Earthquake with magnitude of Md 2.6 on date 15-06-1985 and time 13:37:28 (UTC) in region 3 km W Visso (MC)

A magnitude Md 2.6 earthquake occured in region: 3 km W Visso (MC), on

  • 15-06-1985 13:37:28 (UTC)
  • 15-06-1985 15:37:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.92, 13.06 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
Visso MC 3 1107 1107
Preci PG 5 724 1831
Ussita MC 7 444 2275
Castelsantangelo sul Nera MC 8 281 2556
Monte Cavallo MC 9 145 2701
Sellano PG 11 1079 3780
Fiordimonte MC 13 202 3982
Pieve Torina MC 14 1458 5440
Norcia PG 15 4957 10397
Fiastra MC 15 559 10956
Acquacanina MC 15 121 11077
Pievebovigliana MC 16 866 11943
Bolognola MC 16 142 12085
Cerreto di Spoleto PG 16 1075 13160
Muccia MC 18 915 14075
Serravalle di Chienti MC 19 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
96 Km NE of Viterbo (67173 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 2.6 1985-06-15
13:37:28
42.92 13.06 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 8559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-15 13:37:28 ± 0.448
Latitude 42.92 ± 0.02
Longitude 13.06 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 8559

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) 3755.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00664
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 8559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:12:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AM1.Z. 1985-06-15T13:37:55.50 10.0 undecidable manual SG 32 0.0066 1.63 0
--.AR1.Z. 1985-06-15T13:37:49.00 10.0 undecidable manual SG 351 0.0052 0.29 0.7
--.AM1.Z. 1985-06-15T13:37:43.00 10.0 positive manual PG 32 0.0066 0.01 2.2
--.AS1.Z. 1985-06-15T13:37:42.00 10.0 undecidable manual SG 295 0.0029 1.44 0
--.ALP.Z. 1985-06-15T13:37:42.60 10.0 undecidable manual SG 110 0.0036 -0.28 0.8
--.AR1.Z. 1985-06-15T13:37:39.50 10.0 undecidable manual PG 351 0.0052 -0.51 0.9
--.CM2.Z. 1985-06-15T13:37:38.10 10.0 undecidable manual SG 12 0.0024 -0.82 0.3
--.ALP.Z. 1985-06-15T13:37:36.90 10.0 undecidable manual PG 110 0.0036 0.25 1.3
--.AS1.Z. 1985-06-15T13:37:35.00 10.0 undecidable manual PG 295 0.0029 -0.31 1.3
--.CM2.Z. 1985-06-15T13:37:34.00 10.0 positive manual PG 12 0.0024 -0.36 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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