Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.7 on date 23-03-2023 and time 12:58:54 (UTC) in region Malta [Sea]

A magnitude ML 3.7 earthquake occured in region: Malta [Sea], on

  • 23-03-2023 12:58:54 (UTC)
  • 23-03-2023 13:58:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 34.9080, 14.0790 at 10 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.

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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
Bulletin
Rev1000 		ML 3.7 2023-03-23
12:58:54		 34.9083 14.0793 10 2024-03-01
17:18:02		 Bollettino Sismico Italiano INGV 116086621
Reviewed
Rev100 		ML 3.6 2023-03-23
12:58:57		 35.1108 14.0245 10 2023-03-23
13:17:37		 Sala Sismica INGV-Roma 115665971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-23 12:58:54 ± 0.4
Latitude 34.9083 ± 0.0261
Longitude 14.0793 ± 0.0285
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116086621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3510
Semi-minor axis of confidence ellipse (meter) 1720
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 3510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 271
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.99645
Epicentral distance of station farthest from the epicenter (degree) 4.62072
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:3.7

Field Value
Value 3.7
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 116086621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-22 13:29:24

ML:3.6

Field Value
Value 3.6
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 115665971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-23 13:17:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SERS.HHZ. 2023-03-23T13:00:05.31 0.3 undecidable manual P 26 512.8977 38 -0.14 18
IV.RAFF.HHZ. 2023-03-23T13:00:01.93 0.3 undecidable manual S 6 257.9418 38 -0.26 34
IV.CLTA.HHZ. 2023-03-23T12:59:59.94 1.0 undecidable manual S 358 249.7611 38 -0.48 12
IV.HMDC.HHZ. 2023-03-23T12:59:58.46 0.6 undecidable manual S 15 236.0859 38 0.99 21
IV.PLAC.HHZ. 2023-03-23T12:59:56.78 0.3 undecidable manual P 27 445.3209 38 -0.25 19
IV.HPAC.HHZ. 2023-03-23T12:59:55.55 0.6 undecidable manual S 23 217.5156 38 2.09 12
IV.MSRU.HHZ. 2023-03-23T12:59:50.90 0.3 undecidable manual P 18 393.4062 38 0.33 20
IV.SOI.EHZ. 2023-03-23T12:59:50.18 0.3 undecidable manual P 26 392.8068 38 -0.31 20
IV.IVPL.HHZ. 2023-03-23T12:59:50.52 0.3 undecidable manual P 11 392.9067 38 0 21
IV.MUCR.HHZ. 2023-03-23T12:59:46.37 0.3 undecidable manual P 11 354.8781 38 0.6 19
IV.MSFR.HHZ. 2023-03-23T12:59:46.18 0.1 undecidable manual P 7 349.6833 38 1.05 21
IV.AIO.HHZ. 2023-03-23T12:59:46.17 0.3 undecidable manual P 17 354.978 38 0.38 20
IV.SOLUN.HHZ. 2023-03-23T12:59:45.73 0.1 undecidable manual P 352 356.4765 38 -0.25 28
IV.EPZF.HHZ. 2023-03-23T12:59:44.24 0.3 undecidable manual P 12 330.8244 38 1.46 13
IV.CIMI.HHZ. 2023-03-23T12:59:43.49 0.1 undecidable manual P 352 332.9112 38 0.45 27
IV.CSLB.HHZ. 2023-03-23T12:59:43.78 0.3 undecidable manual P 360 336.0081 38 0.35 21
IV.CORL.HHZ. 2023-03-23T12:59:43.56 0.3 undecidable manual P 348 338.4057 38 -0.17 21
IV.ALJA.HHZ. 2023-03-23T12:59:41.85 0.3 undecidable manual P 355 316.4499 38 0.86 18
IV.GALF.HHZ. 2023-03-23T12:59:41.31 0.3 undecidable manual P 8 313.8525 38 0.63 19
IV.CPTP.HHZ. 2023-03-23T12:59:37.02 0.3 undecidable manual P 2 277.3113 38 0.89 23
IV.SSY.HHZ. 2023-03-23T12:59:34.83 0.3 undecidable manual P 19 264.9348 38 0.24 32
IV.CLTA.HHZ. 2023-03-23T12:59:32.26 0.1 undecidable manual P 358 249.7611 38 -0.44 47
IV.RAFF.HHZ. 2023-03-23T12:59:32.91 0.3 undecidable manual P 6 257.9418 38 -0.81 29
IV.HAVL.HHZ. 2023-03-23T12:59:31.42 0.3 undecidable manual P 22 246.0648 38 -0.81 31
IV.HMDC.HHZ. 2023-03-23T12:59:30.30 0.1 undecidable manual P 15 236.0859 38 -0.69 47
