Earthquake with magnitude of Md 1.8 on date 09-12-2016 and time 11:21:55 (UTC) in region Confine Italia Svizzera (SVIZZERA)

A magnitude Md 1.8 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 09-12-2016 11:21:55 (UTC)
  • 09-12-2016 12:21:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.21, 7.26 at 5 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

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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 Md 1.8 2016-12-09
11:21:55
46.21 7.26 5 2017-05-15
03:25:43
Bollettino Sismico Italiano INGV 45316771
Rev 100 Md 1.8 2016-12-09
11:21:55
46.21 7.26 5 2016-12-09
11:30:42
Sala Sismica INGV-Roma 36146461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-12-09 11:21:55 ± 0.26
Latitude 46.21 ± 0.01
Longitude 7.26 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 45316771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1037
Semi-minor axis of confidence ellipse (meter) 893
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 303
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.16188
Epicentral distance of station farthest from the epicenter (degree) 0.75183
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude Md
Reference to an origin 36146461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-12-09 11:30:42

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude Md
Reference to an origin 45316771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-05-15 03:25:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2016-12-09T11:22:22.30 0.3 undecidable manual S 187 0.7518 50 0.29 64
IV.MRGE.HHZ. 2016-12-09T11:22:13.18 0.3 undecidable manual S 198 0.4578 50 -0.13 70
GU.LSD.HHZ. 2016-12-09T11:22:10.86 0.3 undecidable manual P 187 0.7518 50 -0.09 66
GU.REMY.HHZ. 2016-12-09T11:22:10.34 0.3 undecidable manual S 191 0.3759 96 -0.05 72
IV.MRGE.HHZ. 2016-12-09T11:22:05.81 0.1 undecidable manual P 198 0.4578 50 -0.12 94
GU.REMY.HHZ. 2016-12-09T11:22:04.39 0.3 negative manual P 191 0.3759 96 0.15 71
CH.DIX.HHZ. 2016-12-09T11:22:02.19 0.1 undecidable manual S 141 0.1619 104 -0.09 100
CH.DIX.HHZ. 2016-12-09T11:21:59.65 0.1 positive manual P 141 0.1619 104 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHZ. Md:1.5 14 END duration s
GU.REMY.HHZ. Md:1.7 16 END duration s
IV.MRGE.HHZ. Md:1.8 18 END duration s
GU.LSD.HHZ. Md:2.1 23 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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