Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.2 on date 01-08-2023 and time 01:34:09 (Italy) in region Malta [Sea]

A magnitude ML 3.2 earthquake occured in region: Malta [Sea], on

  • 31-07-2023 23:34:09 (UTC)
  • 01-08-2023 01:34:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.8650, 14.2410 at 11 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 3.2 2023-07-31
23:34:09		 34.8652 14.2408 11 2024-09-10
16:44:29		 Bollettino Sismico Italiano INGV 129232331
Reviewed
Rev100 		ML 3.2 2023-07-31
23:34:11		 34.9152 14.2682 17 2023-07-31
23:49:43		 Sala Sismica INGV-Roma 119741481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-31 23:34:09 ± 0.37
Latitude 34.8652 ± 0.0216
Longitude 14.2408 ± 0.0537
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 129232331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4870
Semi-minor axis of confidence ellipse (meter) 2410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 4870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 316
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 1.05401
Epicentral distance of station farthest from the epicenter (degree) 4.88152
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:3.2

Field Value
Value 3.2
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 129232331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-06-25 23:32:52

ML:3.2

Field Value
Value 3.2
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 119741481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-31 23:49:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHZ. 2023-07-31T23:35:23.98 0.3 undecidable manual P 21 541.8465 38 0.24 17
IV.CET2.HHZ. 2023-07-31T23:35:23.15 0.3 undecidable manual P 16 539.0493 38 -0.24 17
IV.CAR1.HHZ. 2023-07-31T23:35:20.11 0.3 undecidable manual P 19 517.0935 38 -0.55 16
IV.SERS.HHZ. 2023-07-31T23:35:19.92 0.3 undecidable manual P 24 510.9996 38 0.02 19
IV.HPAC.HHZ. 2023-07-31T23:35:10.81 0.6 undecidable manual S 19 216.7164 38 2.92 3
IV.SICLA.EHZ. 2023-07-31T23:35:06.55 0.6 undecidable manual P 19 398.4012 38 0.65 12
IV.MSRU.HHZ. 2023-07-31T23:35:05.54 0.6 undecidable manual P 16 393.606 38 0.25 14
IV.MUCR.HHZ. 2023-07-31T23:35:01.15 0.3 undecidable manual P 9 356.976 38 0.41 21
IV.NOV.HHZ. 2023-07-31T23:35:01.13 0.6 undecidable manual P 13 359.8731 38 0.05 15
IV.EPZF.HHZ. 2023-07-31T23:34:59.16 0.3 undecidable manual P 9 332.8113 38 1.43 13
IV.GIB.HHZ. 2023-07-31T23:34:59.92 0.1 undecidable manual P 357 347.1858 38 0.41 28
IV.CSLB.HHZ. 2023-07-31T23:34:59.00 0.3 undecidable manual P 357 341.2029 38 0.23 22
IV.CORL.HHZ. 2023-07-31T23:34:59.47 0.1 undecidable manual P 346 346.2867 38 0.06 30
IV.CIMI.HHZ. 2023-07-31T23:34:58.70 0.1 undecidable manual P 350 339.9042 38 0.1 30
IV.ALJA.HHZ. 2023-07-31T23:34:56.89 0.3 undecidable manual P 352 322.8324 38 0.4 21
IV.ESML.HHZ. 2023-07-31T23:34:56.72 0.3 undecidable manual P 10 310.6557 38 1.75 11
IV.MMGO.HHZ. 2023-07-31T23:34:55.50 0.6 undecidable manual P 340 330.225 38 -1.9 7
IV.RESU.HHZ. 2023-07-31T23:34:55.85 0.3 undecidable manual P 357 308.9574 38 1.09 16
IV.AGST.EHZ. 2023-07-31T23:34:50.06 0.6 undecidable manual P 18 279.609 38 -1.05 14
IV.HLNI.HHZ. 2023-07-31T23:34:50.29 0.3 undecidable manual P 11 281.2074 38 -1.02 21
IV.SSY.HHZ. 2023-07-31T23:34:48.64 0.3 undecidable manual P 16 265.0347 38 -0.66 29
IV.HVZN.HHZ. 2023-07-31T23:34:48.20 0.3 undecidable manual P 9 260.1396 38 -0.48 33
IV.RAFF.HHZ. 2023-07-31T23:34:47.92 0.3 undecidable manual P 2 261.738 38 -0.96 27
ML.XLND.BHE. 2023-07-31T23:34:46.73 0.6 undecidable manual S 359 129.4704 50 0 50
IV.HMDC.HHZ. 2023-07-31T23:34:45.28 0.3 undecidable manual P 12 237.2847 38 -0.56 38
