Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 16-09-2021 and time 23:57:29 (UTC) in region Mar Ionio Meridionale (MARE)

A magnitude ML 2.5 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 16-09-2021 23:57:29 (UTC)
  • 17-09-2021 01:57:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.3100, 16.2400 at 30 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 2.5 2021-09-16
23:57:29		 36.3103 16.2397 30 2022-03-30
13:04:42		 Bollettino Sismico Italiano INGV 102360111
Reviewed
Rev100 		ML 2.5 2021-09-16
23:57:29		 36.4582 16.3125 7 2021-09-17
00:10:56		 Sala Sismica INGV-Roma 95527471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-16 23:57:29 ± 0.37
Latitude 36.3103 ± 0.0243
Longitude 16.2397 ± 0.0223
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102360111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3038
Semi-minor axis of confidence ellipse (meter) 1500
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
Circular confidence region, given by single value of horizontal uncertainty (meter) 3040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 270
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 1.10617
Epicentral distance of station farthest from the epicenter (degree) 4.14767
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 102360111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-25 09:49:30

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 95527471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-17 00:10:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCTE.HHZ. 2021-09-16T23:58:28.87 0.3 undecidable manual P 24 460.3947 54 -3.14 1
IV.MTSN.HHZ. 2021-09-16T23:58:28.96 0.3 undecidable manual P 355 440.9253 54 -0.61 23
IV.MGR.HHZ. 2021-09-16T23:58:27.53 0.3 undecidable manual P 352 428.7486 54 -0.53 24
IV.GRIS.EHZ. 2021-09-16T23:58:21.50 0.3 undecidable manual P 355 382.0287 54 -0.75 23
IV.CET2.HHZ. 2021-09-16T23:58:18.51 0.3 undecidable manual P 356 357.8751 54 -0.74 24
IV.CAR1.HHZ. 2021-09-16T23:58:15.14 0.3 undecidable manual P 360 326.5287 54 -0.2 29
IV.HVZN.HHZ. 2021-09-16T23:58:14.70 0.6 undecidable manual S 306 166.2114 54 0.59 50
IV.HLNI.HHZ. 2021-09-16T23:58:14.60 0.6 undecidable manual S 314 167.3103 54 0.24 54
IT.LNT.HGZ. 2021-09-16T23:58:11.18 0.6 undecidable manual S 315 154.4343 54 -0.4 56
IV.HCRL.HHZ. 2021-09-16T23:58:10.60 0.6 undecidable manual S 316 152.1366 54 -0.48 55
IV.HAGA.HHZ. 2021-09-16T23:58:09.40 0.6 undecidable manual S 319 144.8439 54 -0.11 61
IV.SSY.HHZ. 2021-09-16T23:58:08.70 0.3 undecidable manual S 313 139.9488 54 0.25 90
IV.IVPL.HHZ. 2021-09-16T23:58:07.01 0.3 undecidable manual P 335 254.6562 54 0.61 43
IV.JOPP.HHZ. 2021-09-16T23:58:06.84 0.3 undecidable manual P 353 256.6542 54 0.2 47
IV.ISPIC.EHZ. 2021-09-16T23:58:06.50 0.6 undecidable manual S 294 129.9699 54 0.19 62
IV.MSFR.HHZ. 2021-09-16T23:58:05.38 0.3 undecidable manual P 323 240.3816 54 0.77 45
IV.HAVL.HHZ. 2021-09-16T23:58:04.90 0.6 undecidable manual S 306 122.7882 54 0.13 64
IV.MILZ.HHZ. 2021-09-16T23:58:04.10 0.3 undecidable manual P 338 234.987 54 0.15 56
IV.HSRS.HHZ. 2021-09-16T23:58:04.70 0.6 undecidable manual S 314 125.3745 54 -0.62 56
IV.MUCR.HHZ. 2021-09-16T23:58:03.23 0.3 undecidable manual P 328 227.0061 54 0.28 57
IV.GALF.HHZ. 2021-09-16T23:58:02.47 0.3 undecidable manual P 317 214.7184 54 1.05 47
IV.EMSG.HHZ. 2021-09-16T23:58:01.06 0.3 undecidable manual P 326 202.7415 54 1.13 49
IV.EPZF.HHZ. 2021-09-16T23:58:01.61 0.3 undecidable manual P 324 207.7365 54 1.05 49
IV.ESCV.HHZ. 2021-09-16T23:58:00.91 0.6 undecidable manual P 322 203.241 54 0.91 36
IV.EPIT.HHZ. 2021-09-16T23:58:00.04 0.3 undecidable manual P 328 196.6587 54 0.86 57
IV.RAFF.HHZ. 2021-09-16T23:57:59.62 0.1 undecidable manual P 302 195.0603 54 0.63 84
IV.EFIU.HHZ. 2021-09-16T23:57:58.02 0.3 undecidable manual P 331 187.6677 54 -0.04 77
