Earthquake with magnitude of Md 2.8 on date 04-05-1998 and time 10:40:33 (UTC) in region Confine Italia Slovenia (SLOVENIA)

A magnitude Md 2.8 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 04-05-1998 10:40:33 (UTC)
  • 04-05-1998 12:40:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.28, 13.77 at 0 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Drenchia UD 17 115 115
Grimacco UD 20 342 457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Udine (99169 inhabitants)
71 Km N of Trieste (204420 inhabitants)
93 Km E of Pordenone (51229 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 2.8
ML-VAX 1.7
1998-05-04
10:40:33
46.28 13.77 0 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 337319
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-05-04 10:40:33 ± 0.582
Latitude 46.28 ± 0.02
Longitude 13.77 ± 0.04
Depth (km) 0 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 337319

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) 3995.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 245
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00275
Epicentral distance of station farthest from the epicenter (degree) 0.02113
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 337319
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:15:58

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 337319
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
--.CTI.Z. 1998-05-04T10:41:22.00 10.0 undecidable manual SN 261 0.0134 -0.35 0.5
--.BR9.Z. 1998-05-04T10:41:14.00 10.0 undecidable manual PN 275 0.0211 0.32 1
--.VVI.Z. 1998-05-04T10:41:10.50 10.0 undecidable manual SG 252 0.0087 1.02 0.1
--.CTI.Z. 1998-05-04T10:41:02.13 10.0 undecidable manual PN 261 0.0134 0.31 1.3
--.FVI.Z. 1998-05-04T10:41:00.39 10.0 undecidable manual SG 294 0.0067 -1.3 0
--.TRI.Z. 1998-05-04T10:40:55.45 10.0 undecidable manual SG 180 0.0051 -0.45 0.6
--.VVI.Z. 1998-05-04T10:40:54.74 10.0 undecidable manual PG 252 0.0087 0.61 1
--.FVI.Z. 1998-05-04T10:40:49.49 10.0 undecidable manual PG 294 0.0067 -0.4 1.6
--.GE9.Z. 1998-05-04T10:40:49.90 10.0 undecidable manual SG 269 0.0039 -0.79 0.3
--.PTCC.Z. 1998-05-04T10:40:46.11 10.0 undecidable manual SG 292 0.0028 0.22 0.8
--.TRI.Z. 1998-05-04T10:40:46.27 10.0 undecidable manual PG 180 0.0051 -0.27 1.9
--.GE9.Z. 1998-05-04T10:40:43.49 10.0 undecidable manual PG 269 0.0039 -0.05 2.2
--.PTCC.Z. 1998-05-04T10:40:41.90 10.0 undecidable manual PG 292 0.0028 0.32 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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