Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 01-08-2021 and time 21:05:15 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 2.2 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 01-08-2021 21:05:15 (UTC)
  • 01-08-2021 23:05:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.6280, 14.1980 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

An earthquake occurred to
86 Km NE of Bagheria (55387 inhabitants)
92 Km NE of Palermo (674435 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 2.2 2021-08-01
21:05:15		 38.6282 14.1985 10 2021-12-29
11:12:40		 Bollettino Sismico Italiano INGV 96861911
Reviewed
Rev100 		ML 2.3 2021-08-01
21:05:15		 38.6378 14.188 9 2021-08-01
21:12:06		 Sala Sismica INGV-Roma 93530751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-01 21:05:15 ± 0.29
Latitude 38.6282 ± 0.0135
Longitude 14.1985 ± 0.0127
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96861911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1480
Semi-minor axis of confidence ellipse (meter) 625
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 154
Circular confidence region, given by single value of horizontal uncertainty (meter) 1480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.15468
Epicentral distance of station farthest from the epicenter (degree) 1.75997
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 96861911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-10 15:52:13

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations 46
Type of magnitude ML
Reference to an origin 93530751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-01 21:12:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-08-01T21:05:45.27 0.3 undecidable manual P 95 195.36 38 -1.23 32
IV.GRIS.EHZ. 2021-08-01T21:05:44.75 0.3 undecidable manual P 49 188.367 38 -0.88 39
IV.SSY.HHZ. 2021-08-01T21:05:43.10 0.6 undecidable manual P 155 180.1863 38 -1.52 19
IV.CET2.HHZ. 2021-08-01T21:05:43.60 0.3 undecidable manual P 56 181.2852 38 -1.14 36
IV.CLTA.HHZ. 2021-08-01T21:05:43.11 0.3 undecidable manual P 187 164.4132 50 0.82 45
IV.HVZN.HHZ. 2021-08-01T21:05:41.77 0.6 undecidable manual P 164 167.1105 50 -0.93 28
IV.HCRL.HHZ. 2021-08-01T21:05:41.42 0.6 undecidable manual P 154 166.1115 50 -1.13 26
IV.RAFF.HHZ. 2021-08-01T21:05:40.66 0.6 undecidable manual P 175 156.621 50 -0.43 36
IV.HLNI.HHZ. 2021-08-01T21:05:39.89 0.6 undecidable manual P 157 153.735 50 -0.75 32
IV.JOPP.HHZ. 2021-08-01T21:05:38.43 0.3 undecidable manual P 90 146.2425 50 -1.06 43
IV.IVPL.HHZ. 2021-08-01T21:05:38.75 0.6 undecidable manual S 112 73.371 50 1.06 34
IV.IVGP.HHZ. 2021-08-01T21:05:38.06 0.6 undecidable manual S 111 70.9734 50 1.02 35
IV.CSLB.HHZ. 2021-08-01T21:05:37.86 0.6 undecidable manual S 189 77.5668 50 -0.95 35
IV.GIB.HHZ. 2021-08-01T21:05:37.93 0.6 undecidable manual S 192 72.372 50 0.52 43
IV.MSFR.HHZ. 2021-08-01T21:05:37.01 0.6 undecidable manual S 152 74.2701 50 -0.92 36
IV.MCPD.HHZ. 2021-08-01T21:05:37.12 0.6 undecidable manual S 140 72.9714 50 -0.46 43
IV.PLLN.EHZ. 2021-08-01T21:05:36.96 0.6 undecidable manual S 184 70.6737 50 0 48
IV.EMSG.HHZ. 2021-08-01T21:05:35.04 0.3 undecidable manual P 144 110.9001 50 0.99 49
IV.MSRU.HHZ. 2021-08-01T21:05:34.75 0.6 undecidable manual P 109 120.7902 50 -0.81 34
IV.RESU.HHZ. 2021-08-01T21:05:34.68 0.6 undecidable manual P 187 109.6125 50 0.84 35
IV.GALF.HHZ. 2021-08-01T21:05:34.06 0.3 undecidable manual P 162 106.7154 50 0.66 56
IV.ALJA.HHZ. 2021-08-01T21:05:33.98 0.6 undecidable manual P 202 104.9172 50 0.85 35
IV.EPZF.HHZ. 2021-08-01T21:05:33.77 0.3 undecidable manual P 147 106.116 50 0.47 60
IV.MPG.HHZ. 2021-08-01T21:05:31.02 0.6 undecidable manual P 235 89.4438 50 0.29 43
IV.IST3.HHZ. 2021-08-01T21:05:31.78 0.6 undecidable manual P 78 91.3419 50 0.75 37
IV.USI.HHZ. 2021-08-01T21:05:30.86 0.6 undecidable manual P 276 88.7445 50 0.23 44
IV.SOLUN.HHZ. 2021-08-01T21:05:30.00 0.3 undecidable manual P 224 83.0502 50 0.25 66
IV.IVPL.HHZ. 2021-08-01T21:05:28.60 0.3 undecidable manual P 112 73.371 50 0.34 66
