Earthquake with magnitude of ML 1.8 on date 04-04-2019 and time 10:13:33 (UTC) in region 5 km N Escalaplano (CA)

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

  • 04-04-2019 10:13:33 (UTC)
  • 04-04-2019 12:13:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.67, 9.34 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Orroli CA 8 2298 4499
Perdasdefogu OG 9 1957 6456
Nurri CA 11 2184 8640
Goni CA 11 492 9132
Esterzili CA 13 668 9800
Ballao CA 14 831 10631
Siurgus Donigala CA 16 2028 12659
Villanova Tulo CA 16 1108 13767
Ussassai OG 16 575 14342
Armungia CA 17 481 14823
Serri CA 17 660 15483
Sadali CA 17 971 16454
Silius CA 17 1202 17656
Mandas CA 18 2201 19857
Escolca CA 19 594 20451
Seui OG 19 1310 21761
San Basilio CA 19 1251 23012
San Nicolò Gerrei CA 20 788 23800
Villasalto CA 20 1062 24862

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km N of Quartu Sant'Elena (71125 inhabitants)
54 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
Rev 1000 ML 1.8 2019-04-04
10:13:33
39.67 9.34 1 2019-08-22
08:24:55
Bollettino Sismico Italiano INGV 67256781
Rev 100 ML 1.7 2019-04-04
10:13:33
39.58 9.54 10 2019-04-04
10:20:31
Sala Sismica INGV-Roma 67244271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-04 10:13:33 ± 0.17
Latitude 39.67 ± 0.01
Longitude 9.34 ± 0.03
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67256781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2940
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 2940
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.17627
Epicentral distance of station farthest from the epicenter (degree) 1.4614
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 67256781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-02 10:09:05

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 67244271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-04 10:20:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2019-04-04T10:14:01.58 0.3 undecidable manual P 355 1.4614 50 0.39 53
TV.SU26.HHZ. 2019-04-04T10:13:50.80 0.3 undecidable manual P 231 0.8553 50 -0.02 68
IV.DGI.HHZ. 2019-04-04T10:13:47.56 0.1 undecidable manual P 17 0.6781 50 -0.23 90
IV.CGL.BHZ. 2019-04-04T10:13:40.04 0.1 positive manual P 187 0.3067 91 -0.19 98
MN.VSL.HHZ. 2019-04-04T10:13:37.54 0.1 positive manual P 171 0.1763 91 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.VSL.HHN. ML:1.6 0.00032030775 0.16 AML other m 2019-04-04T10:13:40.59
MN.VSL.HHE. ML:1.6 0.0003684677 0.1408 AML other m 2019-04-04T10:13:40.86
IV.CGL.BHE. ML:1.8 0.0002604173 0.2432 AML other m 2019-04-04T10:13:45.03
IV.CGL.BHN. ML:1.8 0.0002908998 0.2432 AML other m 2019-04-04T10:13:46.25
TV.SU26.HHN. ML:1.9 9.3839085E-5 0.2752 AML other m 2019-04-04T10:14:05.92
TV.SU26.HHE. ML:1.9 8.6881735E-5 0.7872 AML other m 2019-04-04T10:14:06.74
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