Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 24-12-2017 and time 19:08:21 (Italy) in region Mar Ionio Meridionale (MARE)

A magnitude ML 2.0 earthquake occured in region: Mar Ionio Meridionale (MARE), on

  • 24-12-2017 18:08:21 (UTC)
  • 24-12-2017 19:08:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 36.8910, 16.0300 at 31 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.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km E of Siracusa (122291 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 2.0 2017-12-24
18:08:21		 36.8907 16.03 31 2018-09-04
09:10:40		 Bollettino Sismico Italiano INGV 53138801
Reviewed
Rev100 		ML 2.0 2017-12-24
18:08:20		 36.9207 16.0997 10 2017-12-24
18:17:55		 Sala Sismica INGV-Roma 52782541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-24 18:08:21 ± 0.43
Latitude 36.8907 ± 0.0108
Longitude 16.0300 ± 0.0236
Depth (km) 31 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53138801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1995
Semi-minor axis of confidence ellipse (meter) 942
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 2000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 317
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.02972
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 52782541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-24 18:17:55

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 53138801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-07-27 14:20:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTRA.EHZ. 2017-12-24T18:09:51.04 3.0 undecidable manual Pn 1.09 0
IV.T1299.EHZ. 2017-12-24T18:09:48.20 3.0 positive manual Pn -0.61 0
IV.MF5.EHZ. 2017-12-24T18:09:44.09 3.0 undecidable manual Pn -8.62 0
IV.LIK.EHZ.01 2017-12-24T18:09:30.81 3.0 undecidable manual Pn -2.58 0
AC.VLO.HHZ. 2017-12-24T18:09:25.44 3.0 undecidable manual Pg 0.16 0
IV.MMGO.HHZ. 2017-12-24T18:08:59.67 3.0 undecidable manual Pn -1.18 0
IV.HMDC.HHZ. 2017-12-24T18:08:53.76 0.6 undecidable manual S 274 110.8002 54 0.43 60
IV.HLNI.HHZ. 2017-12-24T18:08:53.84 0.3 undecidable manual S 297 114.2967 54 -0.24 92
IV.SSY.HHZ. 2017-12-24T18:08:48.53 0.3 undecidable manual S 290 89.7435 104 0.4 92
IV.HAGA.HHZ. 2017-12-24T18:08:47.61 0.6 undecidable manual S 300 88.9443 104 -0.32 65
IV.HPAC.HHZ. 2017-12-24T18:08:47.87 0.6 undecidable manual S 257 90.4428 104 -0.46 62
IV.HMDC.HHZ. 2017-12-24T18:08:39.86 0.3 undecidable manual P 274 110.8002 54 0.17 94
IV.HLNI.HHZ. 2017-12-24T18:08:39.87 0.3 undecidable manual P 297 114.2967 54 -0.26 92
IV.HPAC.HHZ. 2017-12-24T18:08:37.04 0.3 undecidable manual P 257 90.4428 104 0.23 96
IV.SSY.HHZ. 2017-12-24T18:08:36.81 0.3 undecidable manual P 290 89.7435 104 0.12 98
IV.HAGA.HHZ. 2017-12-24T18:08:36.43 0.3 undecidable manual P 300 88.9443 104 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HPAC.HHN. ML:2.3 0.0002036032 0.384 AML other m 2017-12-24T18:08:49.27
IV.HMDC.HHE. ML:1.9 0.00006951478999999999 0.1408 AML other m 2017-12-24T18:08:54.26
IV.HMDC.HHN. ML:2.0 0.00009083897 0.2048 AML other m 2017-12-24T18:08:54.34
IV.SSY.HHE. ML:1.9 0.000090437055 0.1408 AML other m 2017-12-24T18:08:54.53
IV.SSY.HHN. ML:2.2 0.00016890305 0.3584 AML other m 2017-12-24T18:08:54.39
IV.HLNI.HHE. ML:1.9 0.000058943245000000005 0.1024 AML other m 2017-12-24T18:08:55.20
IV.HLNI.HHN. ML:1.7 0.000041857215000000004 0.1024 AML other m 2017-12-24T18:08:56.01
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
Waveforms Seismic signals in miniseed + resp format Download