Earthquake with magnitude of ML 4.0 on date 31-01-2023 and time 20:09:17 (Italy) in region Malta [Sea]

A magnitude ML 4.0 earthquake occured in region: Malta [Sea], on

  • 31-01-2023 19:09:17 (UTC)
  • 31-01-2023 20:09:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 34.9170, 14.1670 at 18 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

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 4.0 2023-01-31
19:09:17
34.9167 14.1668 18 2024-03-01
17:17:57
Bollettino Sismico Italiano INGV 114938471
Reviewed
Rev100
ML 4.0 2023-01-31
19:09:15
34.793 14.1497 10 2023-01-31
19:26:04
Sala Sismica INGV-Roma 113942411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-31 19:09:17 ± 0.57
Latitude 34.9167 ± 0.0387
Longitude 14.1668 ± 0.0450
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114938471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5191
Semi-minor axis of confidence ellipse (meter) 2556
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 317
Circular confidence region, given by single value of horizontal uncertainty (meter) 5190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 269
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 1.01713
Epicentral distance of station farthest from the epicenter (degree) 4.82396
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:4.0

Field Value
Value 4.0
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 114938471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-10 09:37:09

ML:4.0

Field Value
Value 4.0
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 113942411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-31 19:26:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2023-01-31T19:10:30.57 0.6 undecidable manual P 17 535.464 54 0.13 18
IV.AGST.EHZ. 2023-01-31T19:10:28.22 0.6 undecidable manual S 20 276.4122 54 0.42 30
IV.SERS.HHZ. 2023-01-31T19:10:27.75 0.6 undecidable manual P 25 508.7019 54 0.64 17
IV.CAR1.HHZ. 2023-01-31T19:10:27.39 0.6 undecidable manual P 20 513.9966 54 -0.38 18
IV.PLAC.HHZ. 2023-01-31T19:10:18.93 0.6 undecidable manual P 27 440.9253 54 0.25 20
IV.ACATE.EHZ. 2023-01-31T19:10:18.25 0.6 undecidable manual S 7 235.6863 54 -0.77 36
IV.HMDC.HNZ. 2023-01-31T19:10:17.20 0.6 undecidable manual S 14 233.1888 54 -1.29 28
IV.CROCE.HHZ. 2023-01-31T19:10:14.41 0.6 undecidable manual S 9 215.118 54 -0.18 50
IV.SOI.EHZ. 2023-01-31T19:10:12.44 0.3 undecidable manual P 25 388.5222 54 0.28 32
IV.MSFR.HHZ. 2023-01-31T19:10:08.60 0.3 undecidable manual P 6 347.8851 54 1.5 20
IV.AIO.HHZ. 2023-01-31T19:10:08.78 0.3 undecidable manual P 15 351.981 54 1.18 24
IV.MUCR.HHZ. 2023-01-31T19:10:08.21 0.3 undecidable manual P 10 352.4805 54 0.54 31
IV.GIB.HHZ. 2023-01-31T19:10:07.05 0.6 undecidable manual P 358 341.2029 54 0.78 19
IV.PLLN.EHZ. 2023-01-31T19:10:07.81 0.6 undecidable manual P 360 341.2029 54 1.54 13
IV.EPZF.HHZ. 2023-01-31T19:10:06.25 0.3 undecidable manual P 11 328.3269 54 1.58 19
IV.EMSG.HHZ. 2023-01-31T19:10:06.21 0.3 undecidable manual P 12 329.6256 54 1.38 22
IV.ESCV.HHZ. 2023-01-31T19:10:05.07 0.3 undecidable manual P 10 319.236 54 1.53 20
IV.GALF.HHZ. 2023-01-31T19:10:04.20 0.3 undecidable manual P 6 311.9544 54 1.57 20
IV.CPTP.HHZ. 2023-01-31T19:09:59.26 0.6 undecidable manual P 360 276.3123 54 1.07 23
IV.AGST.EHZ. 2023-01-31T19:09:57.87 0.3 undecidable manual P 20 276.4122 54 -0.34 45
IV.RAFF.HHZ. 2023-01-31T19:09:55.72 0.3 undecidable manual P 4 256.3545 54 0 58
IV.ACATE.EHZ. 2023-01-31T19:09:53.27 0.3 undecidable manual P 7 235.6863 54 0.14 67
ML.XLND.BHZ. 2023-01-31T19:09:53.70 0.6 undecidable manual S 2 123.8871 93 0.36 73
IV.HVIT.HHZ. 2023-01-31T19:09:52.12 0.3 undecidable manual P 8 232.4895 54 -0.62 60
IV.HAVL.HHZ. 2023-01-31T19:09:52.87 0.3 undecidable manual P 20 242.2797 54 -1.1 45
ML.MSDA.BHZ. 2023-01-31T19:09:51.07 0.6 undecidable manual S 15 112.8981 94 0.64 69
IV.HMDC.HNZ. 2023-01-31T19:09:51.96 0.3 undecidable manual P 14 233.1888 54 -0.87 54
