Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 10-04-2019 and time 11:40:58 (Italy) in region 3 km E Chiusdino (SI)

A magnitude ML 1.1 earthquake occured in region: 3 km E Chiusdino (SI), on

  • 10-04-2019 09:40:58 (UTC)
  • 10-04-2019 11:40:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1530, 11.1290 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
Chiusdino SI 3 1903 1903
Monticiano SI 4 1571 3474
Montieri GR 9 1204 4678
Radicondoli SI 14 914 5592
Roccastrada GR 16 9199 14791
Sovicille SI 16 10116 24907
Castelnuovo di Val di Cecina PI 19 2231 27138

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SW of Siena (53903 inhabitants)
44 Km N of Grosseto (82087 inhabitants)
68 Km S of Scandicci (50609 inhabitants)
69 Km S of Firenze (382808 inhabitants)
70 Km SW of Arezzo (99543 inhabitants)
80 Km SE of Livorno (159219 inhabitants)
81 Km S of Prato (191150 inhabitants)
86 Km SE of Pisa (89158 inhabitants)
89 Km S of Pistoia (90315 inhabitants)
92 Km SE of Lucca (89046 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 2019-04-10
09:40:58		 43.1527 11.1293 8 2019-08-22
08:24:56		 Bollettino Sismico Italiano INGV 67601481
Reviewed
Rev100 		ML 2.1 2019-04-10
09:40:58		 43.1572 11.1817 6 2019-04-10
09:52:06		 Sala Sismica INGV-Roma 67427771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-10 09:40:58 ± 0.2
Latitude 43.1527 ± 0.0063
Longitude 11.1293 ± 0.0111
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 67601481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 949
Semi-minor axis of confidence ellipse (meter) 469
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 112
Circular confidence region, given by single value of horizontal uncertainty (meter) 950.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.80220
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 67601481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-01 13:28:49

