Earthquake (explosion) with magnitude of ML 1.6 on date 19-07-2023 and time 07:48:07 (UTC) in region 3 km E Escalaplano (CA)

A magnitude ML 1.6 (explosion) earthquake occured in region: 3 km E Escalaplano (CA), on

  • 19-07-2023 07:48:07 (UTC)
  • 19-07-2023 09:48:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.6340, 9.3890 at 10 km depth.

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

Event type: explosion.

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 3 2201 2201
Perdasdefogu OG 7 1957 4158
Ballao CA 10 831 4989
Goni CA 11 492 5481
Armungia CA 12 481 5962
Orroli CA 14 2298 8260
Silius CA 15 1202 9462
Villasalto CA 16 1062 10524
Nurri CA 16 2184 12708
San Nicolò Gerrei CA 17 788 13496
Tertenia OG 18 3888 17384
Siurgus Donigala CA 18 2028 19412
Esterzili CA 19 668 20080
San Basilio CA 19 1251 21331
Ussassai OG 20 575 21906

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Quartu Sant'Elena (71125 inhabitants)
52 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 1.6 2023-07-19
07:48:07
39.6338 9.3888 10 2023-07-19
08:08:17
Sala Sismica INGV-Roma 119390701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-19 07:48:07 ± 0.14
Latitude 39.6338 ± 0.0045
Longitude 9.3888 ± 0.0304
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type explosion
Origin ID 119390701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2650
Semi-minor axis of confidence ellipse (meter) 490
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 2650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.13760
Epicentral distance of station farthest from the epicenter (degree) 1.50097
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 119390701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-19 08:08:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BULT.EHE. 2023-07-19T07:48:37.12 0.6 undecidable manual S 343 101.5206 50 -0.25 41
IV.AGLI.HHE. 2023-07-19T07:48:35.28 0.1 undecidable manual P 354 166.611 50 0.48 65
TV.SU26.HHZ. 2023-07-19T07:48:24.12 0.6 undecidable manual P 234 95.6376 50 0.26 41
IV.BULT.EHE. 2023-07-19T07:48:24.55 0.1 undecidable manual P 343 101.5206 50 -0.22 82
MN.SENA.HHZ. 2023-07-19T07:48:23.02 0.6 undecidable manual P 4 90.1431 50 0.01 44
IV.CGL.HHZ. 2023-07-19T07:48:18.58 0.6 undecidable manual S 195 30.747 50 0.11 48
IV.CGL.HHZ. 2023-07-19T07:48:13.70 0.1 undecidable manual P 195 30.747 50 -0.16 95
MN.VSL.HHZ. 2023-07-19T07:48:13.93 0.6 undecidable manual S 183 15.2736 123 0.03 50
MN.VSL.HHZ. 2023-07-19T07:48:11.17 0.1 positive manual P 183 15.2736 123 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.VSL.HHE. ML:1.7 0.00043500000000000006 0.14 AML other m 2023-07-19T07:48:14.24
MN.VSL.HHN. ML:1.5 0.000292999 0.3008 AML other m 2023-07-19T07:48:14.26
IV.CGL.HHE. ML:1.6 0.00017299999999999998 0.24 AML other m 2023-07-19T07:48:18.73
IV.CGL.HHN. ML:1.5 0.0001475 0.3 AML other m 2023-07-19T07:48:18.74
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