Earthquake with magnitude of Md 2.2 on date 07-10-1997 and time 09:16:47 (UTC) in region 6 km E Valfabbrica (PG)

A magnitude Md 2.2 earthquake occured in region: 6 km E Valfabbrica (PG), on

  • 07-10-1997 09:16:47 (UTC)
  • 07-10-1997 11:16:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1790, 12.6770 at 3 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
Valfabbrica PG 6 3389 3389
Gualdo Tadino PG 11 15208 18597
Nocera Umbra PG 12 5839 24436
Assisi PG 13 28299 52735
Valtopina PG 15 1398 54133
Fossato di Vico PG 15 2840 56973
Bastia Umbra PG 16 21874 78847
Sigillo PG 18 2404 81251

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Perugia (166134 inhabitants)
25 Km N of Foligno (57155 inhabitants)
69 Km N of Terni (111501 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
79 Km SW of Fano (60888 inhabitants)
84 Km S of Pesaro (94582 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
99 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
Bulletin
Rev1000
Md 2.2
ML-VAX 1.8
1997-10-07
09:16:47
43.179 12.677 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 292259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-07 09:16:47 ± 0.062
Latitude 43.1790 ± 0.0038
Longitude 12.6770 ± 0.0172
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 292259

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) 1458.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00712
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 292259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:35:07

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 292259
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(km) Takeoff_angle Residual Weight
--.MNS.Z. 1997-10-07T09:17:16.25 10.0 undecidable manual SG 179 0.7881 -0.02 0.4
--.MNS.Z. 1997-10-07T09:17:04.16 10.0 undecidable manual PG 179 0.7881 0.01 0.9
--.ARV.Z. 1997-10-07T09:17:02.27 10.0 undecidable manual SG 31 0.3663 0.22 0
--.FB9.Z. 1997-10-07T09:16:59.50 10.0 undecidable manual PG 7 0.5106 0.01 1.2
--.ARV.Z. 1997-10-07T09:16:55.87 10.0 positive manual PG 31 0.3663 -0.07 2.1
--.ASS.Z. 1997-10-07T09:16:52.14 10.0 undecidable manual SG 188 0.1221 -0.15 0.2
--.ASS.Z. 1997-10-07T09:16:50.37 10.0 positive manual PG 188 0.1221 0.06 2.2
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