ML:2.1

Field Value
Value 2.1
Uncertainty 1.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 67427771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-10 09:52:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPDG.HHZ. 2019-04-10T09:42:48.60 3.0 undecidable manual Pn -3.18 0
IV.ALJA.HHZ. 2019-04-10T09:42:44.53 3.0 undecidable manual Pg 19.610001 0
IV.TDS.HHZ. 2019-04-10T09:42:26.31 3.0 positive manual Pg 8.51 0
IV.RNI2.HHZ. 2019-04-10T09:42:23.72 3.0 undecidable manual Sg 7.89 0
IV.SGG.HHZ. 2019-04-10T09:42:23.23 3.0 undecidable manual Sn -0.53 0
IV.MTGR.HHZ. 2019-04-10T09:42:21.68 3.0 negative manual Pn 1.67 0
IV.VOBA.HNZ. 2019-04-10T09:42:15.10 3.0 undecidable manual Sg 4.04 0
IV.EUCT.HNZ. 2019-04-10T09:42:08.72 3.0 undecidable manual Sn -1.79 0
NI.VINO.HHZ. 2019-04-10T09:41:52.14 3.0 positive manual Pn -0.29 0
IV.MSSA.HHZ. 2019-04-10T09:41:42.22 3.0 undecidable manual Sn -7.56 0
IV.PTRJ.HNZ. 2019-04-10T09:41:42.47 3.0 undecidable manual Pn -5.71 0
IV.GIUL.HHZ. 2019-04-10T09:41:38.49 3.0 undecidable manual Pg 1.94 0
IV.PE3.EHZ. 2019-04-10T09:41:35.33 3.0 undecidable manual P 0
IV.ASQU.HHE. 2019-04-10T09:41:25.57 0.3 undecidable manual S 36 89.0442 50 -0.37 65
IV.MAON.HHZ. 2019-04-10T09:41:23.89 0.6 undecidable manual S 180 80.364 50 0.26 45
IV.RUFI.EHZ. 2019-04-10T09:41:23.91 0.6 undecidable manual S 22 81.9513 50 -0.14 46
IV.BRSN.EHZ. 2019-04-10T09:41:20.63 3.0 negative manual Pn -2.56 0
IV.ASSB.HHZ. 2019-04-10T09:41:19.35 3.0 undecidable manual P 0
IV.IMOL.EHZ. 2019-04-10T09:41:18.13 3.0 positive manual Pn -4.47 0
TV.SF11.HHZ. 2019-04-10T09:41:16.67 0.6 undecidable manual S 125 54.6009 50 -0.08 49
IV.CRE.HHZ. 2019-04-10T09:41:14.44 0.1 undecidable manual P 52 84.0492 50 0.65 80
IV.MAON.HHZ. 2019-04-10T09:41:14.01 0.3 undecidable manual P 180 80.364 50 0.8 57
IV.ASQU.HHE. 2019-04-10T09:41:14.98 0.3 undecidable manual P 36 89.0442 50 0.43 64
Z3.A318A.HHZ. 2019-04-10T09:41:13.76 0.6 undecidable manual S 266 45.1215 50 -0.47 46
IV.RUFI.EHZ. 2019-04-10T09:41:13.92 0.3 undecidable manual P 22 81.9513 50 0.46 65
IV.OSSC.HHZ. 2019-04-10T09:41:12.90 0.6 undecidable manual S 13 42.2244 50 -0.55 45
IV.CAFI.HHZ. 2019-04-10T09:41:11.48 0.1 undecidable manual P 74 70.374 50 -0.2 93
TV.SF11.HHZ. 2019-04-10T09:41:09.36 0.3 undecidable manual P 125 54.6009 50 0.11 73
TV.SF13.HHN. 2019-04-10T09:41:08.93 0.3 undecidable manual P 133 54.4011 50 -0.28 71
TV.SF01.EHZ. 2019-04-10T09:41:08.86 0.1 undecidable manual P 137 51.7038 50 0.06 99
TV.SF04.EHZ. 2019-04-10T09:41:08.69 0.3 undecidable manual P 129 55.5999 50 -0.71 62
Z3.A318A.HHZ. 2019-04-10T09:41:08.02 0.3 undecidable manual P 266 45.1215 50 0.23 73
IV.OSSC.HHZ. 2019-04-10T09:41:07.18 0.1 positive manual P 13 42.2244 50 -0.16 99
IV.RIBO.EHE. 2019-04-10T09:41:07.15 0.3 undecidable manual S 197 23.5542 108 -0.45 72
IV.CASP.HHZ. 2019-04-10T09:41:07.92 0.1 undecidable manual P 208 45.5211 50 0.08 100
IV.RIBO.EHE. 2019-04-10T09:41:04.04 0.3 undecidable manual P 197 23.5542 108 0.08 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.0 0.000034029945 0.1856 AML other m 2019-04-10T09:41:13.01
IV.OSSC.HHN. ML:1.0 0.000031342534999999996 0.3008 AML other m 2019-04-10T09:41:13.16
IV.CASP.HHE. ML:1.7 0.0001436287 0.1216 AML other m 2019-04-10T09:41:17.34
IV.CASP.HHN. ML:1.4 0.00007401133 0.3392 AML other m 2019-04-10T09:41:17.85
TV.SF04.EHE. ML:1.6 0.000097135245 0.1984 AML other m 2019-04-10T09:41:19.45
TV.SF04.EHN. ML:1.5 0.00007433953 0.1792 AML other m 2019-04-10T09:41:19.61
IV.CAFI.HHN. ML:0.8 0.000009087594 0.2752 AML other m 2019-04-10T09:41:20.19
IV.CAFI.HHE. ML:0.8 0.0000078504475 0.2816 AML other m 2019-04-10T09:41:20.51
IV.CRE.HHN. ML:0.9 0.000010688703000000001 0.8832 AML other m 2019-04-10T09:41:23.55
IV.ASSB.HHE. ML:1.3 0.000014387655000000001 0.3008 AML other m 2019-04-10T09:41:24.41
IV.CRE.HHE. ML:0.9 0.0000098625515 0.5248 AML other m 2019-04-10T09:41:24.70
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 Download