INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.5 on date 18-03-2017 and time 20:37:41 (Italy) in region 6 km SE Maletto (CT)

A magnitude ML 1.5 earthquake occured in region: 6 km SE Maletto (CT), on

  • 18-03-2017 19:37:41 (UTC)
  • 18-03-2017 20:37:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.79, 14.92 at 32 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
Maletto CT 6 3920 3920
Bronte CT 7 19172 23092
Randazzo CT 10 10900 33992
Maniace CT 12 3765 37757
Santa Domenica Vittoria ME 15 980 38737
Adrano CT 16 36122 74859
Biancavilla CT 17 24007 98866
Moio Alcantara ME 17 717 99583
Ragalna CT 18 3924 103507
Roccella Valdemone ME 18 666 104173
Cesarò ME 19 2439 106612
Malvagna ME 19 733 107345
Milo CT 19 1087 108432
Santa Maria di Licodia CT 19 7641 116073
Zafferana Etnea CT 20 9517 125590

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of Acireale (52622 inhabitants)
35 Km NW of Catania (314555 inhabitants)
72 Km SW of Messina (238439 inhabitants)
73 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
88 Km NW of Siracusa (122291 inhabitants)
97 Km N of Ragusa (73313 inhabitants)
99 Km NE of Vittoria (63339 inhabitants)
100 Km NE of Gela (75827 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 Date and Time (UTC) Latitude Longitude Magnitude Depth (km) Author Location ID
Rev 100 2017-03-18
19:37:41
37.79 14.92 ML 1.5 32 Sala Sismica INGV-Roma 42611671
Best location and best magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-18 19:37:41 ± 0.25
Latitude 37.79 ± 0.01
Longitude 14.92 ± 0.01
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 42611671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 933
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.53959
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 42611671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-18 19:43:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GMB.BHZ. 2017-03-18T19:38:08.38 3.0 undecidable manual S -0.04 0
IV.HAGA.HHZ. 2017-03-18T19:37:53.15 0.3 undecidable manual P 159 0.5396 113 0.02 69
IV.HLNI.HHZ. 2017-03-18T19:37:51.56 0.1 undecidable manual P 185 0.4425 118 -0.07 93
IV.AIO.HHE. 2017-03-18T19:37:49.88 0.1 undecidable manual P 54 0.3085 129 0.17 93
IV.NOV.HHZ. 2017-03-18T19:37:49.58 0.3 undecidable manual P 36 0.2941 130 0.05 72
IV.GALF.HHZ. 2017-03-18T19:37:49.63 0.3 undecidable manual P 254 0.2869 131 0.2 70
IV.MUCR.HHZ. 2017-03-18T19:37:48.78 0.3 undecidable manual P 353 0.2545 134 -0.24 70
IV.EPZF.HHZ. 2017-03-18T19:37:46.96 0.1 undecidable manual P 306 0.0576 168 -0.37 94
IV.EMSG.HHZ. 2017-03-18T19:37:46.89 0.3 undecidable manual P 41 0.0405 171 -0.39 70
IV.MSFR.HHE. 2017-03-18T19:37:50.24 0.3 undecidable manual P 314 0.3534 124 -0.08 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GMB.BHE. ML:3 0.0009955 0.08 AML other m 2017-03-18T19:38:21.92
IV.GMB.BHN. ML:2.8 0.000607 1.4 AML other m 2017-03-18T19:38:22.90
IV.HLNI.HHE. ML:1.6 8.2E-5 0.14 AML other m 2017-03-18T19:37:59.28
IV.HLNI.HHN. ML:1.5 6.8E-5 0.62 AML other m 2017-03-18T19:38:00.68
IV.NOV.HHN. ML:1.4 7.6E-5 0.78 AML other m 2017-03-18T19:38:00.62
IV.NOV.HHE. ML:1.6 0.00010845 0.42 AML other m 2017-03-18T19:37:56.88
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