Earthquake with magnitude of Md 2.3 on date 02-08-1987 and time 10:33:31 (Italy) in region 5 km NW Moggio Udinese (UD)

A magnitude Md 2.3 earthquake occured in region: 5 km NW Moggio Udinese (UD), on

  • 02-08-1987 08:33:31 (UTC)
  • 02-08-1987 10:33:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.4350, 13.1480 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Moggio Udinese UD 5 1714 1714
Resiutta UD 7 309 2023
Amaro UD 8 823 2846
Zuglio UD 10 595 3441
Arta Terme UD 10 2171 5612
Tolmezzo UD 11 10440 16052
Paularo UD 11 2623 18675
Cavazzo Carnico UD 11 1052 19727
Venzone UD 11 2117 21844
Verzegnis UD 13 863 22707
Chiusaforte UD 13 672 23379
Dogna UD 13 175 23554
Ligosullo UD 13 116 23670
Bordano UD 14 754 24424
Treppo Carnico UD 14 618 25042
Resia UD 14 1033 26075
Pontebba UD 15 1433 27508
Paluzza UD 15 2217 29725
Sutrio UD 15 1332 31057
Cercivento UD 16 679 31736
Lauco UD 16 729 32465
Villa Santina UD 17 2233 34698
Gemona del Friuli UD 18 10964 45662
Trasaghis UD 18 2227 47889
Montenars UD 20 538 48427

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km N of Udine (99169 inhabitants)
65 Km NE of Pordenone (51229 inhabitants)
100 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 2.3 1987-08-02
08:33:31
46.435 13.148 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 53219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-02 08:33:31 ± 0.074
Latitude 46.4350 ± 0.0080
Longitude 13.1480 ± 0.0062
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 53219

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) 1005.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00988
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 53219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:51:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CTI.Z. 1987-08-02T08:34:08.71 10.0 undecidable manual SN 250 1.0989 0.12 0.4
--.CTI.Z. 1987-08-02T08:33:53.20 10.0 undecidable manual PN 250 1.0989 -0.03 1.5
--.RBL.Z. 1987-08-02T08:33:43.30 10.0 undecidable manual SG 89 0.2886 0.3 0.1
--.FOI.Z. 1987-08-02T08:33:43.36 10.0 undecidable manual SG 302 0.2997 0.05 0.8
--.FOI.Z. 1987-08-02T08:33:38.44 10.0 undecidable manual PG 302 0.2997 -0.01 2.2
--.RBL.Z. 1987-08-02T08:33:38.13 10.0 undecidable manual PG 89 0.2886 -0.15 1.1
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