IV.ESAL.HHE. 2021-09-16T23:57:58.63 0.3 undecidable manual P 329 187.7676 54 0.56 68
IV.EMPL.HHZ. 2021-09-16T23:57:58.91 0.3 undecidable manual P 324 188.9664 54 0.69 64
IV.ESML.HHZ. 2021-09-16T23:57:58.43 0.3 undecidable manual P 321 188.6667 54 0.25 73
IV.ESPC.HHN. 2021-09-16T23:57:57.83 0.3 undecidable manual P 325 187.1682 54 -0.17 75
IV.EVRN.HHZ. 2021-09-16T23:57:57.37 0.3 undecidable manual P 328 181.5849 54 0.07 78
IV.EPOZ.HHZ. 2021-09-16T23:57:56.48 0.3 undecidable manual P 329 177.3891 54 -0.31 76
IV.HVZN.HHZ. 2021-09-16T23:57:55.34 0.3 undecidable manual P 306 166.2114 54 -0.05 85
IV.HVIT.HHZ. 2021-09-16T23:57:55.98 0.3 undecidable manual P 297 170.5959 54 0.04 83
IV.HLNI.HHZ. 2021-09-16T23:57:54.96 0.1 undecidable manual P 314 167.3103 54 -0.57 100
IT.LNT.HGZ. 2021-09-16T23:57:53.33 0.3 undecidable manual P 315 154.4343 54 -0.6 79
IV.HCRL.HHZ. 2021-09-16T23:57:53.06 0.3 undecidable manual P 316 152.1366 54 -0.57 80
IV.SSY.HHZ. 2021-09-16T23:57:51.39 0.3 undecidable manual P 313 139.9488 54 -0.73 78
IV.HAGA.HHZ. 2021-09-16T23:57:51.93 0.3 undecidable manual P 319 144.8439 54 -0.8 75
IV.ISPIC.EHZ. 2021-09-16T23:57:50.96 0.3 undecidable manual P 294 129.9699 54 0.08 95
IV.HSRS.HHZ. 2021-09-16T23:57:49.63 0.3 undecidable manual P 314 125.3745 54 -0.68 82
IV.HAVL.HHZ. 2021-09-16T23:57:49.24 0.3 undecidable manual P 306 122.7882 54 -0.75 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAVL.HHN. ML:2.5 0.000237 1.4 AML other m 2021-09-16T23:58:07.05
IV.HAVL.HHE. ML:2.4 0.000186 1.3 AML other m 2021-09-16T23:58:10.06
IV.SSY.HHE. ML:2.7 0.0002648473 0.2176 AML other m 2021-09-16T23:58:11.33
IV.HCRL.HHE. ML:2.6 0.00017549999999999998 0.22 AML other m 2021-09-16T23:58:11.57
IV.HSRS.HHN. ML:2.2 0.00009655 1.4 AML other m 2021-09-16T23:58:11.01
IV.SSY.HHN. ML:3.0 0.0005299677499999999 0.4864 AML other m 2021-09-16T23:58:12.81
IV.HCRL.HHN. ML:2.5 0.00013900000000000002 1.26 AML other m 2021-09-16T23:58:13.69
IV.HSRS.HHE. ML:2.1 0.0000798 0.84 AML other m 2021-09-16T23:58:14.15
IV.HLNI.HHN. ML:2.3 0.00008015 0.72 AML other m 2021-09-16T23:58:14.93
IV.HLNI.HHE. ML:2.4 0.000114 0.14 AML other m 2021-09-16T23:58:16.52
IV.HVZN.HNN. ML:2.9 0.0003005 1.58 AML other m 2021-09-16T23:58:18.13
IV.HVZN.HHN. ML:2.9 0.00030649999999999997 1.58 AML other m 2021-09-16T23:58:18.92
IV.HVZN.HHE. ML:2.8 0.0002915 0.4 AML other m 2021-09-16T23:58:21.75
IV.HVZN.HNE. ML:2.8 0.000279 0.4 AML other m 2021-09-16T23:58:21.96
IV.RAFF.HHN. ML:2.3 0.000060450000000000006 0.46 AML other m 2021-09-16T23:58:24.23
IV.EMPL.HHN. ML:2.9 0.00027049999999999996 1.8 AML other m 2021-09-16T23:58:25.02
IV.ESCV.HHE. ML:2.4 0.00006505 0.24 AML other m 2021-09-16T23:58:26.32
IV.EMPL.HHE. ML:2.9 0.00023700000000000001 0.92 AML other m 2021-09-16T23:58:26.94
IV.EVRN.HHE. ML:2.5 0.00011865000000000001 0.42 AML other m 2021-09-16T23:58:27.27
IV.RAFF.HHE. ML:2.4 0.00008049999999999999 0.62 AML other m 2021-09-16T23:58:30.92
IV.ESCV.HHN. ML:2.4 0.0000691 1.08 AML other m 2021-09-16T23:58:32.55
IV.EPIT.HHE. ML:2.6 0.00013000000000000002 0.66 AML other m 2021-09-16T23:58:34.58
IV.GALF.HHN. ML:2.3 0.00005550000000000001 1.22 AML other m 2021-09-16T23:58:35.14
IV.EPIT.HHN. ML:2.9 0.00023249999999999999 0.68 AML other m 2021-09-16T23:58:36.87
IV.ESML.HHN. ML:2.1 0.00004704999999999999 1.06 AML other m 2021-09-16T23:58:37.79
IV.ESML.HHE. ML:2.2 0.000050799999999999995 0.88 AML other m 2021-09-16T23:58:41.29
IV.GALF.HHE. ML:2.3 0.000049600000000000006 0.6 AML other m 2021-09-16T23:58:44.72
IV.CAR1.HHN. ML:2.5 0.000031349999999999996 0.68 AML other m 2021-09-16T23:58:49.58
IV.CAR1.HHE. ML:2.4 0.000023600000000000004 0.4 AML other m 2021-09-16T23:58:52.24
IV.CET2.HHE. ML:2.6 0.0000367 0.42 AML other m 2021-09-16T23:58:55.04
IV.CET2.HHN. ML:2.8 0.0000524 1.24 AML other m 2021-09-16T23:58:56.78
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