Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.7 on date 16-03-2023 and time 16:50:49 (Italy) in region Malta [Sea]

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

  • 16-03-2023 15:50:49 (UTC)
  • 16-03-2023 16:50:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 34.8350, 14.1440 at 15 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 2023-03-16
15:50:49		 34.8353 14.1435 15 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124131771
Reviewed
Rev100 		ML 3.6 2023-03-16
15:50:50		 35.0832 13.6737 10 2023-03-16
16:22:57		 Sala Sismica INGV-Roma 115443101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-16 15:50:49 ± 0.56
Latitude 34.8353 ± 0.0324
Longitude 14.1435 ± 0.0460
Depth (km) 15 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124131771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5260
Semi-minor axis of confidence ellipse (meter) 707
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 310
Circular confidence region, given by single value of horizontal uncertainty (meter) 5260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 278
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
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) 1.04861
Epicentral distance of station farthest from the epicenter (degree) 3.59729
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:3.6

Field Value
Value 3.6
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 115443101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-16 16:22:57

ML:3.7

Field Value
Value 3.7
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 124131771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-18 17:53:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2023-03-16T15:51:56.00 0.6 undecidable manual S 20 251.5593 54 1.17 23
IV.HMDC.HHZ. 2023-03-16T15:51:53.98 0.6 undecidable manual S 14 242.4795 54 1.1 26
IV.HPAC.HHE. 2023-03-16T15:51:48.40 0.6 undecidable manual S 21 222.8103 54 -0.25 40
IV.CROCE.HHE. 2023-03-16T15:51:47.89 0.6 undecidable manual S 9 224.3088 54 -1.08 29
IV.MSRU.HHZ. 2023-03-16T15:51:46.47 0.3 undecidable manual P 17 399.3003 54 0.74 23
IV.MPNC.HHZ. 2023-03-16T15:51:43.85 0.6 undecidable manual P 16 382.8279 54 0.18 19
IV.AIO.HHZ. 2023-03-16T15:51:41.65 1.0 undecidable manual P 15 361.1607 54 0.66 8
IV.CIMI.HHZ. 2023-03-16T15:51:39.40 0.1 undecidable manual P 352 341.8023 54 0.83 31
IV.CSLB.HHZ. 2023-03-16T15:51:39.51 0.3 undecidable manual P 359 344.1999 54 0.64 26
IV.CPTP.HHZ. 2023-03-16T15:51:32.53 0.6 undecidable manual P 0 285.3033 54 0.99 18
IV.HLNI.HHE. 2023-03-16T15:51:31.07 0.3 undecidable manual P 13 286.3023 54 -0.6 32
IV.HVZN.HNZ. 2023-03-16T15:51:28.25 0.6 undecidable manual P 11 264.9348 54 -0.76 25
IV.HAVL.HHZ. 2023-03-16T15:51:26.54 0.3 undecidable manual P 20 251.5593 54 -0.8 42
IV.HMDC.HHZ. 2023-03-16T15:51:25.93 0.3 undecidable manual P 14 242.4795 54 -0.28 53
IV.HVIT.HHE. 2023-03-16T15:51:25.53 0.3 undecidable manual P 8 241.6803 54 -0.58 49
ML.MSDA.BHE. 2023-03-16T15:51:24.60 0.6 undecidable manual S 15 122.1888 92 -0.27 63
IV.HPAC.HHE. 2023-03-16T15:51:24.59 0.3 undecidable manual P 21 222.8103 54 0.82 50
MN.WDD.HHZ. 2023-03-16T15:51:23.50 0.6 undecidable manual S 17 116.3946 92 0.18 66
IV.CROCE.HHE. 2023-03-16T15:51:23.28 0.3 undecidable manual P 9 224.3088 54 -0.67 54
IV.LPDG.HHE. 2023-03-16T15:51:15.54 0.6 undecidable manual P 299 156.7209 92 0.18 59
IV.LINA.HHE. 2023-03-16T15:51:15.68 1.0 undecidable manual P 315 163.2144 54 -0.67 26
ML.MSDA.BHE. 2023-03-16T15:51:10.00 0.3 undecidable manual P 15 122.1888 92 -0.04 100
MN.WDD.HHZ. 2023-03-16T15:51:09.35 0.3 undecidable manual P 17 116.3946 92 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.WDD.HHE. ML:4.3 0.01485 0.54 AML other m 2023-03-16T15:51:24.50
MN.WDD.HHN. ML:4.0 0.007865 0.58 AML other m 2023-03-16T15:51:28.67
IV.CIMI.HNN. ML:3.6 0.0003705 0.92 AML other m 2023-03-16T15:51:40.11
IV.HMDC.HHN. ML:3.9 0.0017900000000000001 0.44 AML other m 2023-03-16T15:52:01.49
IV.HMDC.HNN. ML:3.9 0.0017000000000000001 0.44 AML other m 2023-03-16T15:52:01.50
IV.HMDC.HHE. ML:3.4 0.0004515 1.22 AML other m 2023-03-16T15:52:05.71
IV.HMDC.HNE. ML:4.0 0.001835 1.22 AML other m 2023-03-16T15:52:05.72
IV.HAVL.HHE. ML:4.0 0.0018599999999999999 1.24 AML other m 2023-03-16T15:52:07.92
IV.HAVL.HHN. ML:4.0 0.00177 1.26 AML other m 2023-03-16T15:52:08.21
IV.CLTA.HHE. ML:3.3 0.00033199999999999994 1.1 AML other m 2023-03-16T15:52:15.17
IV.CLTA.HHN. ML:3.2 0.0003015 0.52 AML other m 2023-03-16T15:52:24.86
IV.CORL.HNE. ML:3.4 0.0002185 1.22 AML other m 2023-03-16T15:52:36.25
IV.CORL.HHE. ML:3.4 0.0002065 1.22 AML other m 2023-03-16T15:52:36.25
IV.CIMI.HNE. ML:3.7 0.0004235 1.36 AML other m 2023-03-16T15:52:40.19
IV.CIMI.HHE. ML:3.6 0.00035999999999999997 1.36 AML other m 2023-03-16T15:52:40.20
IV.MPNC.HHE. ML:3.9 0.0005265 1.2 AML other m 2023-03-16T15:52:41.00
IV.CSLB.HNN. ML:3.3 0.0001805 1.02 AML other m 2023-03-16T15:52:42.21
IV.CSLB.HHN. ML:3.3 0.000174 1 AML other m 2023-03-16T15:52:42.73
IV.CSLB.HNE. ML:3.3 0.0001595 1.16 AML other m 2023-03-16T15:52:42.40
IV.CORL.HNN. ML:3.5 0.000277 0.7 AML other m 2023-03-16T15:52:43.44
IV.CORL.HHN. ML:3.5 0.000275 0.68 AML other m 2023-03-16T15:52:43.44
IV.CSLB.HHE. ML:3.2 0.0001525 1.16 AML other m 2023-03-16T15:52:44.60
IV.CIMI.HHN. ML:3.5 0.0002825 0.86 AML other m 2023-03-16T15:52:46.86
IV.MPNC.HHN. ML:4.1 0.0008799999999999999 1.2 AML other m 2023-03-16T15:52:50.33
IV.MSRU.HHE. ML:4.0 0.0006145 0.42 AML other m 2023-03-16T15:52:55.46
IV.MSRU.HHN. ML:3.8 0.0003875 0.88 AML other m 2023-03-16T15:52:59.10
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