Earthquake with magnitude of ML 1.3 on date 02-03-2021 and time 12:23:42 (UTC) in region 2 km N Salaparuta (TP)

A magnitude ML 1.3 earthquake occured in region: 2 km N Salaparuta (TP), on

  • 02-03-2021 12:23:42 (UTC)
  • 02-03-2021 13:23:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.77, 13.01 at 30 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Salaparuta TP 2 1696 1696
Poggioreale TP 3 1494 3190
Montevago AG 8 3006 6196
Santa Margherita di Belice AG 9 6363 12559
Santa Ninfa TP 11 5043 17602
Partanna TP 12 10607 28209
Gibellina TP 13 4115 32324
Roccamena PA 15 1505 33829
Camporeale PA 16 3373 37202
Contessa Entellina PA 16 1766 38968
Sambuca di Sicilia AG 17 5877 44845
Salemi TP 19 10794 55639
Menfi AG 20 12592 68231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Mazara del Vallo (51718 inhabitants)
49 Km SW of Palermo (674435 inhabitants)
51 Km E of Marsala (83194 inhabitants)
51 Km SE of Trapani (68759 inhabitants)
56 Km SW of Bagheria (55387 inhabitants)
72 Km NW of Agrigento (59770 inhabitants)
98 Km W of Caltanissetta (63360 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-03-02
12:23:42
37.77 13.01 30 2021-03-02
12:44:44
Sala Sismica INGV-Roma 87627771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-02 12:23:42 ± 0.44
Latitude 37.77 ± 0.02
Longitude 13.01 ± 0.06
Depth (km) 30 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87627771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5084
Semi-minor axis of confidence ellipse (meter) 661
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 5080
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2671
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 87627771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-02 12:44:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ERC.EHZ. 2021-03-02T12:24:01.80 3.0 undecidable manual S 0
IV.ERC.EHZ. 2021-03-02T12:23:58.42 3.0 undecidable manual P 0
MN.CLTB.HHE. 2021-03-02T12:23:55.51 0.6 undecidable manual S 140 0.2545 133 0.63 42
IV.MBFT.HHE. 2021-03-02T12:23:53.48 0.1 undecidable manual S 346 0.1781 144 0.1 100
IV.MMGO.HHZ. 2021-03-02T12:23:52.23 0.3 undecidable manual S 193 0.1142 155 -0.19 74
IV.CRJA.HHZ. 2021-03-02T12:23:51.53 0.6 undecidable manual S 351 0.0288 174 -0.19 49
MN.CLTB.HHE. 2021-03-02T12:23:49.61 0.6 undecidable manual P 140 0.2545 133 -0.12 49
IV.SCIAC.HHZ. 2021-03-02T12:23:49.64 0.1 undecidable manual P 164 0.2671 131 -0.25 95
IV.MFNL.HHZ. 2021-03-02T12:23:48.82 0.3 undecidable manual P 284 0.071 164 0.78 62
IV.MMGO.HHZ. 2021-03-02T12:23:48.42 0.1 undecidable manual P 193 0.1142 155 0.12 99
IV.MBFT.HHE. 2021-03-02T12:23:48.74 0.1 undecidable manual P 346 0.1781 144 -0.12 98
IV.CRJA.HHZ. 2021-03-02T12:23:47.56 0.1 undecidable manual P 351 0.0288 174 -0.34 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRJA.HHN. ML:1.5 0.0001645 0.48 AML other m 2021-03-02T12:23:52.08
IV.MMGO.HHN. ML:1.2 8.14E-5 0.4 AML other m 2021-03-02T12:23:52.36
IV.MMGO.HHE. ML:1.1 5.505E-5 0.34 AML other m 2021-03-02T12:23:54.27
IV.CRJA.HHE. ML:1.5 0.0001545 0.82 AML other m 2021-03-02T12:23:55.52
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download