Earthquake with magnitude of ML 2.1 on date 04-08-2020 and time 17:23:51 (UTC) in region Tirreno Meridionale (MARE)

A magnitude ML 2.1 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 04-08-2020 17:23:51 (UTC)
  • 04-08-2020 19:23:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.4800, 15.2900 at 135 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.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of Messina (238439 inhabitants)
51 Km NW of Reggio di Calabria (183035 inhabitants)
97 Km N of Acireale (52622 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 2.1 2020-08-04
17:23:51
38.4798 15.2898 135 2020-11-19
12:36:57
Bollettino Sismico Italiano INGV 81848461
Reviewed
Rev100
ML 2.1 2020-08-04
17:23:51
38.4993 15.2822 132 2020-08-04
17:35:38
Sala Sismica INGV-Roma 81650121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-04 17:23:51 ± 0.29
Latitude 38.4798 ± 0.0261
Longitude 15.2898 ± 0.0184
Depth (km) 135 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81848461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2979
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 2980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.89932
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 81650121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-04 17:35:38

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 81848461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-10 15:05:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2020-08-04T17:24:30.57 0.3 undecidable manual S 92 99.8223 141 0.17 69
IV.SOI.EHZ. 2020-08-04T17:24:28.35 0.6 undecidable manual S 124 80.364 147 0.43 45
MN.CEL.HHZ. 2020-08-04T17:24:25.74 0.6 undecidable manual S 115 57.8976 155 0.18 50
IV.JOPP.HHZ. 2020-08-04T17:24:24.81 0.6 undecidable manual S 75 53.6019 157 -0.37 48
IV.ESML.HHZ. 2020-08-04T17:24:24.35 3.0 undecidable manual Sn -4.81 0
IV.MSRU.HHZ. 2020-08-04T17:24:23.29 0.6 undecidable manual S 142 30.5472 166 -0.3 51
IV.IVUG.HHE. 2020-08-04T17:24:23.64 0.3 undecidable manual S 251 27.9498 167 0.17 79
IV.MPNC.HHE. 2020-08-04T17:24:23.89 0.6 undecidable manual S 172 37.3293 163 -0.09 53
IV.PLAC.HHZ. 2020-08-04T17:24:14.08 0.1 negative manual P 92 99.8223 141 0.33 89
XK.GIZZ.HHZ. 2020-08-04T17:24:14.94 3.0 negative manual P 0.13 0
IV.ENIC.HHZ. 2020-08-04T17:24:13.44 0.3 undecidable manual P 194 97.0251 141 -0.09 70
IV.SOI.EHZ. 2020-08-04T17:24:12.12 0.3 undecidable manual P 124 80.364 147 -0.2 71
IV.NOV.HHZ. 2020-08-04T17:24:11.02 0.3 undecidable manual P 195 51.9036 157 0.37 72
MN.CEL.HHZ. 2020-08-04T17:24:10.53 0.3 undecidable manual P 115 57.8976 155 -0.42 71
IV.JOPP.HHZ. 2020-08-04T17:24:10.57 0.3 undecidable manual P 75 53.6019 157 -0.16 75
IV.IVUG.HHE. 2020-08-04T17:24:10.10 0.3 undecidable manual P 251 27.9498 167 0.35 76
IV.IVPL.HHE. 2020-08-04T17:24:09.92 0.3 undecidable manual P 247 29.2485 167 0.14 79
IV.MSRU.HHZ. 2020-08-04T17:24:09.44 0.1 negative manual P 142 30.5472 166 -0.38 100
IV.MPNC.HHE. 2020-08-04T17:24:09.92 0.3 undecidable manual P 172 37.3293 163 -0.12 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MSRU.HHE. ML:2.5 0.000185336265 1.616 AML other m 2020-08-04T17:24:24.94
IV.MSRU.HHN. ML:2.3 0.00011947095 1.344 AML other m 2020-08-04T17:24:25.69
IV.JOPP.HHN. ML:2.0 0.000059355555 0.9376 AML other m 2020-08-04T17:24:26.56
IV.JOPP.HHE. ML:2.0 0.000058677024999999996 0.384 AML other m 2020-08-04T17:24:26.41
MN.CEL.HHN. ML:2.0 0.000052018015000000003 0.768 AML other m 2020-08-04T17:24:27.12
IV.SOI.EHN. ML:1.7 0.000026405169999999997 0.768 AML other m 2020-08-04T17:24:27.37
MN.CEL.HHE. ML:2.0 0.00004993915 1.4624 AML other m 2020-08-04T17:24:29.85
IV.SOI.EHE. ML:1.9 0.000036332415 1.4624 AML other m 2020-08-04T17:24:29.88
IV.PLAC.HHN. ML:2.2 0.000057567375000000005 0.3328 AML other m 2020-08-04T17:24:31.81
IV.PLAC.HNN. ML:2.2 0.000057758619999999994 0.3072 AML other m 2020-08-04T17:24:32.19
IV.PLAC.HHE. ML:2.2 0.000065207585 0.4352 AML other m 2020-08-04T17:24:33.59
IV.PLAC.HNE. ML:2.2 0.0000719988 0.6912 AML other m 2020-08-04T17:24:33.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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