Earthquake with magnitude of ML 0.8 on date 05-03-2023 and time 08:16:53 (UTC) in region 3 km SE Sorano (GR)

A magnitude ML 0.8 earthquake occured in region: 3 km SE Sorano (GR), on

  • 05-03-2023 08:16:53 (UTC)
  • 05-03-2023 09:16:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6570, 11.7340 at 10 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
Sorano GR 3 3428 3428
Pitigliano GR 6 3818 7246
Onano VT 8 995 8241
Latera VT 9 836 9077
Gradoli VT 10 1353 10430
Grotte di Castro VT 11 2683 13113
Farnese VT 12 1527 14640
Valentano VT 12 2868 17508
Ischia di Castro VT 13 2326 19834
Castell'Azzara GR 13 1476 21310
Proceno VT 14 557 21867
San Lorenzo Nuovo VT 15 2091 23958
Acquapendente VT 15 5506 29464
Cellere VT 17 1188 30652
Piansano VT 17 2079 32731
Semproniano GR 18 1059 33790
Capodimonte VT 19 1731 35521
Manciano GR 19 7354 42875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of Viterbo (67173 inhabitants)
52 Km E of Grosseto (82087 inhabitants)
63 Km N of Civitavecchia (52991 inhabitants)
73 Km SW of Perugia (166134 inhabitants)
76 Km W of Terni (111501 inhabitants)
81 Km SE of Siena (53903 inhabitants)
86 Km W of Foligno (57155 inhabitants)
91 Km S of Arezzo (99543 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
Reviewed
Rev100
ML 0.8 2023-03-05
08:16:53
42.657 11.7338 10 2023-03-05
08:51:31
Sala Sismica INGV-Roma 115000661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-05 08:16:53 ± 0.24
Latitude 42.6570 ± 0.0180
Longitude 11.7338 ± 0.0318
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115000661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3148
Semi-minor axis of confidence ellipse (meter) 906
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 55
Circular confidence region, given by single value of horizontal uncertainty (meter) 3150.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.27160
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 115000661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-05 08:51:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARCI.HHZ. 2023-03-05T08:17:03.46 0.3 undecidable manual S 316 30.1476 50 -0.5 66
IV.ARCI.HHZ. 2023-03-05T08:17:00.09 0.3 undecidable manual P 316 30.1476 50 0.67 61
IV.MCIV.CHZ. 2023-03-05T08:16:59.29 0.1 undecidable manual S 341 14.2746 125 0 100
IV.SACS.HHZ. 2023-03-05T08:16:58.72 0.3 undecidable manual P 34 25.6521 50 -0.01 73
IV.LATE.HHZ. 2023-03-05T08:16:57.51 0.3 undecidable manual S 130 7.4814 143 -0.07 75
IV.MCIV.CHZ. 2023-03-05T08:16:56.76 0.1 undecidable manual P 341 14.2746 125 0.04 99
IV.LATE.HHZ. 2023-03-05T08:16:55.67 0.1 undecidable manual P 130 7.4814 143 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCIV.CHE. ML:0.6 0.00003695 0.26 AML other m 2023-03-05T08:16:59.28
IV.LATE.HHE. ML:0.9 0.000123 0.7 AML other m 2023-03-05T08:16:59.58
IV.MCIV.CHN. ML:0.5 0.0000289 0.44 AML other m 2023-03-05T08:16:59.38
IV.LATE.HHN. ML:1.2 0.00020598070000000003 0.5824 AML other m 2023-03-05T08:16:58.34
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download