Earthquake with magnitude of ML 1.2 on date 17-03-2020 and time 22:19:17 (Italy) in region 2 km SE Monterotondo Marittimo (GR)

A magnitude ML 1.2 earthquake occured in region: 2 km SE Monterotondo Marittimo (GR), on

  • 17-03-2020 21:19:17 (UTC)
  • 17-03-2020 22:19:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.14, 10.87 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Monterotondo Marittimo GR 2 1371 1371
Castelnuovo di Val di Cecina PI 9 2231 3602
Massa Marittima GR 10 8375 11977
Montieri GR 12 1204 13181
Monteverdi Marittimo PI 13 758 13939
Suvereto LI 17 3072 17011
Chiusdino SI 18 1903 18914
Sassetta LI 18 514 19428
Pomarance PI 18 5897 25325
Radicondoli SI 20 914 26239

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Siena (53903 inhabitants)
46 Km NW of Grosseto (82087 inhabitants)
65 Km SE of Livorno (159219 inhabitants)
74 Km SW of Scandicci (50609 inhabitants)
75 Km SE of Pisa (89158 inhabitants)
77 Km SW of Firenze (382808 inhabitants)
84 Km SE of Lucca (89046 inhabitants)
85 Km S of Prato (191150 inhabitants)
89 Km S of Pistoia (90315 inhabitants)
90 Km W of Arezzo (99543 inhabitants)
96 Km SE of Viareggio (62467 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 100 ML 1.2 2020-03-17
21:19:17
43.14 10.87 8 2020-03-17
21:29:49
Sala Sismica INGV-Roma 77332771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-17 21:19:17 ± 0.14
Latitude 43.14 ± 0.01
Longitude 10.87 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77332771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 966
Semi-minor axis of confidence ellipse (meter) 702
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.68888
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 17
Type of magnitude ML
Reference to an origin 77332771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-17 21:29:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2020-03-17T21:20:02.53 3.0 undecidable manual S 0.05 0
IV.MAON.HHZ. 2020-03-17T21:19:42.26 3.0 undecidable manual S 0
IV.CELB.HHZ. 2020-03-17T21:19:39.01 3.0 undecidable manual S 0
IV.ARCI.HHZ. 2020-03-17T21:19:35.30 3.0 undecidable manual S 122 0.5252 50 -0.97 0
IV.OSSC.HHZ. 2020-03-17T21:19:34.16 0.3 undecidable manual S 35 0.4739 50 -0.59 62
IV.MAON.HHZ. 2020-03-17T21:19:33.09 3.0 undecidable manual P 0
TV.SF14.HHE. 2020-03-17T21:19:31.21 0.3 undecidable manual P 125 0.6646 50 0.45 63
IV.SF04.EHZ. 2020-03-17T21:19:31.02 3.0 undecidable manual P 0
IV.MCIV.CHE. 2020-03-17T21:19:31.66 0.3 undecidable manual P 121 0.6889 50 0.47 62
IV.CASP.HHZ. 2020-03-17T21:19:30.13 0.3 undecidable manual S 181 0.3453 50 -0.79 59
TV.SF13.HHE. 2020-03-17T21:19:30.68 0.3 undecidable manual P 120 0.6331 50 0.45 63
IV.CELB.HHZ. 2020-03-17T21:19:30.85 3.0 undecidable manual P 0
IV.ARCI.HHZ. 2020-03-17T21:19:28.60 0.6 undecidable manual P 122 0.5252 50 0.22 45
IV.OSSC.HHZ. 2020-03-17T21:19:27.64 0.3 undecidable manual P 35 0.4739 50 0.14 70
IV.CSNT.HHZ. 2020-03-17T21:19:27.39 3.0 undecidable manual P 0
IV.RIBO.EHZ.01 2020-03-17T21:19:26.31 0.3 undecidable manual S 145 0.2266 108 -0.5 68
IV.FROS.CHZ. 2020-03-17T21:19:26.22 0.3 undecidable manual S 70 0.2212 109 -0.38 70
IV.MAGO.CHZ. 2020-03-17T21:19:25.70 0.3 undecidable manual S 312 0.2068 110 -0.38 70
IV.CASP.HHZ. 2020-03-17T21:19:25.16 0.6 undecidable manual P 181 0.3453 50 -0.14 48
IV.RIBO.EHZ.01 2020-03-17T21:19:23.11 0.1 undecidable manual P 145 0.2266 108 0.19 96
IV.FROS.CHZ. 2020-03-17T21:19:22.90 0.3 undecidable manual P 70 0.2212 109 0.1 74
IV.MAGO.CHZ. 2020-03-17T21:19:22.88 0.3 undecidable manual P 312 0.2068 110 0.38 70
IV.TRIF.CHE. 2020-03-17T21:19:20.54 0.1 undecidable manual S 132 0.0315 157 -0.19 100
IV.TRIF.CHE. 2020-03-17T21:19:19.77 0.1 undecidable manual P 132 0.0315 157 0.36 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHE. ML:1.1 8.128982E-5 0.1408 AML other m 2020-03-17T21:19:26.09
IV.MAGO.CHN. ML:1.1 8.143739E-5 0.0896 AML other m 2020-03-17T21:19:26.04
IV.FROS.CHE. ML:0.8 3.3100525E-5 0.1024 AML other m 2020-03-17T21:19:26.68
IV.FROS.CHN. ML:0.9 4.817603E-5 0.1024 AML other m 2020-03-17T21:19:27.03
IV.RIBO.EHE.01 ML:1.2 9.7981075E-5 0.192 AML other m 2020-03-17T21:19:28.49
IV.ARCI.HHN. ML:0.8 1.601543E-5 0.2048 AML other m 2020-03-17T21:19:35.49
IV.ARCI.HNE. ML:1.8 0.000125516615 0.7552 AML other m 2020-03-17T21:19:34.20
IV.ARCI.HNN. ML:1.8 0.00014935365 0.7424 AML other m 2020-03-17T21:19:48.28
IV.ARCI.HHE. ML:0.8 1.448062E-5 0.2048 AML other m 2020-03-17T21:19:36.26
IV.CELB.HHN. ML:1.1 1.963318E-5 0.1024 AML other m 2020-03-17T21:19:39.97
IV.CELB.HHE. ML:1.2 3.069098E-5 0.0512 AML other m 2020-03-17T21:19:40.04
TV.SF04.EHE. ML:1.3 3.460076E-5 0.2176 AML other m 2020-03-17T21:19:31.80
TV.SF04.EHN. ML:1.3 2.98953725E-5 0.1792 AML other m 2020-03-17T21:19:31.80
IV.MAON.HNN. ML:2 0.00014820935 0.7552 AML other m 2020-03-17T21:19:57.73
IV.MAON.HHE. ML:0.9 1.243113E-5 0.2048 AML other m 2020-03-17T21:19:46.38
IV.MAON.HHN. ML:1.2 1.870464E-5 0.2048 AML other m 2020-03-17T21:19:43.61
IV.MAON.HNE. ML:2.1 0.0001672236 1.0496 AML other m 2020-03-17T21:19:32.56
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