Earthquake with magnitude of Md 3.3 on date 31-05-2002 and time 18:50:35 (Italy) in region Svizzera (SVIZZERA)

A magnitude Md 3.3 earthquake occured in region: Svizzera (SVIZZERA), on

  • 31-05-2002 16:50:35 (UTC)
  • 31-05-2002 18:50:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.35, 7.12 at 10 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
Bulletin
Rev1000
Md 3.3
ML-VAX 2.7
2002-05-31
16:50:35
46.35 7.12 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 442279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-05-31 16:50:35 ± 0.903
Latitude 46.35 ± 0.05
Longitude 7.12 ± 0.09
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 442279

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 8400.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 267
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00639
Epicentral distance of station farthest from the epicenter (degree) 0.04638
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

Md:3.3

Field Value
Value 3.3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 442279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:58:07

ML:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 18
Type of magnitude ML
Reference to an origin 442279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SNTG.Z. 2002-05-31T16:51:51.90 10.0 undecidable manual PN 125 0.0464 -0.43 1.1
--.ARV.Z. 2002-05-31T16:51:50.13 10.0 undecidable manual PN 123 0.0451 -0.18 1.4
--.ASS.Z. 2002-05-31T16:51:50.92 10.0 undecidable manual PN 128 0.0461 -0.91 0.5
--.FSSB.Z. 2002-05-31T16:51:46.98 10.0 undecidable manual PN 122 0.0431 -0.42 1.2
--.CRE.Z. 2002-05-31T16:51:40.81 10.0 undecidable manual PN 127 0.0393 -0.72 0.8
--.BRMO.Z. 2002-05-31T16:51:40.59 10.0 undecidable manual SN! 86 0.0202 1.18 0
--.PTCC.Z. 2002-05-31T16:51:39.93 10.0 undecidable manual PN 87 0.0387 -0.63 1
--.SFI.Z. 2002-05-31T16:51:39.30 10.0 undecidable manual PN 125 0.0372 1.02 0.4
--.CSNT.Z. 2002-05-31T16:51:38.18 10.0 undecidable manual PN 133 0.0371 0.08 1.6
--.PGD.Z. 2002-05-31T16:51:37.71 10.0 undecidable manual PN 126 0.0367 0.17 1.6
--.FVI.Z. 2002-05-31T16:51:35.21 10.0 undecidable manual PN 84 0.0351 0.06 1.7
--.DOI.Z. 2002-05-31T16:51:29.39 10.0 undecidable manual SN 177 0.0166 -0.44 0.6
--.PII.Z. 2002-05-31T16:51:29.70 10.0 undecidable manual PN 136 0.0321 -0.71 0.9
--.BDI.Z. 2002-05-31T16:51:28.36 10.0 undecidable manual PN 132 0.0301 0.85 0.8
--.GSCL.Z. 2002-05-31T16:51:26.16 10.0 undecidable manual PN 128 0.0283 1.38 0.2
--.CTI.Z. 2002-05-31T16:51:24.72 10.0 undecidable manual PN 94 0.0283 -0.06 1.9
--.IMI.Z. 2002-05-31T16:51:16.14 10.0 undecidable manual PN 167 0.0224 0.34 1.7
--.SAL.Z. 2002-05-31T16:51:15.37 10.0 undecidable manual PN 106 0.0223 -0.21 1.8
--.BOB.Z. 2002-05-31T16:51:13.53 10.0 undecidable manual PN 133 0.0204 0.83 0.8
--.BRMO.Z. 2002-05-31T16:51:12.84 10.0 undecidable manual PN 86 0.0202 0.46 1.5
--.FIN.Z. 2002-05-31T16:51:11.99 10.0 undecidable manual PN 160 0.0204 -0.73 1
--.DOI.Z. 2002-05-31T16:51:07.60 10.0 undecidable manual PN 177 0.0166 0.2 1.8
--.ORO.Z. 2002-05-31T16:51:00.38 10.0 undecidable manual SG! 140 0.0084 -7.12 0
--.VAI.Z. 2002-05-31T16:50:53.85 10.0 undecidable manual PN! 112 0.0112 -4.74 0
--.ORO.Z. 2002-05-31T16:50:48.75 10.0 undecidable manual PG! 140 0.0084 -5.21 0
--.MCGN.Z. 2002-05-31T16:50:44.31 10.0 positive manual PG! 123 0.0064 -5.59 0
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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