Earthquake with magnitude of ML 1.7 on date 17-10-2020 and time 09:44:14 (Italy) in region 7 km N Troina (EN)

A magnitude ML 1.7 earthquake occured in region: 7 km N Troina (EN), on

  • 17-10-2020 07:44:14 (UTC)
  • 17-10-2020 09:44:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.85, 14.59 at 34 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Troina EN 7 9373 9373
Cerami EN 8 2006 11379
Capizzi ME 10 3176 14555
San Teodoro ME 10 1403 15958
CesarĂ² ME 11 2439 18397
Gagliano Castelferrato EN 16 3593 21990
San Fratello ME 18 3707 25697
Maniace CT 19 3765 29462

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km W of Acireale (52622 inhabitants)
58 Km NW of Catania (314555 inhabitants)
61 Km NE of Caltanissetta (63360 inhabitants)
92 Km NE of Gela (75827 inhabitants)
93 Km W of Messina (238439 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
98 Km E of Bagheria (55387 inhabitants)
100 Km N of Vittoria (63339 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 1.7 2020-10-17
07:44:14
37.85 14.59 35 2021-02-26
14:56:01
Bollettino Sismico Italiano INGV 84159131
Reviewed
Rev100
ML 1.8 2020-10-17
07:44:14
37.84 14.58 31 2020-10-17
07:50:44
Sala Sismica INGV-Roma 83839521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 07:44:14 ± 0.2
Latitude 37.85 ± 0.01
Longitude 14.59 ± 0.01
Depth (km) 35 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84159131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 970
Semi-minor axis of confidence ellipse (meter) 861
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.14029
Epicentral distance of station farthest from the epicenter (degree) 0.7914
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 84159131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-26 15:29:10

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 83839521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 07:50:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-10-17T07:44:41.45 0.3 undecidable manual S 151 0.7914 54 0.25 64
IV.RAFF.HHZ. 2020-10-17T07:44:38.32 0.3 undecidable manual S 196 0.652 111 0.9 54
IV.HLNI.HHZ. 2020-10-17T07:44:34.41 0.6 undecidable manual S 156 0.5495 115 -0.2 46
IV.CSLB.HHE. 2020-10-17T07:44:32.19 0.3 undecidable manual S 282 0.4272 122 0.75 61
IV.PLLN.EHE. 2020-10-17T07:44:30.67 0.3 undecidable manual S 292 0.3786 125 0.44 68
IV.SSY.HHZ. 2020-10-17T07:44:29.25 0.3 undecidable manual P 151 0.7914 54 -0.65 57
IV.PETRA.HHZ. 2020-10-17T07:44:29.28 0.3 undecidable manual S 268 0.3741 126 -0.84 56
IV.MUCR.HHZ. 2020-10-17T07:44:28.42 0.6 undecidable manual S 49 0.2959 133 0.09 48
IV.RAFF.HHZ. 2020-10-17T07:44:27.49 0.1 negative manual P 196 0.652 111 -0.23 88
IV.EPZF.HHZ. 2020-10-17T07:44:27.46 0.3 undecidable manual S 97 0.2131 143 0.79 59
IV.HLNI.HHZ. 2020-10-17T07:44:25.87 0.3 undecidable manual P 156 0.5495 115 -0.23 68
IV.MSFR.HHZ. 2020-10-17T07:44:25.59 0.6 undecidable manual S 1 0.1835 147 -0.57 45
IV.CSLB.HHE. 2020-10-17T07:44:24.05 0.3 undecidable manual P 282 0.4272 122 -0.21 69
IV.GALF.HHZ. 2020-10-17T07:44:24.83 0.6 undecidable manual S 187 0.1403 154 -0.69 43
IV.PETRA.HHZ. 2020-10-17T07:44:23.61 0.1 undecidable manual P 268 0.3741 126 0.1 97
IV.PLLN.EHE. 2020-10-17T07:44:23.82 0.1 undecidable manual P 292 0.3786 125 0.25 94
IV.MUCR.HHZ. 2020-10-17T07:44:22.46 0.1 undecidable manual P 49 0.2959 133 -0.01 99
IV.CAGR.HHE. 2020-10-17T07:44:22.17 0.3 undecidable manual P 197 0.2383 139 0.39 70
IV.MSFR.HHZ. 2020-10-17T07:44:21.29 0.1 undecidable manual P 1 0.1835 147 0.07 100
IV.EPZF.HHZ. 2020-10-17T07:44:21.57 0.3 undecidable manual P 97 0.2131 143 0.06 74
IV.GALF.HHZ. 2020-10-17T07:44:20.20 0.1 negative manual P 187 0.1403 154 -0.65 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.5 0.00117 0.56 AML other m 2020-10-17T07:44:25.68
IV.GALF.HHN. ML:2.1 0.000514 0.54 AML other m 2020-10-17T07:44:27.10
IV.MSFR.HHE. ML:1.4 8.17E-5 0.7 AML other m 2020-10-17T07:44:27.44
IV.EPZF.HHE. ML:1.8 0.000237 0.74 AML other m 2020-10-17T07:44:28.72
IV.EPZF.HHN. ML:1.9 0.0002525 0.38 AML other m 2020-10-17T07:44:29.54
IV.MSFR.HHN. ML:1.6 0.000143 0.52 AML other m 2020-10-17T07:44:30.69
IV.MUCR.HHE. ML:1.8 0.000165 0.4 AML other m 2020-10-17T07:44:31.25
IV.MUCR.HHN. ML:1.8 0.000181 0.84 AML other m 2020-10-17T07:44:32.24
IV.PETRA.HHE. ML:1.7 0.000115 0.42 AML other m 2020-10-17T07:44:35.05
IV.HLNI.HHN. ML:1.9 0.0001315 0.22 AML other m 2020-10-17T07:44:36.49
IV.HLNI.HHE. ML:1.7 9.02E-5 0.98 AML other m 2020-10-17T07:44:39.61
IV.SSY.HHE. ML:2.7 0.0005355 0.28 AML other m 2020-10-17T07:44:41.62
IV.PETRA.HHN. ML:1.7 0.0001155 0.72 AML other m 2020-10-17T07:44:43.94
IV.SSY.HHN. ML:2.9 0.0008215 0.88 AML other m 2020-10-17T07:44:47.59
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