IV.HPAC.HHZ. 2023-07-31T23:34:43.87 0.3 undecidable manual P 19 216.7164 38 0.59 44
ML.MSDA.BHE. 2023-07-31T23:34:43.27 0.6 undecidable manual S 11 116.994 50 -0.12 50
ML.XLND.BHE. 2023-07-31T23:34:30.99 0.3 undecidable manual P 359 129.4704 50 -0.06 74
ML.MSDA.BHE. 2023-07-31T23:34:29.24 0.1 undecidable manual P 11 116.994 50 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HPAC.HHN. ML:3.5 0.0007655000000000001 1.24 AML other m 2023-07-31T23:34:50.75
IV.HMDC.HHE. ML:2.9 0.0001735 1.22 AML other m 2023-07-31T23:34:53.70
IV.HMDC.HHN. ML:3.0 0.0002355 0.68 AML other m 2023-07-31T23:35:00.54
IV.HVZN.HHN. ML:3.4 0.000391 0.42 AML other m 2023-07-31T23:35:00.68
IV.HVZN.HNN. ML:3.4 0.000383 0.44 AML other m 2023-07-31T23:35:00.71
IV.SSY.HNN. ML:3.5 0.0005665000000000001 0.92 AML other m 2023-07-31T23:35:01.67
IV.SSY.HNE. ML:3.5 0.0005515 0.28 AML other m 2023-07-31T23:35:01.67
IV.SSY.HHN. ML:3.6 0.0007215 0.26 AML other m 2023-07-31T23:35:01.65
IV.RAFF.HHE. ML:2.9 0.00013949999999999998 1.02 AML other m 2023-07-31T23:35:07.12
IV.GIB.HHE. ML:3.4 0.000199 1.44 AML other m 2023-07-31T23:35:07.19
IV.HPAC.HHE. ML:3.5 0.000838 0.9 AML other m 2023-07-31T23:35:11.02
IV.HVZN.HHE. ML:3.2 0.00027800000000000004 1.58 AML other m 2023-07-31T23:35:13.91
IV.HVZN.HNE. ML:3.3 0.000328 1.6 AML other m 2023-07-31T23:35:13.15
IV.ALJA.HHN. ML:2.8 0.0000634 1.4 AML other m 2023-07-31T23:35:14.92
IV.NOV.HHN. ML:3.1 0.00009070000000000001 0.7 AML other m 2023-07-31T23:35:16.32
IV.NOV.HHE. ML:3.2 0.00011350000000000001 1.46 AML other m 2023-07-31T23:35:16.90
IV.EPZF.HHN. ML:3.4 0.00026549999999999995 0.56 AML other m 2023-07-31T23:35:17.91
IV.RAFF.HHN. ML:3.0 0.00016949999999999997 0.86 AML other m 2023-07-31T23:35:18.51
IV.SSY.HHE. ML:3.2 0.00029200000000000005 1.16 AML other m 2023-07-31T23:35:19.27
IV.RESU.HHE. ML:2.9 0.00008529999999999999 0.52 AML other m 2023-07-31T23:35:19.36
IV.AGST.EHN. ML:3.4 0.0003645 0.94 AML other m 2023-07-31T23:35:23.22
IV.HLNI.HHE. ML:3.2 0.0002175 0.5 AML other m 2023-07-31T23:35:24.62
IV.HLNI.HNE. ML:3.2 0.000235 0.54 AML other m 2023-07-31T23:35:24.62
IV.HLNI.HHN. ML:3.2 0.00021200000000000003 1.3 AML other m 2023-07-31T23:35:24.16
IV.HLNI.HNN. ML:3.2 0.0002325 1.32 AML other m 2023-07-31T23:35:24.82
IV.AGST.EHE. ML:3.3 0.0003005 0.3 AML other m 2023-07-31T23:35:28.21
IV.RESU.HHN. ML:3.0 0.00011780000000000002 0.52 AML other m 2023-07-31T23:35:31.94
IV.CAR1.HHE. ML:3.1 0.00003665 1.18 AML other m 2023-07-31T23:35:32.98
IV.EPZF.HHE. ML:3.4 0.000229 0.54 AML other m 2023-07-31T23:35:38.30
IV.CIMI.HHN. ML:3.3 0.000168 0.76 AML other m 2023-07-31T23:35:39.39
IV.ALJA.HHE. ML:2.9 0.0000748 0.58 AML other m 2023-07-31T23:35:39.90
IV.CSLB.HHN. ML:2.9 0.00006500000000000001 0.44 AML other m 2023-07-31T23:35:43.59
IV.CSLB.HHE. ML:2.9 0.0000693 0.96 AML other m 2023-07-31T23:35:44.16
IV.GIB.HHN. ML:3.5 0.00027 1.38 AML other m 2023-07-31T23:35:45.02
IV.MUCR.HHE. ML:3.1 0.00009984999999999999 0.76 AML other m 2023-07-31T23:35:46.65
IV.MUCR.HHN. ML:3.1 0.00009475 0.74 AML other m 2023-07-31T23:35:47.30
IV.CIMI.HHE. ML:3.2 0.000157 1.16 AML other m 2023-07-31T23:35:47.26
IV.CORL.HHN. ML:3.1 0.00010614999999999999 0.62 AML other m 2023-07-31T23:35:49.57
IV.MSRU.HHE. ML:3.5 0.0001795 0.6 AML other m 2023-07-31T23:35:50.39
IV.MSRU.HHN. ML:3.4 0.0001675 1.3 AML other m 2023-07-31T23:35:50.30
IV.CORL.HHE. ML:3.1 0.000117 0.48 AML other m 2023-07-31T23:35:51.00
IY.MCDA.HHE.00 ML:3.5 0.0000826 1.46 AML other m 2023-07-31T23:36:07.25
IV.CAR1.HHN. ML:3.1 0.000036400000000000004 0.84 AML other m 2023-07-31T23:36:19.08
IY.MCDA.HHN.00 ML:3.5 0.0000883 1.36 AML other m 2023-07-31T23:36:23.08
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