Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 09-03-2018 and time 11:54:25 (Italy) in region 8 km W Campagnatico (GR)

A magnitude ML 1.7 earthquake occured in region: 8 km W Campagnatico (GR), on

  • 09-03-2018 10:54:25 (UTC)
  • 09-03-2018 11:54:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8620, 11.1790 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
Campagnatico GR 8 2412 2412
Grosseto GR 12 82087 84499
Roccastrada GR 17 9199 93698
Civitella Paganico GR 17 3154 96852
Cinigiano GR 18 2618 99470

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NE of Grosseto (82087 inhabitants)
52 Km S of Siena (53903 inhabitants)
88 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 1.7 2018-03-09
10:54:25		 42.8625 11.1793 8 2019-04-24
14:49:42		 Bollettino Sismico Italiano INGV 59512541
Reviewed
Rev100 		ML 1.7 2018-03-09
10:54:25		 42.8582 11.1762 9 2018-03-09
11:03:20		 Sala Sismica INGV-Roma 54473251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-03-09 10:54:25 ± 0.09
Latitude 42.8625 ± 0.0063
Longitude 11.1793 ± 0.0049
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 59512541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 653
Semi-minor axis of confidence ellipse (meter) 403
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 205
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56028
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 59512541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-08 11:44:02

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 54473251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-03-09 11:03:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MAON.HHZ. 2018-03-09T10:54:41.90 1.0 undecidable manual S 185 48.3183 50 0.63 21
TV.SF03.EHZ. 2018-03-09T10:54:39.60 0.3 undecidable manual S 99 41.7249 50 0.1 74
TV.SF04.EHZ. 2018-03-09T10:54:39.40 0.6 undecidable manual S 94 39.2274 50 0.56 44
IV.CAFI.HHZ. 2018-03-09T10:54:39.55 3.0 undecidable manual S 0
IV.FROS.HHE. 2018-03-09T10:54:38.70 0.6 undecidable manual S 357 38.5281 50 0.04 50
TV.SF14.HHE. 2018-03-09T10:54:38.00 1.0 undecidable manual S 108 37.3293 50 -0.34 23
TV.SF11.HHE. 2018-03-09T10:54:38.80 0.3 undecidable manual S 89 40.626 50 -0.41 69
IV.TRIF.HHZ. 2018-03-09T10:54:38.40 0.3 undecidable manual S 321 35.8419 50 0.45 69
TV.SF13.HHE. 2018-03-09T10:54:38.40 1.0 undecidable manual S 98 36.1416 50 0.38 23
IV.MAGO.HHE. 2018-03-09T10:54:36.70 0.3 undecidable manual P 317 62.1933 50 0.05 72
IV.CASP.HHZ. 2018-03-09T10:54:35.00 0.3 undecidable manual S 253 26.751 107 -0.04 77
IV.ARCI.HHZ. 2018-03-09T10:54:34.10 0.6 undecidable manual S 93 24.0537 109 -0.06 51
IV.MAON.HHZ. 2018-03-09T10:54:34.45 0.6 undecidable manual P 185 48.3183 50 -0.08 49
IV.MCIV.HHZ. 2018-03-09T10:54:33.37 0.3 undecidable manual P 103 41.5251 50 -0.1 74
TV.SF11.HHE. 2018-03-09T10:54:33.97 1.0 undecidable manual P 89 40.626 50 0.63 21
TV.SF04.EHZ. 2018-03-09T10:54:33.24 0.3 undecidable manual P 94 39.2274 50 0.12 74
TV.SF03.EHZ. 2018-03-09T10:54:33.93 1.0 undecidable manual P 99 41.7249 50 0.43 23
TV.SF13.HHE. 2018-03-09T10:54:32.46 0.1 undecidable manual P 98 36.1416 50 -0.18 97
IV.FROS.HHE. 2018-03-09T10:54:32.60 0.3 undecidable manual P 357 38.5281 50 -0.42 69
IV.CAFI.HHZ. 2018-03-09T10:54:32.77 3.0 undecidable manual P 0
IV.TRIF.HHZ. 2018-03-09T10:54:32.26 0.1 undecidable manual P 321 35.8419 50 -0.34 94
TV.SF14.HHE. 2018-03-09T10:54:32.44 0.6 undecidable manual P 108 37.3293 50 -0.39 46
TV.SF01.EHN. 2018-03-09T10:54:32.82 1.0 undecidable manual P 100 31.746 105 0.94 19
IV.ARCI.HHZ. 2018-03-09T10:54:30.42 0.6 undecidable manual P 93 24.0537 109 0 52
IV.CASP.HHZ. 2018-03-09T10:54:30.79 0.1 undecidable manual P 253 26.751 107 -0.14 100
IV.RIBO.EHZ.01 2018-03-09T10:54:28.98 0.3 undecidable manual P 312 14.4744 120 0.33 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CASP.HHE. ML:0.0 0.0001354927 0.3392 AML other m 2018-03-09T10:54:39.91
IV.CASP.HHN. ML:0.0 0.00013233629999999998 0.4352 AML other m 2018-03-09T10:54:36.69
IV.TRIF.HHE. ML:0.0 0.00019116345000000002 0.3072 AML other m 2018-03-09T10:54:39.66
TV.SF04.EHE. ML:0.0 0.00036433715 0.32 AML other m 2018-03-09T10:54:39.84
TV.SF04.EHN. ML:0.0 0.0002962377 0.2048 AML other m 2018-03-09T10:54:39.97
IV.TRIF.HHN. ML:0.0 0.00017819424999999999 0.256 AML other m 2018-03-09T10:54:40.52
IV.RIBO.EHE.01 ML:2.0 0.0009680766000000001 0.4416 AML other m 2018-03-09T10:54:33.68
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