Earthquake with magnitude of ML 1.0 on date 03-08-2013 and time 07:51:13 (Italy) in region 2 km N Vaiano (PO)

A magnitude ML 1.0 earthquake occured in region: 2 km N Vaiano (PO), on

  • 03-08-2013 05:51:13 (UTC)
  • 03-08-2013 07:51:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.98, 11.12 at 55 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Vaiano PO 2 9895 9895
Cantagallo PO 5 3105 13000
Vernio PO 8 6060 19060
Montemurlo PO 9 18456 37516
Montale PT 10 10737 48253
Barberino di Mugello FI 10 10836 59089
Prato PO 12 191150 250239
Agliana PT 13 17525 267764
Calenzano FI 14 17489 285253
Vaglia FI 16 5073 290326
Scarperia e San Piero FI 16 12217 302543
Sambuca Pistoiese PT 17 1626 304169
Pistoia PT 17 90315 394484
Castiglione dei Pepoli BO 18 5648 400132
Sesto Fiorentino FI 18 48958 449090
Campi Bisenzio FI 18 46166 495256
Quarrata PT 19 26190 521446
Poggio a Caiano PO 19 10007 531453

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Prato (191150 inhabitants)
17 Km E of Pistoia (90315 inhabitants)
26 Km N of Scandicci (50609 inhabitants)
26 Km NW of Firenze (382808 inhabitants)
52 Km E of Lucca (89046 inhabitants)
60 Km SW of Bologna (386663 inhabitants)
63 Km SW of Imola (69797 inhabitants)
65 Km E of Pisa (89158 inhabitants)
70 Km W of Faenza (58541 inhabitants)
71 Km E of Viareggio (62467 inhabitants)
75 Km S of Modena (184973 inhabitants)
76 Km N of Siena (53903 inhabitants)
78 Km W of Forlì (117913 inhabitants)
79 Km E of Massa (69479 inhabitants)
81 Km NE of Livorno (159219 inhabitants)
83 Km E of Carrara (63133 inhabitants)
84 Km NW of Arezzo (99543 inhabitants)
89 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km S of Carpi (70699 inhabitants)
91 Km W of Cesena (96758 inhabitants)
99 Km W of Ravenna (159116 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 1.0 2013-08-03
05:51:13
43.98 11.12 55 2015-01-20
11:28:20
Bollettino Sismico Italiano INGV 4337051
Rev 100 ML 0.9 2013-08-03
05:51:13
43.99 11.11 53 2014-10-21
12:08:56
Sala Sismica INGV-Roma 4193951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-08-03 05:51:13 ± 0.35
Latitude 43.98 ± 0.02
Longitude 11.12 ± 0.02
Depth (km) 55 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4337051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2173
Semi-minor axis of confidence ellipse (meter) 1691
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 2170
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.51621
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 4337051
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 12:59:46

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 4193951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-08-03 05:59:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.OSSC.HHE. 2013-08-03T05:51:34.40 0.3 undecidable manual S 169 0.4694 126 1.01 67
IV.ASQU.HHZ. 2013-08-03T05:51:33.90 0.3 undecidable manual S 111 0.5162 123 -0.42 68
GU.MAIM.HHZ. 2013-08-03T05:51:32.70 0.3 undecidable manual S 261 0.4587 127 -0.49 63
IV.RUFI.EHZ. 2013-08-03T05:51:30.10 0.1 undecidable manual S 117 0.3157 140 -0.61 93
GU.POPM.HHZ. 2013-08-03T05:51:29.60 0.3 undecidable manual S 283 0.2689 145 -0.43 76
IV.CRMI.HHZ. 2013-08-03T05:51:29.70 0.1 undecidable manual S 208 0.214 151 0.36 96
IV.MTCR.EHZ. 2013-08-03T05:51:28.10 0.3 undecidable manual S 297 0.0962 167 -0.22 74
IV.ASQU.HHZ. 2013-08-03T05:51:25.30 0.6 undecidable manual P 111 0.5162 123 -0.2 46
IV.OSSC.HHE. 2013-08-03T05:51:25.64 0.1 undecidable manual P 169 0.4694 126 0.68 93
IV.MTRZ.HHE. 2013-08-03T05:51:24.51 0.3 undecidable manual P 33 0.3939 133 0.35 61
GU.MAIM.HHZ. 2013-08-03T05:51:24.64 0.6 undecidable manual P 261 0.4587 127 -0.2 45
IV.RUFI.EHZ. 2013-08-03T05:51:23.13 0.3 undecidable manual P 117 0.3157 140 -0.28 72
GU.POPM.HHZ. 2013-08-03T05:51:22.70 0.3 undecidable manual P 283 0.2689 145 -0.32 73
IV.FIR.HHE. 2013-08-03T05:51:22.17 0.3 undecidable manual P 155 0.2311 149 -0.57 65
IV.CRMI.HHZ. 2013-08-03T05:51:22.92 0.1 undecidable manual P 208 0.214 151 0.3 100
IV.SEI.HHZ. 2013-08-03T05:51:22.58 0.3 undecidable manual P 68 0.1844 155 0.14 72
IV.MTCR.EHZ. 2013-08-03T05:51:21.84 0.6 undecidable manual P 297 0.0962 167 -0.2 53
IV.PTF.SHE. 2013-08-03T05:51:21.99 0.3 undecidable manual P 237 0.0441 174 0.08 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHN. ML:0.8 1.225E-5 0.2 AML other m 2013-08-03T05:51:29.97
IV.CRMI.HHE. ML:0.6 9.155E-6 0.44 AML other m 2013-08-03T05:51:30.35
GU.POPM.HHN. ML:1.3 4.27E-5 0.38 AML other m 2013-08-03T05:51:30.02
GU.POPM.HHE. ML:1.2 3.16E-5 1 AML other m 2013-08-03T05:51:30.47
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download