Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.8 on date 19-07-2018 and time 11:57:00 (Italy) in region 7 km W Campagnatico (GR)

A magnitude ML 1.8 (quarry blast) earthquake occured in region: 7 km W Campagnatico (GR), on

  • 19-07-2018 09:57:00 (UTC)
  • 19-07-2018 11:57:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8650, 11.1920 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Campagnatico GR 7 2412 2412
Grosseto GR 13 82087 84499
Civitella Paganico GR 16 3154 87653
Roccastrada GR 17 9199 96852
Cinigiano GR 17 2618 99470

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NE of Grosseto (82087 inhabitants)
52 Km S of Siena (53903 inhabitants)
87 Km SW of Arezzo (99543 inhabitants)
90 Km NW of Viterbo (67173 inhabitants)
99 Km NW of Civitavecchia (52991 inhabitants)
100 Km S of Scandicci (50609 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 1.8 2018-07-19
09:57:00		 42.8647 11.1918 1 2019-04-24
14:50:56		 Bollettino Sismico Italiano INGV 61413631
Reviewed
Rev100 		ML 1.8 2018-07-19
09:57:00		 42.8703 11.1842 9 2018-07-19
10:29:43		 Sala Sismica INGV-Roma 58880871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-07-19 09:57:00 ± 0.11
Latitude 42.8647 ± 0.0090
Longitude 11.1918 ± 0.0086
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 61413631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1090
Semi-minor axis of confidence ellipse (meter) 610
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 1090.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43797
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 61413631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-21 09:36:18

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 58880871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-07-19 10:29:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2018-07-19T09:57:47.40 3.0 undecidable manual S -0.49 0
IV.MAON.HHZ. 2018-07-19T09:57:10.02 0.3 undecidable manual P 186 48.618 91 -0.15 71
TV.SF04.EHZ. 2018-07-19T09:57:08.10 0.3 undecidable manual P 95 38.2284 91 0.02 74
IV.MCIV.HHN. 2018-07-19T09:57:08.41 0.3 undecidable manual P 103 40.5261 91 -0.14 72
TV.SF03.EHN. 2018-07-19T09:57:08.67 0.3 undecidable manual P 100 40.7259 91 0.09 72
IV.FROS.HHE. 2018-07-19T09:57:07.70 0.3 undecidable manual P 356 38.4282 91 -0.41 68
TV.SF14.HHE. 2018-07-19T09:57:07.31 0.3 undecidable manual P 109 36.4413 91 -0.42 68
TV.SF13.HHE. 2018-07-19T09:57:07.49 0.3 undecidable manual P 98 35.1426 91 0.03 74
IV.TRIF.HHN. 2018-07-19T09:57:07.30 0.3 undecidable manual P 320 36.3414 91 -0.4 68
TV.SF01.EHZ. 2018-07-19T09:57:06.90 0.3 undecidable manual P 101 30.747 91 0.32 70
IV.ARCI.HHZ. 2018-07-19T09:57:05.36 0.3 undecidable manual P 93 23.0547 91 0.31 71
IV.CASP.HHZ. 2018-07-19T09:57:05.96 0.1 undecidable manual P 253 27.8499 91 -0.03 100
IV.RIBO.EHZ.01 2018-07-19T09:57:04.03 0.1 undecidable manual P 308 15.0738 92 0.59 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RIBO.EHE.01 ML:2.0 0.0012476245 0.3392 AML other m 2018-07-19T09:57:08.36
IV.ARCI.HHE. ML:1.6 0.0002685 0.48 AML other m 2018-07-19T09:57:11.32
IV.CASP.HHN. ML:1.3 0.00011300000000000001 1.36 AML other m 2018-07-19T09:57:11.17
TV.SF01.EHN. ML:1.6 0.00019250000000000002 0.76 AML other m 2018-07-19T09:57:12.38
IV.ARCI.HHN. ML:1.3 0.00013700000000000002 0.32 AML other m 2018-07-19T09:57:12.62
TV.SF01.EHE. ML:1.9 0.000391 0.32 AML other m 2018-07-19T09:57:12.33
IV.CASP.HHE. ML:1.3 0.000118 0.32 AML other m 2018-07-19T09:57:12.56
TV.SF04.EHE. ML:2.1 0.0005290000000000001 0.3 AML other m 2018-07-19T09:57:14.84
TV.SF04.EHN. ML:2.0 0.00041400000000000003 0.74 AML other m 2018-07-19T09:57:16.37
IV.OSSC.HHN. ML:2.0 0.0001705 0.1 AML other m 2018-07-19T09:57:23.99
IV.OSSC.HHE. ML:1.9 0.00011300000000000001 1.66 AML other m 2018-07-19T09:57:33.11
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