Earthquake with magnitude of Md 2.5 on date 20-07-1993 and time 23:31:26 (Italy) in region 6 km S Resia (UD)

A magnitude Md 2.5 earthquake occured in region: 6 km S Resia (UD), on

  • 20-07-1993 21:31:26 (UTC)
  • 20-07-1993 23:31:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.3200, 13.2990 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Resia UD 6 1033 1033
Lusevera UD 7 643 1676
Taipana UD 8 636 2312
Chiusaforte UD 10 672 2984
Resiutta UD 10 309 3293
Montenars UD 11 538 3831
Venzone UD 12 2117 5948
Moggio Udinese UD 13 1714 7662
Tarcento UD 13 9012 16674
Gemona del Friuli UD 13 10964 27638
Nimis UD 13 2740 30378
Magnano in Riviera UD 14 2336 32714
Artegna UD 14 2885 35599
Dogna UD 14 175 35774
Attimis UD 15 1805 37579
Bordano UD 15 754 38333
Amaro UD 17 823 39156
Trasaghis UD 18 2227 41383
Treppo Grande UD 18 1708 43091
Buja UD 18 6563 49654
Osoppo UD 18 2936 52590
Cassacco UD 18 2938 55528
Tricesimo UD 19 7600 63128
Faedis UD 19 2945 66073
Reana del Rojale UD 19 4966 71039

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Udine (99169 inhabitants)
64 Km NE of Pordenone (51229 inhabitants)
83 Km NW of Trieste (204420 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 2.5
ML-VAX 1.7
1993-07-20
21:31:26
46.32 13.299 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 191799
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-07-20 21:31:26 ± 0.147
Latitude 46.3200 ± 0.0177
Longitude 13.2990 ± 0.0155
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 191799

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) 2298.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.01052
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 191799
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:00:11

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 191799
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(km) Takeoff_angle Residual Weight
--.CTI.Z. 1993-07-20T21:32:06.81 10.0 undecidable manual SN 257 1.1655 0.77 0
--.TRI.Z. 1993-07-20T21:31:51.80 10.0 undecidable manual SG 151 0.6882 0.45 0.3
--.CTI.Z. 1993-07-20T21:31:48.78 10.0 undecidable manual PN 257 1.1655 -0.46 0.6
--.TRI.Z. 1993-07-20T21:31:40.50 10.0 undecidable manual PG 151 0.6882 -0.25 1.4
--.RBL.Z. 1993-07-20T21:31:35.27 10.0 undecidable manual SG 56 0.2109 0.32 0.6
--.RBL.Z. 1993-07-20T21:31:31.25 10.0 undecidable manual PG 56 0.2109 -0.04 2.2
--.GE9.Z. 1993-07-20T21:31:31.25 10.0 undecidable manual SG 249 0.1221 0.1 0.8
--.GE9.Z. 1993-07-20T21:31:29.17 10.0 undecidable manual PG 249 0.1221 0.09 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download