Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 3.7 on date 09-10-2021 and time 08:52:46 (Italy) in region Malta [Sea]

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

  • 09-10-2021 06:52:46 (UTC)
  • 09-10-2021 08:52:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.7110, 14.1360 at 32 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 2021-10-09
06:52:46		 34.7113 14.1362 32 2022-03-30
13:04:27		 Bollettino Sismico Italiano INGV 99440201
Reviewed
Rev100 		ML 3.7 2021-10-09
06:52:45		 34.8248 13.9428 10 2021-10-09
07:16:58		 Sala Sismica INGV-Roma 96371191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-09 06:52:46 ± 0.48
Latitude 34.7113 ± 0.0207
Longitude 14.1362 ± 0.0459
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99440201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4313
Semi-minor axis of confidence ellipse (meter) 2035
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 4310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 293
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 1.16912
Epicentral distance of station farthest from the epicenter (degree) 5.05599
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:3.7

Field Value
Value 3.7
Uncertainty 0.2
Num. used stations 65
Type of magnitude ML
Reference to an origin 96371191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-09 07:16:58

ML:3.7

Field Value
Value 3.7
Uncertainty 0.2
Num. used stations 65
Type of magnitude ML
Reference to an origin 99440201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-07 15:10:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHZ. 2021-10-09T06:54:02.31 0.3 undecidable manual P 21 561.216 54 0.9 24
IV.HAGA.HHZ. 2021-10-09T06:54:00.30 0.6 undecidable manual S 17 299.7777 54 0.62 24
IV.RAFF.HHZ. 2021-10-09T06:53:55.20 0.6 undecidable manual S 4 279.3093 54 -0.07 36
IV.HAVL.HHZ. 2021-10-09T06:53:52.50 0.6 undecidable manual S 19 264.6351 54 0.38 39
IV.HMDC.HHZ. 2021-10-09T06:53:50.20 0.6 undecidable manual S 13 256.0548 54 -0.05 45
IV.HVIT.HHZ. 2021-10-09T06:53:50.10 0.6 undecidable manual S 8 255.4554 54 -0.02 45
IV.PLAC.HHZ. 2021-10-09T06:53:49.76 0.3 undecidable manual P 26 462.5925 54 0.62 31
IV.ISPIC.EHZ. 2021-10-09T06:53:47.20 0.6 undecidable manual S 17 239.6823 54 0.47 46
IV.SOI.EHZ. 2021-10-09T06:53:43.32 0.3 undecidable manual P 24 410.3781 54 0.68 32
IV.MILZ.HHZ. 2021-10-09T06:53:42.67 0.3 undecidable manual P 14 406.7817 54 0.47 35
IV.MPNC.HHZ. 2021-10-09T06:53:41.57 0.3 undecidable manual P 16 396.2034 54 0.69 32
