Earthquake with magnitude of Md 3.5 on date 31-08-1998 and time 22:34:25 (UTC) in region 10 km W Fossato di Vico (PG)

A magnitude Md 3.5 earthquake occured in region: 10 km W Fossato di Vico (PG), on

  • 31-08-1998 22:34:25 (UTC)
  • 01-09-1998 00:34:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.25, 12.65 at 0 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
Fossato di Vico PG 10 2840 2840
Gualdo Tadino PG 11 15208 18048
Valfabbrica PG 11 3389 21437
Sigillo PG 12 2404 23841
Costacciaro PG 13 1216 25057
Gubbio PG 13 32216 57273
Scheggia e Pascelupo PG 17 1393 58666
Nocera Umbra PG 19 5839 64505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Perugia (166134 inhabitants)
33 Km N of Foligno (57155 inhabitants)
67 Km E of Arezzo (99543 inhabitants)
72 Km SW of Fano (60888 inhabitants)
76 Km S of Pesaro (94582 inhabitants)
77 Km N of Terni (111501 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
90 Km S of Rimini (147750 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 3.5
ML-VAX 2.4
1998-08-31
22:34:25
43.25 12.65 0 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 349969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-31 22:34:25 ± 0.248
Latitude 43.25 ± 0.01
Longitude 12.65 ± 0.02
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 349969

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) 1859.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.03683
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 11
Type of magnitude Md
Reference to an origin 349969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:27:50

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 14
Type of magnitude ML
Reference to an origin 349969
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
--.DOI.Z. 1998-08-31T22:35:28.70 10.0 undecidable manual PN 289 0.0368 -0.13 1.1
--.BR9.Z. 1998-08-31T22:35:25.10 10.0 undecidable manual PN! 334 0.0324 2.85 0
--.MU9.Z. 1998-08-31T22:35:20.35 10.0 undecidable manual PN! 138 0.0293 2.95 0
--.PTCC.Z. 1998-08-31T22:35:16.35 10.0 undecidable manual PN 8 0.0287 -0.12 1.3
--.BOB.Z. 1998-08-31T22:35:14.40 10.0 undecidable manual PN! 304 0.0248 3.52 0
--.SAL.Z. 1998-08-31T22:35:13.65 10.0 undecidable manual PN! 327 0.0252 2.52 0
--.CTI.Z. 1998-08-31T22:35:13.52 10.0 undecidable manual PN 346 0.0259 1.26 0.4
--.VVI.Z. 1998-08-31T22:35:10.88 10.0 undecidable manual PN 356 0.0246 0.69 0.9
--.FG2.Z. 1998-08-31T22:35:08.11 10.0 undecidable manual PN! 127 0.021 3.27 0
--.CSNT.Z. 1998-08-31T22:35:02.31 10.0 undecidable manual SG 283 0.0091 0.88 0.5
--.EB9.Z. 1998-08-31T22:35:02.77 10.0 undecidable manual PN! 306 0.0179 2.75 0
--.SFI.Z. 1998-08-31T22:34:59.61 10.0 undecidable manual SG! 318 0.0079 2.63 0
--.GU9.Z. 1998-08-31T22:34:58.30 10.0 undecidable manual PN 307 0.0166 -0.05 1.8
--.MNS.Z. 1998-08-31T22:34:58.26 10.0 undecidable manual SG 178 0.0078 1.61 0.1
--.SDI.Z. 1998-08-31T22:34:57.58 10.0 undecidable manual PN 150 0.0158 0.75 1
--.ZC9.Z. 1998-08-31T22:34:57.43 10.0 undecidable manual PN! 312 0.0147 2.33 0
--.PII.Z. 1998-08-31T22:34:56.19 10.0 undecidable manual PN 287 0.0145 1.37 0.4
--.BDI.Z. 1998-08-31T22:34:54.75 10.0 undecidable manual PN 299 0.0152 -1.16 0.8
--.RDP.Z. 1998-08-31T22:34:53.93 10.0 undecidable manual PN 178 0.0134 0.79 1
--.GRFL.Z. 1998-08-31T22:34:49.58 10.0 undecidable manual PN 265 0.011 0.07 2
--.CRE.Z. 1998-08-31T22:34:48.30 10.0 undecidable manual SG 306 0.0057 -0.77 0.5
--.CSNT.Z. 1998-08-31T22:34:45.69 10.0 undecidable manual PG 283 0.0091 -0.37 1.8
--.AQU.Z. 1998-08-31T22:34:45.31 10.0 undecidable manual PG 148 0.0094 -1.41 0.6
--.NRCA.Z. 1998-08-31T22:34:44.70 10.0 undecidable manual SG 141 0.0048 -0.95 0.5
--.SFI.Z. 1998-08-31T22:34:44.10 10.0 undecidable manual PG 318 0.0079 0.63 1.5
--.MNS.Z. 1998-08-31T22:34:43.88 10.0 undecidable manual PG 178 0.0078 0.59 1.4
--.FB9.Z. 1998-08-31T22:34:42.50 10.0 undecidable manual SG 11 0.004 0.12 0.8
--.CRE.Z. 1998-08-31T22:34:38.11 10.0 undecidable manual PG 306 0.0057 -0.8 1.3
--.NRCA.Z. 1998-08-31T22:34:35.52 10.0 negative manual PG 141 0.0048 -1.41 1.2
--.FB9.Z. 1998-08-31T22:34:34.77 10.0 positive manual PG 11 0.004 -0.28 3.8
--.SNTG.Z. 1998-08-31T22:34:33.60 10.0 undecidable manual SG 88 0.0019 0.54 0.6
--.ASS.Z. 1998-08-31T22:34:32.50 10.0 undecidable manual SG 180 0.0016 0.21 0.7
--.SNTG.Z. 1998-08-31T22:34:30.12 10.0 positive manual PG 88 0.0019 0.45 3.2
--.ASS.Z. 1998-08-31T22:34:29.43 10.0 positive manual PG 180 0.0016 0.2 3.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download