Earthquake with magnitude of ML 1.8 on date 03-02-2020 and time 17:01:41 (Italy) in region 6 km S Troina (EN)

A magnitude ML 1.8 earthquake occured in region: 6 km S Troina (EN), on

  • 03-02-2020 16:01:41 (UTC)
  • 03-02-2020 17:01:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.74, 14.6 at 24 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
Troina EN 6 9373 9373
Gagliano Castelferrato EN 7 3593 12966
Regalbuto EN 10 7277 20243
Agira EN 11 8345 28588
Cerami EN 12 2006 30594
San Teodoro ME 15 1403 31997
CesarĂ² ME 16 2439 34436
Nissoria EN 16 3000 37436
Capizzi ME 17 3176 40612
Centuripe EN 18 5470 46082
Nicosia EN 18 13899 59981
Assoro EN 20 5191 65172

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km NW of Catania (314555 inhabitants)
52 Km W of Acireale (52622 inhabitants)
55 Km NE of Caltanissetta (63360 inhabitants)
81 Km NE of Gela (75827 inhabitants)
88 Km N of Vittoria (63339 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
97 Km NW of Siracusa (122291 inhabitants)
98 Km SW of Messina (238439 inhabitants)
98 Km N of Modica (54633 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 ML 1.8 2020-02-03
16:01:41
37.74 14.6 24 2020-02-03
16:11:33
Sala Sismica INGV-Roma 76168521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-03 16:01:41 ± 0.35
Latitude 37.74 ± 0.01
Longitude 14.60 ± 0.03
Depth (km) 24 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76168521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1971
Semi-minor axis of confidence ellipse (meter) 1791
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 1970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.54769
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76168521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-03 16:11:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-02-03T16:01:58.72 3.0 undecidable manual Pn -0.19 0
IV.HLNI.HHZ. 2020-02-03T16:01:57.86 0.6 undecidable manual S 151 0.4416 109 0.33 45
IV.MUCR.HHZ. 2020-02-03T16:01:55.31 0.3 undecidable manual S 35 0.3741 113 -0.34 68
IV.MSFR.HHZ. 2020-02-03T16:01:54.52 0.1 undecidable manual S 358 0.2977 120 0.89 75
IV.RAFF.HHZ. 2020-02-03T16:01:53.22 0.6 positive manual P 200 0.5477 105 0.8 38
IV.HLNI.HHZ. 2020-02-03T16:01:50.32 0.1 undecidable manual P 151 0.4416 109 -0.38 88
IV.MUCR.HHZ. 2020-02-03T16:01:49.22 0.1 undecidable manual P 35 0.3741 113 -0.39 90
IV.ESML.HHZ. 2020-02-03T16:01:48.12 0.1 undecidable manual P 118 0.2482 125 0.39 92
IV.GALF.HHZ. 2020-02-03T16:01:48.86 0.3 undecidable manual S 229 0.0387 169 0.04 77
IV.MSFR.HHZ. 2020-02-03T16:01:48.07 0.1 undecidable manual P 358 0.2977 120 -0.38 91
IV.EPZF.HHZ. 2020-02-03T16:01:47.34 0.1 undecidable manual P 66 0.2185 129 0.01 100
IV.GALF.HHZ. 2020-02-03T16:01:45.42 0.1 undecidable manual P 229 0.0387 169 -0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2 0.000699 0.74 AML other m 2020-02-03T16:01:49.56
IV.GALF.HHN. ML:2.1 0.0007645 1.64 AML other m 2020-02-03T16:01:51.13
IV.MUCR.HHE. ML:1.6 0.000117 0.42 AML other m 2020-02-03T16:01:55.52
IV.MUCR.HHN. ML:1.6 0.00012 0.5 AML other m 2020-02-03T16:01:55.63
IV.HLNI.HHN. ML:1.8 0.0001355 0.16 AML other m 2020-02-03T16:01:58.73
IV.ESML.HHN. ML:1.7 0.000192 0.92 AML other m 2020-02-03T16:01:59.22
IV.HLNI.HHE. ML:1.7 0.0001135 0.32 AML other m 2020-02-03T16:02:00.59
IV.ESML.HHE. ML:1.8 0.00026 0.56 AML other m 2020-02-03T16:02:04.76
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