Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.6 on date 09-10-2021 and time 14:57:52 (UTC) in region Malta [Sea]

A magnitude ML 3.6 earthquake occured in region: Malta [Sea], on

  • 09-10-2021 14:57:52 (UTC)
  • 09-10-2021 16:57:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.7500, 13.9660 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 3.6 2021-10-09
14:57:52		 34.7502 13.9663 10 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99440281
Reviewed
Rev100 		ML 3.6 2021-10-09
14:57:54		 34.7818 14.0103 15 2021-10-09
15:18:35		 Sala Sismica INGV-Roma 96385891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-09 14:57:52 ± 0.19
Latitude 34.7502 ± 0.0135
Longitude 13.9663 ± 0.0142
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99440281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1800
Semi-minor axis of confidence ellipse (meter) 890
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 322
Circular confidence region, given by single value of horizontal uncertainty (meter) 1800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 295
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 4.95616
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:3.6

Field Value
Value 3.6
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 99440281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-14 13:58:12

ML:3.6

Field Value
Value 3.6
Uncertainty 0.2
Num. used stations 33
Type of magnitude ML
Reference to an origin 96385891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-09 15:18:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.POFI.HHZ. 2021-10-09T14:59:40.27 3.0 undecidable manual Pn 2.94 0
IV.VIVA.HHZ. 2021-10-09T14:59:39.35 3.0 positive manual Pn -0.05 0
IV.MTMR.EHZ. 2021-10-09T14:59:32.94 3.0 undecidable manual Pg 6.69 0
MN.TIP.HHZ. 2021-10-09T14:59:08.00 0.3 undecidable manual P 26 550.1382 38 -0.13 24
IV.HAVL.HHZ. 2021-10-09T14:59:01.17 0.3 undecidable manual S 23 266.2335 38 -0.85 37
IV.PLAC.HHZ. 2021-10-09T14:58:57.80 0.3 undecidable manual P 27 465.6783 38 0.18 27
IV.IFIL.HHZ. 2021-10-09T14:58:52.49 0.3 undecidable manual P 7 426.5508 38 -0.27 27
IV.MPNC.HHZ. 2021-10-09T14:58:49.28 0.3 undecidable manual P 18 396.5031 38 0.26 28
IV.MCPD.HHZ. 2021-10-09T14:58:47.05 0.6 undecidable manual P 10 379.9308 38 0.09 20
IV.ERC.EHZ. 2021-10-09T14:58:47.40 0.3 undecidable manual P 342 384.9258 38 -0.18 29
IV.MUCR.HHZ. 2021-10-09T14:58:46.31 0.6 undecidable manual P 12 374.1477 38 0.08 20
IV.MSFR.HHZ. 2021-10-09T14:58:45.71 0.6 undecidable manual P 9 368.5533 38 0.18 20
IV.GIB.HHZ. 2021-10-09T14:58:44.71 0.6 undecidable manual P 1 359.4735 38 0.31 19
IV.CSLB.HHZ. 2021-10-09T14:58:43.80 0.3 undecidable manual P 1 353.6793 38 0.12 30
IV.ESCV.HHZ. 2021-10-09T14:58:42.29 0.3 undecidable manual P 13 341.0031 38 0.18 30
IV.PETRA.HHZ. 2021-10-09T14:58:42.48 0.3 undecidable manual P 2 342.3018 38 0.21 30
IV.EMPL.HHZ. 2021-10-09T14:58:41.92 0.6 undecidable manual P 15 337.107 38 0.3 20
IV.GALF.HHZ. 2021-10-09T14:58:41.22 0.6 undecidable manual P 9 332.8113 38 0.13 21
IV.RESU.HHZ. 2021-10-09T14:58:40.05 0.6 undecidable manual P 1 321.4338 38 0.38 20
IV.MCT.HHN. 2021-10-09T14:58:39.82 0.3 undecidable manual P 354 319.8354 38 0.35 30
IV.CMDO.HHZ. 2021-10-09T14:58:37.36 0.6 undecidable manual P 358 301.2762 38 0.19 21
MN.VAE.HHZ. 2021-10-09T14:58:37.34 0.6 undecidable manual P 6 303.5628 38 -0.11 21
IV.HAGA.HHZ. 2021-10-09T14:58:36.68 0.3 undecidable manual P 20 300.7767 38 -0.42 30
IV.SSY.HHZ. 2021-10-09T14:58:35.09 0.3 undecidable manual P 20 285.0036 38 -0.05 39
IV.HSRS.HNN. 2021-10-09T14:58:34.71 0.6 undecidable manual P 23 283.3053 38 -0.22 26