IV.MCPD.HHZ. 2021-10-09T06:53:39.82 0.3 undecidable manual P 8 381.8289 54 0.73 32
IV.MSFR.HHZ. 2021-10-09T06:53:38.20 0.3 undecidable manual P 6 370.851 54 0.48 36
IV.MUCR.HHZ. 2021-10-09T06:53:38.69 0.3 undecidable manual P 10 375.4353 54 0.4 36
IV.GIB.HHZ. 2021-10-09T06:53:37.24 0.3 undecidable manual P 358 363.858 54 0.38 37
IV.SOLUN.HHZ. 2021-10-09T06:53:37.79 0.3 undecidable manual P 352 378.8319 54 -0.94 30
IV.CSLB.HHZ. 2021-10-09T06:53:36.09 0.3 undecidable manual P 359 357.975 54 -0.03 40
IV.EMSG.HHZ. 2021-10-09T06:53:36.15 0.3 undecidable manual P 12 352.4805 54 0.71 34
IV.SCIAR.HHZ. 2021-10-09T06:53:36.03 0.3 undecidable manual P 355 359.8731 54 -0.33 37
IV.EPZF.HHZ. 2021-10-09T06:53:36.61 0.3 undecidable manual P 10 351.2817 54 1.32 25
IV.ESCV.HHZ. 2021-10-09T06:53:35.75 0.3 undecidable manual P 10 342.2019 54 1.59 22
IV.EPIT.HHZ. 2021-10-09T06:53:35.80 0.6 undecidable manual P 13 353.5794 54 0.22 26
IV.PETRA.HHZ. 2021-10-09T06:53:35.14 0.1 undecidable manual P 360 346.2867 54 0.46 49
IV.EMPL.HHZ. 2021-10-09T06:53:34.38 0.3 undecidable manual P 13 337.5066 54 0.8 33
IV.ALJA.HHZ. 2021-10-09T06:53:34.04 0.3 undecidable manual P 354 338.7054 54 0.31 39
IV.GALF.HHZ. 2021-10-09T06:53:33.93 0.3 undecidable manual P 6 334.9092 54 0.67 35
IV.MMGO.HHE. 2021-10-09T06:53:32.22 0.3 undecidable manual P 343 343.4007 54 -2.09 15
MN.VAE.HHZ. 2021-10-09T06:53:31.41 0.3 undecidable manual P 4 306.5598 54 1.69 21
IV.SCIAC.HHE. 2021-10-09T06:53:29.78 0.3 undecidable manual P 344 324.7305 54 -2.2 13
IV.HAGA.HHZ. 2021-10-09T06:53:28.41 0.3 undecidable manual P 17 299.7777 54 -0.47 39
IV.HVZN.HHZ. 2021-10-09T06:53:26.14 0.3 undecidable manual P 11 278.5101 54 -0.1 54
IV.SSY.HHZ. 2021-10-09T06:53:26.94 0.3 undecidable manual P 17 284.1045 54 0 52
IV.HSRS.HHE. 2021-10-09T06:53:26.51 0.3 undecidable manual P 20 281.607 54 -0.11 52
IV.RAFF.HHZ. 2021-10-09T06:53:25.52 0.3 undecidable manual P 4 279.3093 54 -0.81 43
IV.CLTA.HHZ. 2021-10-09T06:53:25.20 0.3 undecidable manual P 357 271.8279 54 -0.21 56
IV.HAVL.HHZ. 2021-10-09T06:53:24.06 0.3 undecidable manual P 19 264.6351 54 -0.45 57
IV.HVIT.HHZ. 2021-10-09T06:53:22.52 0.1 undecidable manual P 8 255.4554 54 -0.84 71
MN.WDD.HHZ. 2021-10-09T06:53:22.55 0.6 undecidable manual S 16 129.7701 54 -0.49 81
IV.HMDC.HHZ. 2021-10-09T06:53:22.67 0.3 undecidable manual P 13 256.0548 54 -0.77 55
IV.ISPIC.EHZ. 2021-10-09T06:53:20.88 0.3 undecidable manual P 17 239.6823 54 -0.52 69
IV.LINA.HHE. 2021-10-09T06:53:13.70 0.6 undecidable manual P 319 172.7937 54 0.62 66
