Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.5 on date 19-01-2023 and time 00:29:36 (Italy) in region Malta [Sea]

A magnitude ML 3.5 earthquake occured in region: Malta [Sea], on

  • 18-01-2023 23:29:36 (UTC)
  • 19-01-2023 00:29:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 34.8860, 14.1340 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 3.5 2023-01-18
23:29:36		 34.8857 14.1335 10 2023-01-18
23:49:33		 Sala Sismica INGV-Roma 113669411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-18 23:29:36 ± 0.49
Latitude 34.8857 ± 0.0306
Longitude 14.1335 ± 0.0822
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113669411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 7720
Semi-minor axis of confidence ellipse (meter) 3000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 7720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 334
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 16
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) 2.53609
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 15
Magnitude information

ML:3.5

Field Value
Value 3.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 113669411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-18 23:49:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2023-01-18T23:31:56.56 3.0 undecidable manual Sg -0.07 0
IV.CDRU.HHZ. 2023-01-18T23:31:48.11 3.0 undecidable manual Sn -9.99 0
IV.MML1.EHZ. 2023-01-18T23:31:36.80 3.0 positive manual Pn -3.81 0
IV.SERS.HHZ. 2023-01-18T23:31:26.43 3.0 undecidable manual Sn -7.99 0
IV.PAOL.HHZ. 2023-01-18T23:31:21.72 3.0 negative manual Pg 11.07 0
IV.CMPR.HHZ. 2023-01-18T23:31:04.02 3.0 undecidable manual Pn 2.63 0
IV.HAGA.HHE. 2023-01-18T23:30:49.48 0.1 undecidable manual S 19 2.5361 38 0.14 89
IV.HCRL.HHE. 2023-01-18T23:30:48.16 0.1 undecidable manual S 17 2.5037 38 -0.41 85
IV.ACATE.EHE. 2023-01-18T23:30:40.54 0.1 undecidable manual S 8 2.1575 38 0.25 100
IV.MSFR.HHZ. 2023-01-18T23:30:29.78 3.0 positive manual Pg 0.21 0
IV.GIB.HHZ. 2023-01-18T23:30:29.13 3.0 negative manual Pn -0.39 0
IV.CSLB.HHZ. 2023-01-18T23:30:28.12 3.0 negative manual P -0.63 0
IV.GALF.HHZ. 2023-01-18T23:30:25.35 3.0 negative manual P 0.21 0
IV.AGST.EHZ. 2023-01-18T23:30:19.11 0.6 positive manual P 20 2.5289 38 0.49 41
IV.HLNI.HHZ. 2023-01-18T23:30:18.91 1.0 positive manual P 13 2.5325 38 0.23 22
IV.HCRL.HHE. 2023-01-18T23:30:18.24 3.0 undecidable manual P 17 2.5037 38 -0.03 0
IV.HAGA.HHE. 2023-01-18T23:30:18.69 1.0 undecidable manual P 19 2.5361 38 -0.03 23
IV.SSY.HHZ. 2023-01-18T23:30:17.80 0.6 negative manual P 18 2.3940 38 1.03 35
1J.FX01.HHE. 2023-01-18T23:30:16.69 1.0 undecidable manual P 23 2.3661 38 0.31 23
IV.HSRS.HHE. 2023-01-18T23:30:16.37 0.1 undecidable manual P 21 2.3751 38 -0.13 95
IV.HVZN.HHE. 2023-01-18T23:30:16.07 1.0 undecidable manual P 11 2.3391 38 0.07 24
IV.CLTA.HHE. 2023-01-18T23:30:15.53 0.6 undecidable manual P 357 2.2753 38 0.41 46
IV.RAFF.HHZ. 2023-01-18T23:30:15.42 1.0 negative manual P 4 2.3427 38 -0.63 21
IV.HAVL.HHE. 2023-01-18T23:30:15.59 1.0 undecidable manual P 21 2.2213 38 1.21 17
IV.ACATE.EHE. 2023-01-18T23:30:13.62 3.0 undecidable manual P 8 2.1575 38 0.12 0
IV.HMDC.HHE. 2023-01-18T23:30:12.53 0.1 undecidable manual P 14 2.1377 38 -0.69 89
IV.HVIT.HHE. 2023-01-18T23:30:12.49 1.0 undecidable manual P 8 2.1287 38 -0.61 23
IV.CROCE.HHE. 2023-01-18T23:30:10.61 1.0 undecidable manual P 9 1.9722 38 -0.33 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSY.HNN. ML:3.3 0.00034399999999999996 1.58 AML other m 2023-01-18T23:30:54.12
IV.SSY.HHE. ML:3.6 0.000733 0.42 AML other m 2023-01-18T23:31:05.14
IV.GIB.HHN. ML:3.6 0.000364 0.54 AML other m 2023-01-18T23:31:08.35
IV.SSY.HHN. ML:3.8 0.0010465 0.62 AML other m 2023-01-18T23:31:08.08
IV.SSY.HNE. ML:3.4 0.0003705 0.64 AML other m 2023-01-18T23:31:08.40
IV.GALF.HHN. ML:3.2 0.000195 0.44 AML other m 2023-01-18T23:31:10.24
IV.GIB.HHE. ML:3.5 0.00030199999999999997 0.64 AML other m 2023-01-18T23:31:12.60
IV.GALF.HHE. ML:3.3 0.00019849999999999997 0.52 AML other m 2023-01-18T23:31:26.12
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