Earthquake with magnitude of Md 3.1 on date 12-08-1998 and time 13:17:11 (Italy) in region 3 km NW Pietralunga (PG)

A magnitude Md 3.1 earthquake occured in region: 3 km NW Pietralunga (PG), on

  • 12-08-1998 11:17:11 (UTC)
  • 12-08-1998 13:17:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.46, 12.41 at 4 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
Pietralunga PG 3 2111 2111
Apecchio PU 11 1882 3993
Montone PG 13 1680 5673
CittĂ  di Castello PG 14 39913 45586
Piobbico PU 16 2029 47615
Cantiano PU 18 2245 49860
Gubbio PG 18 32216 82076
Umbertide PG 19 16681 98757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Perugia (166134 inhabitants)
43 Km E of Arezzo (99543 inhabitants)
61 Km NW of Foligno (57155 inhabitants)
64 Km SW of Pesaro (94582 inhabitants)
65 Km SW of Fano (60888 inhabitants)
68 Km S of Rimini (147750 inhabitants)
76 Km S of Cesena (96758 inhabitants)
89 Km E of Siena (53903 inhabitants)
90 Km SE of Forlì (117913 inhabitants)
91 Km W of Ancona (100861 inhabitants)
99 Km E of Firenze (382808 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 3.1
ML-VAX 2.0
1998-08-12
11:17:11
43.46 12.41 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 347849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-12 11:17:11 ± 0.134
Latitude 43.46 ± 0.01
Longitude 12.41 ± 0.01
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 347849

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) 1233.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.01295
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 347849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:25:49

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 7
Type of magnitude ML
Reference to an origin 347849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CSNT.Z. 1998-08-12T11:17:41.70 10.0 undecidable manual SG 271 0.0073 0.32 0.3
--.BDI.Z. 1998-08-12T11:17:39.13 10.0 undecidable manual PN 295 0.013 0.79 0.1
--.PII.Z. 1998-08-12T11:17:38.42 10.0 undecidable manual PN 281 0.0125 0.76 0.1
--.MNS.Z. 1998-08-12T11:17:33.46 10.0 undecidable manual PN 169 0.0098 -0.16 0.9
--.SFI.Z. 1998-08-12T11:17:33.11 10.0 undecidable manual SG 317 0.0053 -0.8 0.1
--.GRFL.Z. 1998-08-12T11:17:33.53 10.0 undecidable manual PG 253 0.0098 -0.02 1
--.SNTG.Z. 1998-08-12T11:17:29.35 10.0 undecidable manual SG 118 0.0039 0.96 0
--.ASS.Z. 1998-08-12T11:17:28.65 10.0 undecidable manual SG 156 0.0039 0.24 0.5
--.CSNT.Z. 1998-08-12T11:17:28.16 10.0 undecidable manual PG 271 0.0073 -0.23 1
--.NRCA.Z. 1998-08-12T11:17:27.99 10.0 undecidable manual PG 140 0.0073 -0.38 0.8
--.ARV.Z. 1998-08-12T11:17:26.74 10.0 undecidable manual SG 84 0.0035 0.25 0.4
--.CRE.Z. 1998-08-12T11:17:26.24 10.0 undecidable manual SG 295 0.0032 0.5 0.2
--.FB9.Z. 1998-08-12T11:17:25.43 10.0 undecidable manual SG 49 0.0031 0.4 0.3
--.SFI.Z. 1998-08-12T11:17:23.56 10.0 undecidable manual PG 317 0.0053 -0.88 0.1
--.RSM.Z. 1998-08-12T11:17:22.80 10.0 positive manual PG 3 0.0041 0.19 2.4
--.ASS.Z. 1998-08-12T11:17:21.19 10.0 positive manual PG 156 0.0039 -0.07 2.7
--.SNTG.Z. 1998-08-12T11:17:21.14 10.0 positive manual PG 118 0.0039 -0.12 2.6
--.ARV.Z. 1998-08-12T11:17:20.70 10.0 positive manual PG 84 0.0035 -0.09 2.6
--.FB9.Z. 1998-08-12T11:17:19.18 10.0 positive manual PG 49 0.0031 -0.14 2.6
--.CRE.Z. 1998-08-12T11:17:19.52 10.0 undecidable manual PG 295 0.0032 -0.2 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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