Earthquake with magnitude of Md 2.4 on date 29-04-1985 and time 05:56:30 (Italy) in region 10 km SE Valtopina (PG)

A magnitude Md 2.4 earthquake occured in region: 10 km SE Valtopina (PG), on

  • 29-04-1985 03:56:30 (UTC)
  • 29-04-1985 05:56:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.85 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
Valtopina PG 11 1398 1398
Serravalle di Chienti MC 12 1070 2468
Foligno PG 12 57155 59623
Monte Cavallo MC 13 145 59768
Sellano PG 13 1079 60847
Nocera Umbra PG 14 5839 66686
Spello PG 14 8645 75331
Trevi PG 15 8469 83800
Pieve Torina MC 18 1458 85258
Muccia MC 19 915 86173
Sefro MC 19 422 86595
Montefalco PG 19 5679 92274
Campello sul Clitunno PG 20 2442 94716

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
51 Km NE of Terni (111501 inhabitants)
79 Km W of Teramo (54892 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
96 Km S of Fano (60888 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 2.4 1985-04-29
03:56:30
42.99 12.85 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-29 03:56:30 ± 0.704
Latitude 42.99 ± 0.03
Longitude 12.85 ± 0.09
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5609

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) 8211.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 215
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00559
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 5609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-04-29T03:56:53.50 10.0 undecidable manual SG 191 0.0056 1.06 0.1
--.PO9.Z. 1985-04-29T03:56:46.00 10.0 undecidable manual SG 170 0.0038 -0.15 0.9
--.MNS.Z. 1985-04-29T03:56:43.50 10.0 undecidable manual PG 191 0.0056 0.3 1.2
--.CM2.Z. 1985-04-29T03:56:42.80 10.0 undecidable manual SG 47 0.0026 0.9 0.4
--.PO9.Z. 1985-04-29T03:56:38.50 10.0 undecidable manual PG 170 0.0038 -1.07 0.4
--.CM2.Z. 1985-04-29T03:56:36.90 10.0 negative manual PG 47 0.0026 -0.22 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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