Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.0 on date 09-04-2023 and time 07:08:57 (UTC) in region Malta [Sea]

A magnitude ML 3.0 earthquake occured in region: Malta [Sea], on

  • 09-04-2023 07:08:57 (UTC)
  • 09-04-2023 09:08:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.5770, 14.6600 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.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 3.0 2023-04-09
07:08:57		 34.5768 14.6598 10 2023-04-09
07:33:37		 Sala Sismica INGV-Roma 116198251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-09 07:08:57 ± 0.38
Latitude 34.5768 ± 0.0234
Longitude 14.6598 ± 0.0644
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116198251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5880
Semi-minor axis of confidence ellipse (meter) 2540
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 5880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 338
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 3.42372
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 18
Magnitude information

ML:3.0

Field Value
Value 3.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 116198251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-09 07:33:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2023-04-09T07:11:01.57 3.0 undecidable manual Sg 12.07 0
1J.FX14.HHZ.00 2023-04-09T07:10:21.30 3.0 undecidable manual Sg 0.46 0
IV.HSRS.HHE. 2023-04-09T07:10:11.01 0.6 undecidable manual S 10 283.605 38 0.34 61
IV.HAVL.HHE. 2023-04-09T07:10:07.64 0.3 undecidable manual S 9 267.5322 38 0.43 94
IV.HMDC.HHE. 2023-04-09T07:10:07.01 0.6 undecidable manual S 2 264.5352 38 0.46 63
IV.HVIT.HHZ. 2023-04-09T07:10:06.86 0.3 undecidable manual S 357 268.2315 38 -0.5 92
IV.CROCE.HHE. 2023-04-09T07:10:03.12 0.3 undecidable manual S 357 250.4604 38 -0.41 99
IV.AIO.HHZ. 2023-04-09T07:09:52.24 0.3 undecidable manual P 8 380.0307 38 0.38 62
IV.CSLB.HHZ. 2023-04-09T07:09:51.94 0.3 undecidable manual P 352 376.6341 38 0.5 62
IV.GALF.HHZ. 2023-04-09T07:09:48.66 0.6 undecidable manual P 359 347.7852 38 0.82 41
IV.CPTP.HHZ. 2023-04-09T07:09:44.01 0.3 undecidable manual P 352 317.1381 38 -0.03 87
IV.HLNI.HHZ. 2023-04-09T07:09:42.87 0.3 undecidable manual P 3 308.0583 38 -0.03 89
IV.HVZN.HHZ. 2023-04-09T07:09:42.54 3.0 undecidable manual P 0
IV.AGST.EHE. 2023-04-09T07:09:41.36 0.3 undecidable manual P 10 301.5759 38 -0.74 75
IV.HCRL.HHE. 2023-04-09T07:09:41.72 0.3 undecidable manual P 6 302.0643 38 -0.44 84
IV.RAFF.HHZ. 2023-04-09T07:09:41.19 0.3 undecidable manual P 355 294.6828 38 -0.05 93
IV.HAGA.HHE. 2023-04-09T07:09:41.94 0.3 undecidable manual P 8 303.6627 38 -0.42 84
IV.CLTA.HHE. 2023-04-09T07:09:41.25 0.3 undecidable manual P 348 293.0844 38 0.2 90
IV.SSY.HHE. 2023-04-09T07:09:40.52 0.3 undecidable manual P 7 288.6888 38 0.03 96
IV.HSRS.HHE. 2023-04-09T07:09:39.49 0.6 undecidable manual P 10 283.605 38 -0.37 60
IV.HVIT.HHZ. 2023-04-09T07:09:38.06 0.3 undecidable manual P 357 268.2315 38 0.11 100
IV.ACATE.HNZ. 2023-04-09T07:09:38.04 0.3 undecidable manual P 357 271.8279 38 -0.36 94
IV.HMDC.HHE. 2023-04-09T07:09:37.04 0.3 undecidable manual P 2 264.5352 38 -0.44 94
IV.HAVL.HHE. 2023-04-09T07:09:37.68 0.3 undecidable manual P 9 267.5322 38 -0.18 99
IV.CROCE.HHE. 2023-04-09T07:09:36.52 0.3 undecidable manual P 357 250.4604 38 0.78 87
IV.HPAC.HHE. 2023-04-09T07:09:34.97 0.3 undecidable manual P 8 238.8831 38 0.68 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHN. ML:2.6 0.0000275 0.48 AML other m 2023-04-09T07:09:54.67
IV.GALF.HHN. ML:3.4 0.000199 0.46 AML other m 2023-04-09T07:10:06.33
IV.AIO.HHN. ML:3.0 0.00006284999999999998 0.52 AML other m 2023-04-09T07:10:06.50
IV.GALF.HHE. ML:3.3 0.000183 0.5 AML other m 2023-04-09T07:10:09.44
IV.CSLB.HHE. ML:2.6 0.0000297 0.6 AML other m 2023-04-09T07:10:13.54
IV.AIO.HHE. ML:2.9 0.0000526 0.58 AML other m 2023-04-09T07:10:35.58
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