Earthquake with magnitude of ML 1.8 on date 11-03-2020 and time 09:17:16 (Italy) in region 1 km SE Gangi (PA)

A magnitude ML 1.8 earthquake occured in region: 1 km SE Gangi (PA), on

  • 11-03-2020 08:17:16 (UTC)
  • 11-03-2020 09:17:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.79, 14.22 at 6 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
Gangi PA 1 6811 6811
Geraci Siculo PA 9 1945 8756
Petralia Soprana PA 9 3360 12116
Petralia Sottana PA 11 2821 14937
Bompietro PA 11 1401 16338
Sperlinga EN 13 805 17143
Blufi PA 13 1029 18172
Castel di Lucio ME 13 1294 19466
San Mauro Castelverde PA 14 1701 21167
Alimena PA 14 2032 23199
Castellana Sicula PA 15 3411 26610
Nicosia EN 17 13899 40509
Polizzi Generosa PA 19 3407 43916
Castelbuono PA 19 8943 52859
Mistretta ME 20 4791 57650

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Caltanissetta (63360 inhabitants)
69 Km E of Bagheria (55387 inhabitants)
77 Km NE of Agrigento (59770 inhabitants)
81 Km N of Gela (75827 inhabitants)
83 Km E of Palermo (674435 inhabitants)
83 Km W of Catania (314555 inhabitants)
86 Km W of Acireale (52622 inhabitants)
98 Km N of Vittoria (63339 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
Rev 100 Md 1.8
ML 1.8
2020-03-11
08:17:16
37.79 14.22 6 2020-03-11
08:29:36
Sala Sismica INGV-Roma 77186271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-11 08:17:16 ± 0.5
Latitude 37.79 ± 0.02
Longitude 14.22 ± 0.03
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77186271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2440
Semi-minor axis of confidence ellipse (meter) 1572
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 2440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 279
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) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.36782
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 77186271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-11 08:29:36

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 77186271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-11 08:29:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ALJA.HHE. 2020-03-11T08:17:31.53 0.3 undecidable manual S 263 0.3678 99 0.5 63
IV.GIB.HHE. 2020-03-11T08:17:26.31 0.3 undecidable manual S 323 0.2464 103 -0.12 71
IV.PLLN.EHZ. 2020-03-11T08:17:25.47 0.3 undecidable manual S 344 0.2059 105 0.54 66
IV.ALJA.HHE. 2020-03-11T08:17:24.77 0.1 undecidable manual P 263 0.3678 99 -0.2 91
IV.GALF.HHZ. 2020-03-11T08:17:24.52 3.0 undecidable manual S -0.03 0
IV.CSLB.HHZ. 2020-03-11T08:17:23.77 0.3 undecidable manual S 319 0.1898 107 -0.55 65
IV.GIB.HHE. 2020-03-11T08:17:22.05 0.1 undecidable manual P 323 0.2464 103 -0.26 91
IV.PETRA.HHZ. 2020-03-11T08:17:21.19 0.6 undecidable manual S 296 0.089 123 0.44 46
IV.PLLN.EHZ. 2020-03-11T08:17:21.72 0.6 negative manual P 344 0.2059 105 0.27 47
IV.CSLB.HHZ. 2020-03-11T08:17:20.83 0.6 undecidable manual P 319 0.1898 107 -0.27 46
IV.PETRA.HHZ. 2020-03-11T08:17:19.10 0.1 negative manual P 296 0.089 123 0.06 100
IV.EPOZ.HHZ. 2020-03-11T08:17:19.85 3.0 positive manual P 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.2 0.00245 0.42 AML other m 2020-03-11T08:17:21.41
IV.PETRA.HHN. ML:2.1 0.00192 0.3 AML other m 2020-03-11T08:17:21.51
IV.PLLN.EHE. ML:1.4 0.000174 0.62 AML other m 2020-03-11T08:17:25.80
IV.PLLN.EHN. ML:1.6 0.0002485 1.24 AML other m 2020-03-11T08:17:26.71
IV.PETRA.HHZ. Md:1.6 16 END duration s
IV.CSLB.HHZ. Md:1.8 19 END duration s
IV.GIB.HHE. Md:1.9 22 END duration s
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