Earthquake with magnitude of Md 2.1 on date 22-08-1996 and time 02:58:58 (Italy) in region 3 km NE Umbertide (PG)

A magnitude Md 2.1 earthquake occured in region: 3 km NE Umbertide (PG), on

  • 22-08-1996 00:58:58 (UTC)
  • 22-08-1996 02:58:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3230, 12.3540 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
Umbertide PG 3 16681 16681
Montone PG 5 1680 18361
Pietralunga PG 15 2111 20472
Città di Castello PG 18 39913 60385
Gubbio PG 19 32216 92601
Lisciano Niccone PG 19 613 93214
Monte Santa Maria Tiberina PG 20 1183 94397

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km N of Perugia (166134 inhabitants)
41 Km E of Arezzo (99543 inhabitants)
50 Km NW of Foligno (57155 inhabitants)
79 Km SW of Fano (60888 inhabitants)
79 Km SW of Pesaro (94582 inhabitants)
83 Km E of Siena (53903 inhabitants)
84 Km S of Rimini (147750 inhabitants)
88 Km N of Terni (111501 inhabitants)
91 Km S of Cesena (96758 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 1996-08-22
00:58:58
43.323 12.354 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 251419
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1996-08-22 00:58:58 ± 0.197
Latitude 43.3230 ± 0.0128
Longitude 12.3540 ± 0.0176
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 251419

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) 2012.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00300
Epicentral distance of station farthest from the epicenter (degree) 0.00639
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 251419
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:57:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SFI.Z. 1996-08-22T00:59:22.29 10.0 undecidable manual SG 328 0.6882 0.14 0.5
--.PGD.Z. 1996-08-22T00:59:22.26 10.0 undecidable manual SG 320 0.7104 -0.86 0.1
--.FB9.Z. 1996-08-22T00:59:15.20 10.0 undecidable manual SG 39 0.4773 -0.32 0.5
--.ARV.Z. 1996-08-22T00:59:14.56 10.0 undecidable manual SG 67 0.4551 -0.41 0.5
--.CRE.Z. 1996-08-22T00:59:13.18 10.0 undecidable manual SG 315 0.4107 -0.29 0.4
--.PGD.Z. 1996-08-22T00:59:13.30 10.0 undecidable manual PG 320 0.7104 0.45 1.1
--.SFI.Z. 1996-08-22T00:59:13.57 10.0 undecidable manual PG 328 0.6882 1.55 0.1
--.ASS.Z. 1996-08-22T00:59:11.16 10.0 undecidable manual SG 140 0.333 0.18 0.6
--.FB9.Z. 1996-08-22T00:59:08.49 10.0 undecidable manual PG 39 0.4773 0.3 1.4
--.ARV.Z. 1996-08-22T00:59:07.93 10.0 undecidable manual PG 67 0.4551 0.06 1.5
--.CRE.Z. 1996-08-22T00:59:06.79 10.0 positive manual PG 315 0.4107 -0.22 2.4
--.ASS.Z. 1996-08-22T00:59:05.50 10.0 negative manual PG 140 0.333 -0.07 3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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