MN.WDD.HHZ. 2021-10-09T06:53:06.77 0.3 undecidable manual P 16 129.7701 54 -0.95 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ISPIC.EHE. ML:3.3 0.0004435 0.52 AML other m 2021-10-09T06:53:47.60
IV.ISPIC.HNE. ML:3.5 0.0005989999999999999 0.54 AML other m 2021-10-09T06:53:47.34
IV.MPNC.HHE. ML:3.9 0.000428 0.46 AML other m 2021-10-09T06:53:49.35
IV.HMDC.HHN. ML:3.6 0.0006575 1.3 AML other m 2021-10-09T06:53:51.83
IV.HMDC.HNE. ML:3.4 0.000483 0.5 AML other m 2021-10-09T06:53:53.48
IV.HMDC.HHE. ML:3.5 0.000503 0.52 AML other m 2021-10-09T06:53:53.48
IV.HVIT.HHE. ML:3.6 0.000769 0.34 AML other m 2021-10-09T06:53:53.78
IV.HVIT.HHN. ML:3.7 0.0008305 1.04 AML other m 2021-10-09T06:53:53.28
IV.HMDC.HNN. ML:3.5 0.00063 0.76 AML other m 2021-10-09T06:53:54.42
IV.ISPIC.HNN. ML:3.7 0.0009486908499999999 1.712 AML other m 2021-10-09T06:53:55.95
IV.ISPIC.EHN. ML:3.6 0.0009019939999999999 1.7216 AML other m 2021-10-09T06:53:55.95
IV.HAVL.HHN. ML:4.0 0.0017000000000000001 0.26 AML other m 2021-10-09T06:53:57.31
IV.HVZN.HNN. ML:3.7 0.00072758905 0.3904 AML other m 2021-10-09T06:53:59.39
IV.HVZN.HHN. ML:3.7 0.0007952458 0.3808 AML other m 2021-10-09T06:53:59.39
IV.HVZN.HNE. ML:3.8 0.00098892925 0.4096 AML other m 2021-10-09T06:54:00.07
IV.HVZN.HHE. ML:3.8 0.0010402439999999998 0.4192 AML other m 2021-10-09T06:54:00.07
IV.SSY.HHE. ML:4.0 0.00137771585 0.6592 AML other m 2021-10-09T06:54:00.48
IV.SSY.HHN. ML:4.5 0.004138642 0.2784 AML other m 2021-10-09T06:54:00.74
IV.HAVL.HHE. ML:3.8 0.001072 1.68 AML other m 2021-10-09T06:54:00.06
IV.HAGA.HHE. ML:3.7 0.0006580000000000001 0.26 AML other m 2021-10-09T06:54:01.77
IV.RAFF.HHN. ML:3.8 0.0008049999999999999 0.6 AML other m 2021-10-09T06:54:01.62
IV.CLTA.HHE. ML:3.7 0.0007395 0.66 AML other m 2021-10-09T06:54:03.14
IV.RAFF.HHE. ML:3.8 0.0009565 0.72 AML other m 2021-10-09T06:54:03.16
IV.CLTA.HHN. ML:3.6 0.0006234999999999999 0.96 AML other m 2021-10-09T06:54:05.70
IV.EMSG.HHE. ML:3.7 0.00044907475 0.88 AML other m 2021-10-09T06:54:07.73
IV.HAGA.HHN. ML:3.8 0.000798 0.48 AML other m 2021-10-09T06:54:12.61
IV.GALF.HHN. ML:4.0 0.001021 1.18 AML other m 2021-10-09T06:54:13.21
IV.EMPL.HHN. ML:4.2 0.0015522355 0.2816 AML other m 2021-10-09T06:54:16.28
IV.SCIAR.HHN. ML:3.6 0.0002865663 0.6976 AML other m 2021-10-09T06:54:17.88
IV.CSLB.HHN. ML:3.5 0.0002700274 0.7424 AML other m 2021-10-09T06:54:18.04
IV.ESCV.HHN. ML:3.8 0.000611 0.98 AML other m 2021-10-09T06:54:18.11
IV.SCIAR.HNN. ML:3.6 0.00032257944999999997 1.3728 AML other m 2021-10-09T06:54:18.93
IV.SOLUN.HHN. ML:3.8 0.0003942233 1.04 AML other m 2021-10-09T06:54:18.36
