Earthquake with magnitude of ML 1.5 on date 02-01-2020 and time 17:02:32 (Italy) in region 1 km NW Monterotondo Marittimo (GR)

A magnitude ML 1.5 earthquake occured in region: 1 km NW Monterotondo Marittimo (GR), on

  • 02-01-2020 16:02:32 (UTC)
  • 02-01-2020 17:02:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.15, 10.85 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 1 1371 1371
Castelnuovo di Val di Cecina PI 8 2231 3602
Monteverdi Marittimo PI 11 758 4360
Massa Marittima GR 11 8375 12735
Montieri GR 14 1204 13939
Suvereto LI 16 3072 17011
Sassetta LI 17 514 17525
Pomarance PI 17 5897 23422
Chiusdino SI 19 1903 25325
Castagneto Carducci LI 20 9010 34335
Radicondoli SI 20 914 35249

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Siena (53903 inhabitants)
48 Km NW of Grosseto (82087 inhabitants)
63 Km SE of Livorno (159219 inhabitants)
73 Km SE of Pisa (89158 inhabitants)
73 Km SW of Scandicci (50609 inhabitants)
76 Km SW of Firenze (382808 inhabitants)
82 Km SE of Lucca (89046 inhabitants)
84 Km S of Prato (191150 inhabitants)
87 Km S of Pistoia (90315 inhabitants)
91 Km W of Arezzo (99543 inhabitants)
93 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 1.5 2020-01-02
16:02:32
43.15 10.85 8 2020-01-02
16:21:57
Sala Sismica INGV-Roma 75205651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-02 16:02:32 ± 0.21
Latitude 43.15 ± 0.01
Longitude 10.85 ± 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 75205651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1194
Semi-minor axis of confidence ellipse (meter) 778
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 40
Circular confidence region, given by single value of horizontal uncertainty (meter) 1190
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 9
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
Epicentral distance of station farthest from the epicenter (degree) 0.35883
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 75205651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-02 16:21:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.COLB.HHZ. 2020-01-02T16:04:18.63 3.0 undecidable manual Sg 8.08 0
IV.TDS.HHZ. 2020-01-02T16:04:11.25 3.0 undecidable manual Pg 15.96 0
MN.TRI.HHZ. 2020-01-02T16:04:04.42 3.0 undecidable manual Sn 1.41 0
IT.LRNO.HNZ. 2020-01-02T16:04:03.74 3.0 undecidable manual Sn -3.34 0
IV.CAR1.HHZ. 2020-01-02T16:03:52.45 3.0 undecidable manual Pn -5.86 0
IV.ZONE.HHZ. 2020-01-02T16:03:47.82 3.0 undecidable manual Sg 0.19 0
IV.MMO1.EHZ. 2020-01-02T16:03:44.88 3.0 undecidable manual Sg 14.57 0
IV.CGL.BHZ. 2020-01-02T16:03:36.42 3.0 undecidable manual Pg -0.36 0
IV.MNTV.HNZ. 2020-01-02T16:03:31.02 3.0 undecidable manual Sg -0.07 0
IV.PE3.EHZ. 2020-01-02T16:03:24.71 3.0 undecidable manual Sg 9 0
IV.ZONE.HHZ. 2020-01-02T16:03:16.13 3.0 undecidable manual Pg 1.27 0
IV.NARO.HHZ. 2020-01-02T16:03:16.24 3.0 undecidable manual Sn -0.34 0
IV.RMP.HHZ. 2020-01-02T16:03:09.73 3.0 positive manual Pg 2.12 0
IV.CASP.HHE. 2020-01-02T16:02:45.68 0.6 undecidable manual S 178 0.3588 50 -0.77 39
IV.FIR.HHZ. 2020-01-02T16:02:44.58 3.0 positive manual P -0.06 0
GU.CARD.HHZ. 2020-01-02T16:02:44.34 3.0 undecidable manual Pg -5.11 0
IV.RIBO.EHZ.01 2020-01-02T16:02:42.49 0.6 undecidable manual S 144 0.2464 106 -0.04 49
IV.FROS.CHZ. 2020-01-02T16:02:41.84 0.1 undecidable manual S 75 0.2311 107 -0.1 98
IV.CASP.HHE. 2020-01-02T16:02:40.85 0.6 undecidable manual P 178 0.3588 50 0.24 46
IV.MAGO.CHZ. 2020-01-02T16:02:40.24 0.1 undecidable manual S 311 0.1862 111 -0.09 99
IV.RIBO.EHZ.01 2020-01-02T16:02:39.23 0.3 undecidable manual P 144 0.2464 106 0.88 57
IV.FROS.CHZ. 2020-01-02T16:02:38.86 3.0 undecidable manual P 75 0.2311 107 0.85 0
IV.MAGO.CHZ. 2020-01-02T16:02:37.13 0.1 undecidable manual P 311 0.1862 111 0.05 100
IV.TRIF.CHZ. 2020-01-02T16:02:35.69 0.1 undecidable manual S 133 0.0522 144 -0.33 97
IV.TRIF.CHZ. 2020-01-02T16:02:34.75 0.1 undecidable manual P 133 0.0522 144 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHN. ML:1.4 0.0001775 0.1 AML other m 2020-01-02T16:02:40.45
IV.MAGO.CHE. ML:1.6 0.000265 0.1 AML other m 2020-01-02T16:02:40.68
IV.FROS.CHE. ML:1.5 0.0001955 0.68 AML other m 2020-01-02T16:02:42.07
IV.FROS.CHN. ML:1.7 0.000294 0.16 AML other m 2020-01-02T16:02:42.69
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