IV.HPAC.HHZ. 2023-03-23T12:59:29.53 0.1 undecidable manual P 23 217.5156 38 0.85 50
IV.HVIT.HHZ. 2023-03-23T12:59:29.76 0.3 undecidable manual P 10 234.5874 38 -1.04 31
ML.MSDA.BHE. 2023-03-23T12:59:28.23 0.6 undecidable manual S 18 115.995 50 -0.27 47
MN.WDD.HHZ. 2023-03-23T12:59:27.08 0.3 undecidable manual S 21 110.6004 50 0.03 75
IV.CROCE.HHE. 2023-03-23T12:59:27.39 0.3 undecidable manual P 11 217.3158 38 -1.27 31
IV.LPDG.HHE. 2023-03-23T12:59:19.52 0.6 undecidable manual P 298 147.741 50 0.37 43
IV.LINA.HHE. 2023-03-23T12:59:19.76 0.6 undecidable manual P 315 153.3354 50 -0.25 43
ML.MSDA.BHE. 2023-03-23T12:59:14.14 0.1 undecidable manual P 18 115.995 50 -0.12 97
MN.WDD.HHZ. 2023-03-23T12:59:13.41 0.1 positive manual P 21 110.6004 50 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.WDD.HHN. ML:3.8 0.00637 0.56 AML other m 2023-03-23T12:59:31.80
MN.WDD.HHE. ML:3.8 0.0064399999999999995 1.56 AML other m 2023-03-23T12:59:32.06
IV.HMDC.HNE. ML:4.0 0.002155 0.62 AML other m 2023-03-23T13:00:08.51
IV.HPAC.HHN. ML:3.9 0.002095 0.72 AML other m 2023-03-23T13:00:11.92
IV.CPTP.HHN. ML:3.8 0.0010400000000000001 1.24 AML other m 2023-03-23T13:00:12.32
IV.HAVL.HHN. ML:4.1 0.002205 0.7 AML other m 2023-03-23T13:00:13.33
IV.HAVL.HHE. ML:3.9 0.0016749999999999998 0.62 AML other m 2023-03-23T13:00:13.67
IV.HMDC.HHE. ML:3.4 0.0005335 0.42 AML other m 2023-03-23T13:00:14.10
IV.RAFF.HHN. ML:3.3 0.00035099999999999997 1.44 AML other m 2023-03-23T13:00:15.92
IV.HMDC.HHN. ML:4.1 0.0025700000000000002 0.9 AML other m 2023-03-23T13:00:16.45
IV.HMDC.HNN. ML:4.1 0.002615 0.9 AML other m 2023-03-23T13:00:16.46
IV.SSY.HHE. ML:4.1 0.0021900000000000005 0.54 AML other m 2023-03-23T13:00:18.02
IV.HPAC.HHE. ML:3.8 0.00175 1.38 AML other m 2023-03-23T13:00:18.94
IV.RAFF.HHE. ML:3.2 0.00026450000000000003 0.52 AML other m 2023-03-23T13:00:19.65
IV.CSLB.HHE. ML:3.4 0.00026000000000000003 1.04 AML other m 2023-03-23T13:00:21.59
IV.SSY.HNE. ML:3.6 0.0006969999999999999 0.56 AML other m 2023-03-23T13:00:24.35
IV.CLTA.HHE. ML:3.4 0.0005185 0.96 AML other m 2023-03-23T13:00:24.22
IV.SSY.HNN. ML:3.5 0.00054 1.14 AML other m 2023-03-23T13:00:24.72
IV.CLTA.HHN. ML:3.4 0.000481 0.66 AML other m 2023-03-23T13:00:25.33
IV.SSY.HHN. ML:4.3 0.0031349999999999998 1.6 AML other m 2023-03-23T13:00:25.83
IV.SOLUN.HHN. ML:3.6 0.0003395 1.3 AML other m 2023-03-23T13:00:28.78
IV.CORL.HHE. ML:3.6 0.0003345 0.52 AML other m 2023-03-23T13:00:29.31
IV.CORL.HNE. ML:3.6 0.00034100000000000005 0.52 AML other m 2023-03-23T13:00:29.31
IV.SOLUN.HHE. ML:3.7 0.000377 0.52 AML other m 2023-03-23T13:00:33.31
IV.GALF.HHN. ML:3.5 0.0003375 0.48 AML other m 2023-03-23T13:00:33.16
IV.GALF.HNN. ML:3.9 0.0009270000000000001 0.5 AML other m 2023-03-23T13:00:33.16
IV.CIMI.HHE. ML:3.7 0.0004735 1.32 AML other m 2023-03-23T13:00:35.19
IV.CIMI.HNN. ML:3.8 0.0005880000000000001 0.78 AML other m 2023-03-23T13:00:36.03
IV.CIMI.HHN. ML:3.8 0.000558 0.74 AML other m 2023-03-23T13:00:36.05
IV.CORL.HNN. ML:3.6 0.0003835 0.82 AML other m 2023-03-23T13:00:36.60
IV.CORL.HHN. ML:3.6 0.0003855 0.84 AML other m 2023-03-23T13:00:36.61
IV.CSLB.HHN. ML:3.4 0.000246 0.56 AML other m 2023-03-23T13:00:40.35
IV.EPZF.HHE. ML:4.0 0.0008985 1.58 AML other m 2023-03-23T13:00:43.99
IV.GALF.HHE. ML:3.5 0.00032299999999999994 0.56 AML other m 2023-03-23T13:00:43.37
IV.CPTP.HHE. ML:3.8 0.00095 0.84 AML other m 2023-03-23T13:00:45.16
IV.GALF.HNE. ML:3.9 0.0008605 0.64 AML other m 2023-03-23T13:00:53.09
IV.CIMI.HNE. ML:3.8 0.00055213515 0.7104 AML other m 2023-03-23T13:00:53.98
IV.EPZF.HHN. ML:3.9 0.0008810000000000001 1.2 AML other m 2023-03-23T13:00:55.22
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
Waveforms Seismic signals in miniseed + resp format Download