IV.MSFR.HHE. ML:3.2 0.00010982705499999999 0.3008 AML other m 2021-10-09T06:54:19.22
IV.CSLB.HHE. ML:3.6 0.0003321285 1.28 AML other m 2021-10-09T06:54:20.69
IV.EMPL.HHE. ML:4.1 0.001162108 0.4992 AML other m 2021-10-09T06:54:20.08
IV.EPZF.HHN. ML:3.8 0.0005855159 1.6384 AML other m 2021-10-09T06:54:20.13
IV.EPZF.HHE. ML:3.9 0.0006061991 1.3216 AML other m 2021-10-09T06:54:20.97
IV.GALF.HHE. ML:3.9 0.0008029999999999999 0.52 AML other m 2021-10-09T06:54:20.50
IV.ALJA.HHE. ML:3.5 0.0003029809 1.1584 AML other m 2021-10-09T06:54:20.84
IV.SCIAR.HHE. ML:3.5 0.0002269911 1.4208 AML other m 2021-10-09T06:54:21.73
IV.SCIAR.HNE. ML:3.5 0.0002229132 1.3312 AML other m 2021-10-09T06:54:21.06
IV.EPIT.HHE. ML:3.7 0.00040100000000000004 0.42 AML other m 2021-10-09T06:54:21.57
IV.MCPD.HHE. ML:3.4 0.00017228989999999998 1.3184 AML other m 2021-10-09T06:54:21.81
IV.GIB.HHN. ML:4.1 0.00096814815 0.9216 AML other m 2021-10-09T06:54:22.47
IV.PETRA.HHN. ML:3.8 0.0005753802 0.9408 AML other m 2021-10-09T06:54:22.55
IV.ESCV.HHE. ML:3.8 0.000550729 1.4592 AML other m 2021-10-09T06:54:22.12
IV.EPIT.HHN. ML:3.8 0.0005275000000000001 0.62 AML other m 2021-10-09T06:54:22.49
IV.MCPD.HHN. ML:3.5 0.00021147125 0.3616 AML other m 2021-10-09T06:54:22.13
IV.GIB.HHE. ML:4.2 0.0011626020000000002 1.04 AML other m 2021-10-09T06:54:22.03
IV.PETRA.HHE. ML:3.8 0.0005982912499999999 0.5984 AML other m 2021-10-09T06:54:22.57
IV.MSFR.HHN. ML:3.4 0.00016511005 0.7616 AML other m 2021-10-09T06:54:22.86
IV.ALJA.HHN. ML:3.2 0.000162 0.86 AML other m 2021-10-09T06:54:23.92
IV.SOLUN.HHE. ML:3.9 0.00049788445 0.5216 AML other m 2021-10-09T06:54:24.12
IV.MUCR.HHE. ML:3.6 0.0002767269 0.4384 AML other m 2021-10-09T06:54:24.45
IV.EMSG.HHN. ML:3.9 0.0005996836500000001 0.64 AML other m 2021-10-09T06:54:25.87
IV.MUCR.HHN. ML:3.6 0.00028953744999999997 0.64 AML other m 2021-10-09T06:54:28.94
IV.SOI.EHN. ML:3.4 0.000135 0.46 AML other m 2021-10-09T06:54:28.66
IV.SOI.EHE. ML:3.4 0.00012357594999999998 0.4384 AML other m 2021-10-09T06:54:29.26
IV.MILZ.HHN. ML:4.0 0.0004969628 1.1808 AML other m 2021-10-09T06:54:31.25
IV.MPNC.HHN. ML:3.9 0.00044476465 0.7424 AML other m 2021-10-09T06:54:32.34
IV.MILZ.HHE. ML:4.2 0.0009961056 1.12 AML other m 2021-10-09T06:54:37.72
IV.PLAC.HNN. ML:3.4 0.00010037159500000001 0.88 AML other m 2021-10-09T06:54:37.73
IV.PLAC.HNE. ML:3.5 0.000128783525 0.4608 AML other m 2021-10-09T06:54:40.35
IV.PLAC.HHN. ML:3.5 0.00011470089999999999 0.6784 AML other m 2021-10-09T06:54:49.88
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