IV.HPAC.HHZ. 2023-01-31T19:09:51.33 0.3 undecidable manual P 21 213.6195 54 0.94 60
IV.CROCE.HHZ. 2023-01-31T19:09:49.61 0.3 undecidable manual P 9 215.118 54 -0.96 58
IV.LPDG.HHZ. 2023-01-31T19:09:43.37 0.3 undecidable manual P 296 154.4343 93 0.35 100
IV.LINA.HHZ. 2023-01-31T19:09:42.89 0.6 undecidable manual P 312 158.5191 54 -0.64 61
ML.XLND.BHZ. 2023-01-31T19:09:37.55 0.3 undecidable manual P 2 123.8871 93 -0.76 95
ML.MSDA.BHZ. 2023-01-31T19:09:35.94 0.3 undecidable manual P 15 112.8981 94 -0.69 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HPAC.HHN. ML:4.4 0.006540865 1.2704 AML other m 2023-01-31T19:10:33.69
IV.PLLN.EHN. ML:4.4 0.0021474045 0.5632 AML other m 2023-01-31T19:10:50.50
IV.GALF.HHN. ML:4.4 0.002755 0.76 AML other m 2023-01-31T19:10:52.42
IV.GALF.HNN. ML:3.5 0.00032700000000000003 0.78 AML other m 2023-01-31T19:10:52.42
IV.GIB.HHN. ML:4.2 0.00140335 1.424 AML other m 2023-01-31T19:10:52.77
IV.CPTP.HHN. ML:4.2 0.002214496 1.6384 AML other m 2023-01-31T19:10:53.98
IV.AGST.EHE. ML:4.3 0.002915 0.7 AML other m 2023-01-31T19:10:54.08
IV.RAFF.HHE. ML:4.1 0.00221 0.6 AML other m 2023-01-31T19:10:54.08
IV.AGST.EHN. ML:4.2 0.0021944055 0.8576 AML other m 2023-01-31T19:10:54.73
IV.GIB.HHE. ML:4.2 0.001542519 0.8192 AML other m 2023-01-31T19:10:55.51
IV.SOI.EHE. ML:3.6 0.000258 0.86 AML other m 2023-01-31T19:10:55.13
IV.ESCV.HHE. ML:4.1 0.001327553 0.7424 AML other m 2023-01-31T19:10:57.06
IV.SERS.HHN. ML:3.6 0.00010985173 0.96 AML other m 2023-01-31T19:10:57.43
IV.RAFF.HHN. ML:4.1 0.0022061150000000002 0.9984 AML other m 2023-01-31T19:10:58.67
IV.EPZF.HHE. ML:4.2 0.0016624235 0.6528 AML other m 2023-01-31T19:11:02.48
IV.MSFR.HHN. ML:3.8 0.000501398 0.1056 AML other m 2023-01-31T19:11:04.11
IV.GALF.HNE. ML:3.4 0.0002495 1.4 AML other m 2023-01-31T19:11:04.23
IV.GALF.HHE. ML:4.3 0.0022800000000000003 1.44 AML other m 2023-01-31T19:11:04.25
IV.EMSG.HHN. ML:4.1 0.0012250000000000002 1.42 AML other m 2023-01-31T19:11:04.98
IV.EMSG.HHE. ML:4.2 0.0015049999999999998 1 AML other m 2023-01-31T19:11:05.64
IV.PLLN.EHE. ML:4.4 0.0020011025 0.8448 AML other m 2023-01-31T19:11:05.23
IV.ESCV.HHN. ML:4.2 0.0016 0.86 AML other m 2023-01-31T19:11:07.22
IV.EPZF.HHN. ML:4.2 0.0015499999999999997 0.86 AML other m 2023-01-31T19:11:07.50
IV.MUCR.HHE. ML:3.8 0.00056944395 0.5888 AML other m 2023-01-31T19:11:08.35
IV.PLAC.HHN. ML:3.9 0.0003255 0.54 AML other m 2023-01-31T19:11:09.34
IV.PLAC.HNN. ML:3.9 0.0003205 0.6 AML other m 2023-01-31T19:11:09.37
IV.PLAC.HNE. ML:3.8 0.000282 1.28 AML other m 2023-01-31T19:11:09.08
IV.PLAC.HHE. ML:3.8 0.000264 1.24 AML other m 2023-01-31T19:11:09.09
IV.AIO.HHN. ML:3.8 0.0005375531 0.2976 AML other m 2023-01-31T19:11:10.00
IV.AIO.HHE. ML:4.0 0.000786 0.5 AML other m 2023-01-31T19:11:13.33
IV.MUCR.HHN. ML:3.9 0.0006039999999999999 1.32 AML other m 2023-01-31T19:11:14.78
IV.MSFR.HHE. ML:3.8 0.0004910279 1.2416 AML other m 2023-01-31T19:11:15.90
IV.SOI.EHN. ML:3.6 0.000273 1.36 AML other m 2023-01-31T19:11:16.01
IV.GRI.EHN. ML:3.7 0.00016849095 0.4992 AML other m 2023-01-31T19:11:22.72
IV.SERS.HNE. ML:3.7 0.00013681090000000002 1.2192 AML other m 2023-01-31T19:11:22.78
IV.GRI.EHE. ML:3.7 0.00018449999999999999 1.24 AML other m 2023-01-31T19:11:30.13
IV.CAR1.HHE. ML:3.9 0.00023 0.98 AML other m 2023-01-31T19:11:36.02
IV.CAR1.HNE. ML:4.0 0.000237 0.98 AML other m 2023-01-31T19:11:36.02
IV.CET2.HHE. ML:4.0 0.00020601535 1.2576 AML other m 2023-01-31T19:11:37.05
IV.CET2.HHN. ML:4.0 0.000254 1.28 AML other m 2023-01-31T19:11:39.00
IV.CAR1.HNN. ML:4.2 0.000412 0.66 AML other m 2023-01-31T19:11:44.60
IV.CAR1.HHN. ML:4.2 0.000374 0.64 AML other m 2023-01-31T19:11:44.61
IV.SERS.HNN. ML:3.7 0.00014441684999999999 0.7968 AML other m 2023-01-31T19:11:47.88
IV.SERS.HHE. ML:3.7 0.00014615 0.9 AML other m 2023-01-31T19:11:48.89
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