Earthquake (quarry blast) with magnitude of ML 1.8 on date 10-05-2023 and time 12:12:55 (Italy) in region 5 km E Escalaplano (CA)

A magnitude ML 1.8 (quarry blast) earthquake occured in region: 5 km E Escalaplano (CA), on

  • 10-05-2023 10:12:55 (UTC)
  • 10-05-2023 12:12:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.6320, 9.4160 at 10 km depth.

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

Event type: quarry blast.

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
Escalaplano CA 5 2201 2201
Perdasdefogu OG 6 1957 4158
Ballao CA 10 831 4989
Goni CA 13 492 5481
Armungia CA 13 481 5962
Villasalto CA 16 1062 7024
Orroli CA 16 2298 9322
Tertenia OG 16 3888 13210
Silius CA 16 1202 14412
San Nicolò Gerrei CA 18 788 15200
Nurri CA 18 2184 17384
Esterzili CA 20 668 18052
Jerzu OG 20 3159 21211
Ussassai OG 20 575 21786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Quartu Sant'Elena (71125 inhabitants)
53 Km NE of Cagliari (154460 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 1.8 2023-05-10
10:12:55
39.6325 9.4158 10 2023-05-10
10:23:04
Sala Sismica INGV-Roma 117213971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-10 10:12:55 ± 0.14
Latitude 39.6325 ± 0.0072
Longitude 9.4158 ± 0.0304
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type quarry blast
Origin ID 117213971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2641
Semi-minor axis of confidence ellipse (meter) 504
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 104
Circular confidence region, given by single value of horizontal uncertainty (meter) 2640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.13939
Epicentral distance of station farthest from the epicenter (degree) 1.50457
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 117213971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-10 10:23:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGLI.HHE. 2023-05-10T10:13:42.33 0.6 undecidable manual S 353 167.0106 50 0.09 35
IV.BULT.EHZ. 2023-05-10T10:13:24.38 0.6 undecidable manual S 342 102.3198 50 -0.59 37
IV.AGLI.HHE. 2023-05-10T10:13:22.61 0.1 undecidable manual P 353 167.0106 50 0.32 67
MN.SENA.HHZ. 2023-05-10T10:13:21.31 0.3 undecidable manual S 2 90.1431 50 -0.4 60
IV.DGI.HHZ. 2023-05-10T10:13:18.37 0.6 undecidable manual S 12 77.7666 50 -0.03 44
TV.SU26.HHE. 2023-05-10T10:13:12.02 0.1 undecidable manual P 235 97.4247 50 0.46 78
IV.BULT.EHZ. 2023-05-10T10:13:12.08 0.6 undecidable manual P 342 102.3198 50 -0.25 41
MN.SENA.HHZ. 2023-05-10T10:13:10.54 0.1 undecidable manual P 2 90.1431 50 0.1 86
IV.DGI.HHZ. 2023-05-10T10:13:08.80 0.1 positive manual P 12 77.7666 50 0.27 85
IV.CGL.HHE. 2023-05-10T10:13:05.77 0.6 undecidable manual S 199 31.2465 50 -0.23 46
IV.CGL.HHE. 2023-05-10T10:13:01.30 0.1 undecidable manual P 199 31.2465 50 -0.07 96
MN.VSL.HHE. 2023-05-10T10:13:01.19 0.6 undecidable manual S 192 15.4734 124 -0.32 47
MN.VSL.HHE. 2023-05-10T10:12:58.77 0.1 undecidable manual P 192 15.4734 124 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.SENA.HHE. ML:1.6 0.000049879414999999997 0.1984 AML other m 2023-05-10T10:13:27.10
IV.DGI.HHE. ML:1.6 0.00006135 0.48 AML other m 2023-05-10T10:13:20.43
IV.DGI.HHN. ML:1.7 0.00007350000000000001 1.24 AML other m 2023-05-10T10:13:23.69
MN.SENA.HHN. ML:1.8 0.0000673 0.36 AML other m 2023-05-10T10:13:25.27
IV.BULT.EHE. ML:2.0 0.00008410000000000001 0.46 AML other m 2023-05-10T10:13:26.69
IV.BULT.EHN. ML:2.0 0.0000838 0.56 AML other m 2023-05-10T10:13:26.48
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