Earthquake with magnitude of Md 2.1 on date 09-06-1999 and time 23:20:10 (Italy) in region 7 km SW Apecchio (PU)

A magnitude Md 2.1 earthquake occured in region: 7 km SW Apecchio (PU), on

  • 09-06-1999 21:20:10 (UTC)
  • 09-06-1999 23:20:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5100, 12.3740 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
Apecchio PU 7 1882 1882
Pietralunga PG 9 2111 3993
CittĂ  di Castello PG 12 39913 43906
Piobbico PU 14 2029 45935
Mercatello sul Metauro PU 16 1378 47313
San Giustino PG 16 11297 58610
Montone PG 17 1680 60290
Sant'Angelo in Vado PU 18 4133 64423
Borgo Pace PU 18 606 65029
Monte Santa Maria Tiberina PG 19 1183 66212
Sansepolcro AR 20 15884 82096

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Arezzo (99543 inhabitants)
45 Km N of Perugia (166134 inhabitants)
62 Km SW of Pesaro (94582 inhabitants)
63 Km S of Rimini (147750 inhabitants)
64 Km SW of Fano (60888 inhabitants)
67 Km NW of Foligno (57155 inhabitants)
71 Km S of Cesena (96758 inhabitants)
84 Km SE of Forlì (117913 inhabitants)
87 Km E of Siena (53903 inhabitants)
93 Km W of Ancona (100861 inhabitants)
94 Km E of Firenze (382808 inhabitants)
95 Km SE of Faenza (58541 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 2.1 1999-06-09
21:20:10
43.51 12.374 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 367839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-06-09 21:20:10 ± 0.136
Latitude 43.5100 ± 0.0159
Longitude 12.3740 ± 0.0137
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 367839

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) 2084.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.00534
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 367839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:45:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PGD.Z. 1999-06-09T21:20:30.28 10.0 undecidable manual SG 307 0.5883 -0.77 0.2
--.ASS.Z. 1999-06-09T21:20:28.90 10.0 undecidable manual SG 155 0.4884 0.41 0.6
--.SNTG.Z. 1999-06-09T21:20:27.92 10.0 undecidable manual SG 121 0.4773 0.47 0.5
--.ARV.Z. 1999-06-09T21:20:24.96 10.0 undecidable manual SG 91 0.3996 -0.22 0.8
--.CRE.Z. 1999-06-09T21:20:22.70 10.0 undecidable manual SG 289 0.3219 -0.3 0.7
--.PGD.Z. 1999-06-09T21:20:22.40 10.0 undecidable manual PG 307 0.5883 0.24 1.7
--.SFI.Z. 1999-06-09T21:20:21.60 10.0 undecidable manual PG 315 0.5439 0.35 1.5
--.SNTG.Z. 1999-06-09T21:20:20.58 10.0 undecidable manual PG 121 0.4773 0.5 1.1
--.ASS.Z. 1999-06-09T21:20:19.53 10.0 undecidable manual PG 155 0.4884 -0.68 0.6
--.ARV.Z. 1999-06-09T21:20:18.34 10.0 undecidable manual PG 91 0.3996 -0.42 1.4
--.CRE.Z. 1999-06-09T21:20:17.30 10.0 undecidable manual PG 289 0.3219 0.16 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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