Earthquake with magnitude of Md 2.8 on date 30-04-1998 and time 05:20:10 (Italy) in region Confine Italia Slovenia (SLOVENIA)

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

  • 30-04-1998 03:20:10 (UTC)
  • 30-04-1998 05:20:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.26, 13.68 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 11 115 115
Grimacco UD 13 342 457
Savogna UD 16 411 868
Stregna UD 17 356 1224
Pulfero UD 18 962 2186
San Leonardo UD 20 1129 3315

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NE of Udine (99169 inhabitants)
69 Km N of Trieste (204420 inhabitants)
86 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 1.8
1998-04-30
03:20:10
46.26 13.68 1 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 336919
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-30 03:20:10 ± 0.531
Latitude 46.26 ± 0.02
Longitude 13.68 ± 0.04
Depth (km) 1 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 336919

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) 3854.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 231
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.01271
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 336919
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:15:35

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 336919
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. 1998-04-30T03:21:00.29 10.0 undecidable manual SN! 261 0.0127 3.14 0
--.CTI.Z. 1998-04-30T03:20:38.76 10.0 undecidable manual PN 261 0.0127 1.4 0.1
--.FVI.Z. 1998-04-30T03:20:36.25 10.0 undecidable manual SG 298 0.0062 -0.28 0.5
--.TRI.Z. 1998-04-30T03:20:31.64 10.0 undecidable manual SG 173 0.0049 -0.16 0.6
--.FVI.Z. 1998-04-30T03:20:24.75 10.0 undecidable manual PG 298 0.0062 -0.71 0.7
--.GE9.Z. 1998-04-30T03:20:24.59 10.0 undecidable manual SG 272 0.0033 -0.09 0.6
--.TRI.Z. 1998-04-30T03:20:22.58 10.0 undecidable manual PG 173 0.0049 -0.14 1.5
--.PTCC.Z. 1998-04-30T03:20:20.84 10.0 undecidable manual SG 302 0.0023 0.32 0.5
--.GE9.Z. 1998-04-30T03:20:18.40 10.0 positive manual PG 272 0.0033 -0.21 2.9
--.PTCC.Z. 1998-04-30T03:20:16.23 10.0 undecidable manual PG 302 0.0023 0.02 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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