INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 3.0 on date 12-05-2018 and time 16:04:50 (Italy) in region Libya [Sea]

A magnitude ML 3.0 earthquake occured in region: Libya [Sea], on

  • 12-05-2018 14:04:50 (UTC)
  • 12-05-2018 16:04:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 34.38, 14.85 at 10 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 3.0 2018-05-12
14:04:50
34.38 14.85 10 2018-05-12
14:32:40
Sala Sismica INGV-Roma 56800011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-12 14:04:50 ± 0.63
Latitude 34.38 ± 0.04
Longitude 14.85 ± 0.14
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 56800011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12890
Semi-minor axis of confidence ellipse (meter) 4130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 12890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 333
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 3.97141
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:3

Field Value
Value 3
Uncertainty 0.1
Num. used stations 7
Type of magnitude ML
Reference to an origin 56800011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-12 14:32:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AIO.HHZ. 2018-05-12T14:06:27.31 0.6 undecidable manual S 5 3.6063 38 -0.89 28
IV.HLNI.HHZ. 2018-05-12T14:06:13.05 0.6 undecidable manual S 0 2.9705 38 0.05 47
IV.ALJA.HHZ. 2018-05-12T14:06:10.28 3.0 undecidable manual S -4.13 0
IV.SSY.HHZ. 2018-05-12T14:06:08.65 0.6 undecidable manual S 4 2.7861 38 0.07 50
IV.HMDC.HHZ. 2018-05-12T14:06:04.05 0.6 undecidable manual S 359 2.582 38 0.35 50
IV.EPOZ.HHZ. 2018-05-12T14:05:52.55 3.0 undecidable manual S -0.14 0
MN.CEL.HHZ. 2018-05-12T14:05:51.91 0.3 undecidable manual P 12 3.9714 38 0.09 45
IV.AIO.HHZ. 2018-05-12T14:05:46.64 0.3 undecidable manual P 5 3.6063 38 -0.13 54
IV.GALF.HHZ. 2018-05-12T14:05:44.59 0.6 undecidable manual P 356 3.341 38 1.49 23
IV.CMDO.HHZ. 2018-05-12T14:05:40.63 0.3 undecidable manual P 345 3.1962 38 -0.48 59
IV.HLNI.HHZ. 2018-05-12T14:05:37.13 0.6 positive manual P 0 2.9705 38 -0.86 37
IV.HAGA.HHZ. 2018-05-12T14:05:36.83 0.3 undecidable manual P 5 2.9174 38 -0.43 66
IV.SSY.HHZ. 2018-05-12T14:05:35.40 0.1 undecidable manual P 4 2.7861 38 -0.04 100
IV.MEU.SHZ. 2018-05-12T14:05:34.35 0.3 undecidable manual P 360 2.733 38 -0.36 71
IV.HMDC.HHZ. 2018-05-12T14:05:33.32 0.3 undecidable manual P 359 2.582 38 0.7 67
IV.HPAC.HHZ. 2018-05-12T14:05:30.17 0.6 undecidable manual P 4 2.3355 38 0.95 43
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CEL.HHE. ML:3.1 5.205E-5 0.72 AML other m 2018-05-12T14:06:40.28
IV.GALF.HHE. ML:0 7.294944E-5 0.5568 AML other m 2018-05-12T14:06:18.35
IV.GALF.HHN. ML:0 0.000104779765 0.6976 AML other m 2018-05-12T14:06:19.34
IV.MEU.SHN. ML:0 0.0001754441 0.3584 AML other m 2018-05-12T14:05:48.04
IV.MEU.SHE. ML:0 0.0001235023 0.3584 AML other m 2018-05-12T14:05:50.68
IV.HLNI.HHE. ML:2.9 7.7687395E-5 0.7232 AML other m 2018-05-12T14:06:13.87
IV.CMDO.HHE. ML:3 7.5995705E-5 0.8 AML other m 2018-05-12T14:06:31.81
IV.AIO.HHN. ML:2.9 4.8448375E-5 0.64 AML other m 2018-05-12T14:06:32.76
MN.CEL.HHN. ML:3 4.611335E-5 0.5952 AML other m 2018-05-12T14:06:54.34
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