Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 29-10-2020 and time 21:15:55 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 1.5 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 29-10-2020 20:15:55 (UTC)
  • 29-10-2020 21:15:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.5490, 13.3870 at 7 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
48 Km N of Palermo (674435 inhabitants)
53 Km N of Bagheria (55387 inhabitants)
96 Km NE of Trapani (68759 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 1.5 2020-10-29
20:15:55		 38.5488 13.3872 7 2021-02-26
14:56:05		 Bollettino Sismico Italiano INGV 84697131
Reviewed
Rev100 		ML 1.7 2020-10-29
20:15:56		 38.5573 13.3833 11 2020-10-29
20:31:52		 Sala Sismica INGV-Roma 84244331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-29 20:15:55 ± 0.44
Latitude 38.5488 ± 0.0351
Longitude 13.3872 ± 0.0172
Depth (km) 7 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84697131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3769
Semi-minor axis of confidence ellipse (meter) 1488
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 352
Circular confidence region, given by single value of horizontal uncertainty (meter) 3770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
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) 0.51
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.07559
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 84697131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-05 12:03:31

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 84244331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-29 20:31:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-10-29T20:17:44.88 3.0 undecidable manual Sn -0.08 0
IV.MTMR.EHZ. 2020-10-29T20:17:01.05 3.0 undecidable manual Sn 0.02 0
IV.ERC.EHE. 2020-10-29T20:16:23.05 0.6 undecidable manual S 231 89.8434 50 -0.08 44
IV.CSLB.HHZ. 2020-10-29T20:16:23.70 0.6 undecidable manual S 139 89.5437 50 0.65 38
IV.MBFT.HHZ. 2020-10-29T20:16:20.39 0.6 undecidable manual S 210 76.7676 50 0.73 38
IV.SCIAR.HNE. 2020-10-29T20:16:20.43 0.6 undecidable manual S 155 74.4699 50 1.39 28
IV.MSFR.HHZ. 2020-10-29T20:16:15.43 0.3 undecidable manual P 118 119.3916 50 -0.75 52
IV.IFIL.HHE. 2020-10-29T20:16:13.70 0.3 undecidable manual P 89 103.119 50 0.04 65
IV.CSLB.HHZ. 2020-10-29T20:16:11.25 0.3 undecidable manual P 139 89.5437 50 -0.32 63
IV.PLLN.EHN. 2020-10-29T20:16:11.81 0.3 undecidable manual P 133 90.243 50 0.13 66
IV.ERC.EHE. 2020-10-29T20:16:10.86 0.3 undecidable manual P 231 89.8434 50 -0.76 55
IV.GIB.HHE. 2020-10-29T20:16:10.86 0.3 undecidable manual P 138 83.25 50 0.25 65
IV.MBFT.HHZ. 2020-10-29T20:16:10.33 0.3 undecidable manual P 210 76.7676 50 0.72 57
IV.IACL.HHZ. 2020-10-29T20:16:10.52 0.3 undecidable manual P 91 83.9493 50 -0.2 65
IV.SCIAR.HNE. 2020-10-29T20:16:09.82 0.3 undecidable manual P 155 74.4699 50 0.56 61
IV.MPG.HHZ. 2020-10-29T20:16:09.61 0.6 undecidable manual S 183 43.0236 50 -1.03 35
IV.USI.HHZ. 2020-10-29T20:16:05.36 0.6 undecidable manual S 314 25.2525 106 0.34 47
IV.MPG.HHZ. 2020-10-29T20:16:02.87 0.3 undecidable manual P 183 43.0236 50 -1.54 40
IV.USI.HHZ. 2020-10-29T20:16:01.22 0.1 negative manual P 314 25.2525 106 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.USI.HHN. ML:2.1 0.00074906385 0.1664 AML other m 2020-10-29T20:16:07.06
IV.USI.HHE. ML:1.7 0.00028376015 0.7424 AML other m 2020-10-29T20:16:07.06
IV.MBFT.HHE. ML:1.4 0.00003614986 0.3072 AML other m 2020-10-29T20:16:21.47
IV.MBFT.HHN. ML:1.6 0.000056625655 0.3968 AML other m 2020-10-29T20:16:22.70
IV.CSLB.HHN. ML:1.2 0.000021268494999999998 1.2416 AML other m 2020-10-29T20:16:25.40
IV.CSLB.HHE. ML:1.4 0.000029348635 0.9728 AML other m 2020-10-29T20:16:26.89
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