Earthquake with magnitude of Md 2.0 on date 29-08-1999 and time 17:47:25 (Italy) in region 6 km SE Valtopina (PG)

A magnitude Md 2.0 earthquake occured in region: 6 km SE Valtopina (PG), on

  • 29-08-1999 15:47:25 (UTC)
  • 29-08-1999 17:47:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0170, 12.8090 at 8 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 7 1398 1398
Nocera Umbra PG 11 5839 7237
Foligno PG 11 57155 64392
Spello PG 11 8645 73037
Serravalle di Chienti MC 13 1070 74107
Monte Cavallo MC 16 145 74252
Trevi PG 16 8469 82721
Assisi PG 17 28299 111020
Sellano PG 17 1079 112099
Cannara PG 18 4305 116404
Sefro MC 19 422 116826
Bevagna PG 19 5081 121907
Montefalco PG 19 5679 127586
Pieve Torina MC 20 1458 129044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
52 Km N of Terni (111501 inhabitants)
83 Km W of Teramo (54892 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 Km S of Pesaro (94582 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 2.0 1999-08-29
15:47:25
43.017 12.809 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 372969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-08-29 15:47:25 ± 0.104
Latitude 43.0170 ± 0.0082
Longitude 12.8090 ± 0.0093
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 372969

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) 1182.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00437
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 372969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:50:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1999-08-29T15:47:43.78 10.0 undecidable manual SG 11 0.4884 0.13 0.4
--.NRCA.Z. 1999-08-29T15:47:37.17 10.0 undecidable manual SG 129 0.2886 0.09 0.6
--.ARV.Z. 1999-08-29T15:47:35.91 10.0 undecidable manual PG 11 0.4884 -0.12 1
--.SNTG.Z. 1999-08-29T15:47:35.53 10.0 undecidable manual SG 21 0.2553 -0.34 0.1
--.NRCA.Z. 1999-08-29T15:47:32.14 10.0 undecidable manual PG 129 0.2886 -0.1 1.5
--.SNTG.Z. 1999-08-29T15:47:31.79 10.0 undecidable manual PG 21 0.2553 0.25 0.5
--.ASS.Z. 1999-08-29T15:47:30.92 10.0 undecidable manual SG 291 0.1221 -0.19 0.4
--.ASS.Z. 1999-08-29T15:47:28.84 10.0 negative manual PG 291 0.1221 0.05 3.5
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