IV.HVZN.HNZ. 2021-10-09T14:58:34.31 0.6 undecidable manual P 14 277.611 38 0.09 28
IV.RAFF.HHZ. 2021-10-09T14:58:33.90 0.3 undecidable manual P 7 276.5121 38 -0.19 41
IV.CLTA.HHZ. 2021-10-09T14:58:32.70 0.3 undecidable manual P 360 267.1326 38 -0.21 45
IV.HAVL.HHZ. 2021-10-09T14:58:32.65 0.6 undecidable manual P 23 266.2335 38 -0.15 31
IV.HMDC.HHE. 2021-10-09T14:58:31.41 0.6 undecidable manual P 16 255.7551 38 -0.09 34
IV.HVIT.HHZ. 2021-10-09T14:58:31.02 0.6 undecidable manual P 11 253.7571 38 -0.23 34
MN.WDD.HHZ. 2021-10-09T14:58:30.62 0.3 undecidable manual S 23 130.7691 50 0.14 100
IV.ISPIC.EHE. 2021-10-09T14:58:29.56 0.6 undecidable manual P 20 240.4815 38 -0.04 39
IV.LINA.HHE. 2021-10-09T14:58:18.93 0.6 undecidable manual P 322 159.5181 50 -0.09 62
MN.WDD.HHZ. 2021-10-09T14:58:14.82 0.3 undecidable manual P 23 130.7691 50 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPNC.HHE. ML:3.7 0.0003105 0.68 AML other m 2021-10-09T14:58:53.49
IV.PLAC.HHE. ML:3.4 0.00009900000000000001 0.42 AML other m 2021-10-09T14:59:01.71
IV.HVIT.HHN. ML:3.6 0.000841 0.62 AML other m 2021-10-09T14:59:03.83
IV.HVIT.HHE. ML:3.7 0.000977 1.58 AML other m 2021-10-09T14:59:05.19
IV.HAVL.HHE. ML:3.6 0.000733 0.66 AML other m 2021-10-09T14:59:11.84
IV.PLAC.HNN. ML:3.4 0.00010245 0.44 AML other m 2021-10-09T14:59:13.39
IV.HAVL.HHN. ML:3.8 0.001044 0.82 AML other m 2021-10-09T14:59:16.45
IV.RAFF.HHN. ML:3.7 0.0007384999999999999 0.48 AML other m 2021-10-09T14:59:16.49
IV.RAFF.HHE. ML:3.8 0.000861 0.56 AML other m 2021-10-09T14:59:16.63
IV.CLTA.HHE. ML:3.4 0.0004605 0.64 AML other m 2021-10-09T14:59:17.75
IV.CLTA.HHN. ML:3.3 0.00034750000000000004 0.82 AML other m 2021-10-09T14:59:20.44
IV.ESCV.HHN. ML:3.7 0.000449 1.18 AML other m 2021-10-09T14:59:24.29
IV.GIB.HHE. ML:3.9 0.000598 1.3 AML other m 2021-10-09T14:59:26.87
IV.HAGA.HHN. ML:3.8 0.0007059999999999999 0.72 AML other m 2021-10-09T14:59:26.27
IV.HAGA.HHE. ML:3.8 0.000755 0.72 AML other m 2021-10-09T14:59:26.63
IV.PETRA.HHN. ML:3.6 0.000377 1.56 AML other m 2021-10-09T14:59:28.13
IV.GALF.HHN. ML:4.0 0.0009235 1.48 AML other m 2021-10-09T14:59:30.10
IV.ERC.EHE. ML:3.3 0.0001325 1.06 AML other m 2021-10-09T14:59:31.67
IV.RESU.HHN. ML:3.5 0.0003175 1.38 AML other m 2021-10-09T14:59:35.08
IV.RESU.HHE. ML:3.4 0.000263 0.68 AML other m 2021-10-09T14:59:35.46
IV.MPNC.HHN. ML:3.7 0.0003165 1.4 AML other m 2021-10-09T14:59:37.10
IV.PETRA.HHE. ML:3.7 0.000406 1.36 AML other m 2021-10-09T14:59:37.91
IV.ESCV.HHE. ML:3.8 0.0005405 0.58 AML other m 2021-10-09T14:59:40.05
IV.GALF.HHE. ML:3.8 0.0006335 1.18 AML other m 2021-10-09T14:59:40.18
IV.CSLB.HHE. ML:3.3 0.00016499999999999997 0.92 AML other m 2021-10-09T14:59:40.48
IV.IFIL.HHE. ML:4.1 0.0006625 0.5 AML other m 2021-10-09T14:59:44.89
IV.MUCR.HHE. ML:3.6 0.00027 0.86 AML other m 2021-10-09T14:59:45.79
IV.CSLB.HHN. ML:3.4 0.000194 0.68 AML other m 2021-10-09T14:59:45.18
IV.MSFR.HHN. ML:3.2 0.00011025 0.54 AML other m 2021-10-09T14:59:45.53
IV.ERC.EHN. ML:3.4 0.0001645 1.58 AML other m 2021-10-09T14:59:46.85
IV.MUCR.HHN. ML:3.6 0.00029 0.62 AML other m 2021-10-09T14:59:47.97
IV.GIB.HHN. ML:3.8 0.0004935 1.3 AML other m 2021-10-09T14:59:48.16
IV.MCPD.HHN. ML:3.4 0.000189 0.64 AML other m 2021-10-09T14:59:48.52
IV.PLAC.HNE. ML:3.5 0.0001185 0.52 AML other m 2021-10-09T14:59:48.75
IV.MSFR.HHE. ML:3.2 0.00011899999999999999 0.72 AML other m 2021-10-09T14:59:49.25
IV.IFIL.HHN. ML:3.7 0.000261 0.48 AML other m 2021-10-09T14:59:49.60
IV.MCPD.HHE. ML:3.5 0.00021349999999999999 0.54 AML other m 2021-10-09T14:59:51.60
IV.PLAC.HHN. ML:3.5 0.00010594999999999999 0.68 AML other m 2021-10-09T15:00:07.73
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