IV.IVUG.HHZ. 2021-08-01T21:05:28.47 0.6 undecidable manual P 110 73.0713 50 0.26 45
IV.ILOS.HNZ. 2021-08-01T21:05:28.43 0.6 undecidable manual P 107 68.1762 50 0.97 35
IV.CSLB.HHZ. 2021-08-01T21:05:28.47 0.3 undecidable manual P 189 77.5668 50 -0.44 64
IV.IVGP.HHZ. 2021-08-01T21:05:28.19 0.3 undecidable manual P 111 70.9734 50 0.29 67
IV.PLLN.EHZ. 2021-08-01T21:05:27.91 0.3 undecidable manual P 184 70.6737 50 0.06 71
IV.MSFR.HHZ. 2021-08-01T21:05:27.79 0.3 undecidable manual P 152 74.2701 50 -0.61 61
IV.MCPD.HHZ. 2021-08-01T21:05:27.73 0.3 undecidable manual P 140 72.9714 50 -0.47 64
IV.GIB.HHZ. 2021-08-01T21:05:27.93 0.3 undecidable manual P 192 72.372 50 -0.17 69
IV.IFIL.HHZ. 2021-08-01T21:05:27.36 0.6 undecidable manual S 102 33.4443 50 0.34 48
IV.IFIL.HHZ. 2021-08-01T21:05:22.57 0.3 undecidable manual P 102 33.4443 50 0.46 69
IV.IACL.HHZ. 2021-08-01T21:05:21.95 0.3 undecidable manual S 128 17.1717 120 -0.33 73
IV.IACL.HHZ. 2021-08-01T21:05:19.60 0.1 positive manual P 128 17.1717 120 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IACL.HHE. ML:2.8 0.0053100000000000005 0.12 AML other m 2021-08-01T21:05:23.70
IV.IACL.HHN. ML:2.8 0.004940000000000001 0.8 AML other m 2021-08-01T21:05:25.69
IV.IFIL.HHE. ML:3.0 0.0047 0.22 AML other m 2021-08-01T21:05:28.42
IV.IFIL.HHN. ML:2.7 0.002115 0.94 AML other m 2021-08-01T21:05:28.76
IV.CSLB.HHE. ML:2.0 0.00014000000000000001 0.76 AML other m 2021-08-01T21:05:38.89
IV.JOPP.HHE. ML:2.0 0.0000589 0.64 AML other m 2021-08-01T21:05:38.66
IV.CSLB.HHN. ML:2.0 0.000142 0.96 AML other m 2021-08-01T21:05:39.69
IV.PLLN.EHE. ML:2.4 0.00046499999999999997 0.92 AML other m 2021-08-01T21:05:39.64
IV.GIB.HHE. ML:2.4 0.0004375 0.4 AML other m 2021-08-01T21:05:40.32
IV.MSFR.HHE. ML:1.7 0.00007345 0.7 AML other m 2021-08-01T21:05:40.18
IV.MCPD.HHN. ML:2.3 0.0003115 0.4 AML other m 2021-08-01T21:05:40.41
IV.PLLN.EHN. ML:2.4 0.0004555 0.44 AML other m 2021-08-01T21:05:40.66
IV.GIB.HHN. ML:2.3 0.00031800000000000003 0.44 AML other m 2021-08-01T21:05:42.54
IV.MCPD.HHE. ML:2.0 0.000141 0.72 AML other m 2021-08-01T21:05:42.39
IV.MSFR.HHN. ML:1.8 0.00009705 0.36 AML other m 2021-08-01T21:05:43.37
IV.CET2.HHE. ML:2.0 0.000035100000000000006 0.76 AML other m 2021-08-01T21:05:44.50
IV.CET2.HHN. ML:2.2 0.000056099999999999995 0.74 AML other m 2021-08-01T21:05:45.52
IV.ALJA.HHN. ML:2.2 0.00014150000000000002 0.62 AML other m 2021-08-01T21:05:51.45
IV.ALJA.HHE. ML:2.3 0.000178 0.88 AML other m 2021-08-01T21:05:51.51
IV.EPZF.HHE. ML:2.3 0.000189 0.36 AML other m 2021-08-01T21:05:53.70
IV.RESU.HHN. ML:2.2 0.00014749999999999998 1.14 AML other m 2021-08-01T21:05:53.82
IV.GALF.HHE. ML:2.4 0.000257 1.2 AML other m 2021-08-01T21:05:53.31
IV.EPZF.HHN. ML:2.6 0.00035999999999999997 0.38 AML other m 2021-08-01T21:05:54.32
IV.JOPP.HHN. ML:2.2 0.00007369999999999999 0.88 AML other m 2021-08-01T21:05:54.96
IV.GALF.HHN. ML:2.4 0.000244 1.58 AML other m 2021-08-01T21:05:55.80
IV.RESU.HHE. ML:2.0 0.00008549999999999999 0.46 AML other m 2021-08-01T21:05:57.12
IV.HLNI.HHE. ML:2.0 0.0000436 0.58 AML other m 2021-08-01T21:05:59.10
IV.HLNI.HHN. ML:1.9 0.0000424 0.98 AML other m 2021-08-01T21:06:01.01
IV.RAFF.HHE. ML:2.2 0.00007475 0.8 AML other m 2021-08-01T21:06:03.04
IV.HVZN.HHE. ML:2.4 0.0001024 0.38 AML other m 2021-08-01T21:06:04.79
IV.CLTA.HHN. ML:2.1 0.000050549999999999995 0.42 AML other m 2021-08-01T21:06:05.32
IV.CLTA.HHE. ML:2.2 0.0000637 1.1 AML other m 2021-08-01T21:06:06.33
IV.HCRL.HHE. ML:2.1 0.000049449999999999996 0.54 AML other m 2021-08-01T21:06:06.36
IV.RAFF.HHN. ML:2.0 0.000043249999999999994 0.8 AML other m 2021-08-01T21:06:07.26
IV.HVZN.HHN. ML:2.5 0.0001385 1.04 AML other m 2021-08-01T21:06:08.62
IV.SSY.HHN. ML:2.9 0.000279 0.24 AML other m 2021-08-01T21:06:09.75
IV.HCRL.HHN. ML:1.9 0.00003365 1.12 AML other m 2021-08-01T21:06:10.19
IV.SSY.HHE. ML:2.6 0.000132 0.36 AML other m 2021-08-01T21:06:11.63
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