1 undecidable manual P 96 62.2932 50 0.33 89
IV.ARCI.HHZ. 2016-10-01T04:28:14.58 0.3 undecidable manual P 159 63.492 50 0.15 69
IV.RUFI.EHZ. 2016-10-01T04:28:12.94 0.1 undecidable manual P 26 55.9995 50 -0.34 90
IV.TRIF.HHZ. 2016-10-01T04:28:10.00 0.3 undecidable manual P 218 38.4282 50 -0.57 65
IV.FROS.HHZ. 2016-10-01T04:28:10.30 0.3 undecidable manual S 190 19.869 113 -0.06 76
IV.FROS.HHZ. 2016-10-01T04:28:07.45 0.1 undecidable manual P 190 19.869 113 0.25 97
IV.CSNT.HHZ. 2016-10-01T04:28:07.40 0.3 undecidable manual S 38 12.1767 124 -0.58 68
IV.CSNT.HHZ. 2016-10-01T04:28:05.64 0.1 positive manual P 38 12.1767 124 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHE. ML:0.9 0.00001395 1.36 AML other m 2016-10-01T04:28:19.80
IV.ASQU.HHN. ML:1.0 0.0000188 1.46 AML other m 2016-10-01T04:28:29.98
IV.CSNT.HHN. ML:1.5 0.000389 0.4 AML other m 2016-10-01T04:28:07.64
IV.CSNT.HHE. ML:1.6 0.000472 0.32 AML other m 2016-10-01T04:28:07.82
IV.FROS.HHN. ML:1.7 0.000357 0.76 AML other m 2016-10-01T04:28:11.41
IV.FROS.HHE. ML:1.7 0.000416 1.72 AML other m 2016-10-01T04:28:11.01
IV.OSSC.HHN. ML:1.6 0.0003945 0.46 AML other m 2016-10-01T04:28:07.71
IV.OSSC.HNN. ML:1.7 0.00052071775 0.1696 AML other m 2016-10-01T04:28:07.72
IV.OSSC.HNE. ML:1.6 0.00035632755000000006 0.2688 AML other m 2016-10-01T04:28:07.84
IV.TRIF.HHN. ML:1.6 0.0001635 0.24 AML other m 2016-10-01T04:28:16.80
IV.TRIF.HHE. ML:1.4 0.00010240000000000001 1.88 AML other m 2016-10-01T04:28:15.05
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