Earthquake with magnitude of ML 1.2 on date 31-03-2023 and time 21:57:35 (UTC) in region 6 km SW Costacciaro (PG)

A magnitude ML 1.2 earthquake occured in region: 6 km SW Costacciaro (PG), on

  • 31-03-2023 21:57:35 (UTC)
  • 31-03-2023 23:57:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3250, 12.6640 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
Costacciaro PG 6 1216 1216
Sigillo PG 6 2404 3620
Gubbio PG 8 32216 35836
Fossato di Vico PG 9 2840 38676
Scheggia e Pascelupo PG 9 1393 40069
Gualdo Tadino PG 14 15208 55277
Cantiano PU 17 2245 57522
Valfabbrica PG 19 3389 60911
Fabriano AN 20 31480 92391

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Perugia (166134 inhabitants)
41 Km N of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
65 Km E of Arezzo (99543 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
76 Km W of Ancona (100861 inhabitants)
82 Km S of Rimini (147750 inhabitants)
85 Km N of Terni (111501 inhabitants)
97 Km SE of Cesena (96758 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 1.2 2023-03-31
21:57:35
43.3247 12.6638 10 2023-03-31
22:02:04
Sala Sismica INGV-Roma 115927971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-31 21:57:35 ± 0.06
Latitude 43.3247 ± 0.0036
Longitude 12.6638 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115927971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 347
Semi-minor axis of confidence ellipse (meter) 314
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 157
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29228
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 115927971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-31 22:02:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2023-03-31T21:58:00.63 3.0 undecidable manual S -0.16 0
IV.ARVD.HHZ. 2023-03-31T21:57:45.94 0.6 undecidable manual S 49 29.5482 50 0.16 48
IV.PIEI.HHZ. 2023-03-31T21:57:44.44 0.6 undecidable manual S 336 25.5522 50 -0.3 47
IV.ATPI.EHZ. 2023-03-31T21:57:44.83 0.6 undecidable manual S 304 25.2525 50 0.17 48
IV.SNTG.HHZ. 2023-03-31T21:57:43.81 0.6 undecidable manual S 109 23.6541 113 -0.4 46
IV.ATVO.HHZ. 2023-03-31T21:57:43.02 0.6 undecidable manual S 287 21.6672 115 -0.57 44
IV.FRON.EHZ. 2023-03-31T21:57:43.59 0.6 undecidable manual S 13 21.9669 115 -0.09 49
IV.ARVD.HHZ. 2023-03-31T21:57:41.37 0.6 positive manual P 49 29.5482 50 0.03 49
IV.SSFR.HHZ. 2023-03-31T21:57:41.95 0.6 undecidable manual S 38 15.6732 123 0.2 49
IV.NARO.HHZ. 2023-03-31T21:57:41.50 1.0 undecidable manual P 348 32.4453 50 -0.29 23
IV.MURB.HHZ. 2023-03-31T21:57:41.21 0.6 undecidable manual S 239 13.1757 128 0.15 49
IV.ATCC.EHZ. 2023-03-31T21:57:41.72 0.6 undecidable manual S 187 15.5733 123 -0.03 50
IV.ATVO.HHZ. 2023-03-31T21:57:40.08 0.6 undecidable manual P 287 21.6672 115 0 50
IV.FRON.EHZ. 2023-03-31T21:57:40.23 0.6 undecidable manual P 13 21.9669 115 0.1 49
IV.PIEI.HHZ. 2023-03-31T21:57:40.66 0.6 positive manual P 336 25.5522 50 -0.08 49
IV.ATPI.EHZ. 2023-03-31T21:57:40.82 1.0 negative manual P 304 25.2525 50 0.13 24
IV.ATCC.EHZ. 2023-03-31T21:57:39.06 0.1 positive manual P 187 15.5733 123 0.05 100
IV.FOSV.EHZ. 2023-03-31T21:57:39.81 0.6 undecidable manual S 113 8.4804 140 -0.09 50
IV.SSFR.HHZ. 2023-03-31T21:57:39.21 0.1 undecidable manual P 38 15.6732 123 0.2 97
IV.SNTG.HHZ. 2023-03-31T21:57:39.95 1.0 undecidable manual P 109 23.6541 113 -0.48 23
IV.MURB.HHZ. 2023-03-31T21:57:38.80 0.1 undecidable manual P 239 13.1757 128 0.19 98
IV.FOSV.EHZ. 2023-03-31T21:57:37.95 1.0 undecidable manual P 113 8.4804 140 0.01 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHN. ML:0.8 0.00008965000000000001 0.14 AML other m 2023-03-31T21:57:39.99
IV.FOSV.EHE. ML:0.9 0.00011219999999999999 0.08 AML other m 2023-03-31T21:57:40.08
IV.MURB.HHN. ML:1.3 0.000227 0.32 AML other m 2023-03-31T21:57:41.62
IV.MURB.HHE. ML:1.2 0.0001855 0.58 AML other m 2023-03-31T21:57:41.74
IV.ATCC.EHE. ML:1.2 0.000155 1.56 AML other m 2023-03-31T21:57:41.18
IV.ATCC.EHN. ML:1.2 0.000141 1.72 AML other m 2023-03-31T21:57:42.88
IV.SSFR.HHN. ML:1.6 0.0003735000000000001 0.72 AML other m 2023-03-31T21:57:42.13
IV.SSFR.HNN. ML:1.7 0.00047 0.74 AML other m 2023-03-31T21:57:42.13
IV.SSFR.HHE. ML:1.6 0.00034750000000000004 0.18 AML other m 2023-03-31T21:57:42.22
IV.SSFR.HNE. ML:1.6 0.000367 0.58 AML other m 2023-03-31T21:57:42.44
IV.SNTG.HHN. ML:0.8 0.0000401 1.82 AML other m 2023-03-31T21:57:43.05
IV.SNTG.HHE. ML:0.8 0.0000412 0.7 AML other m 2023-03-31T21:57:44.58
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