Earthquake with magnitude of Md 2.4 on date 07-10-1997 and time 01:39:17 (Italy) in region 6 km S Valtopina (PG)

A magnitude Md 2.4 earthquake occured in region: 6 km S Valtopina (PG), on

  • 06-10-1997 23:39:17 (UTC)
  • 07-10-1997 01:39:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0060, 12.7690 at 16 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
Valtopina PG 6 1398 1398
Foligno PG 8 57155 58553
Spello PG 8 8645 67198
Nocera Umbra PG 12 5839 73037
Trevi PG 14 8469 81506
Assisi PG 14 28299 109805
Cannara PG 15 4305 114110
Bevagna PG 15 5081 119191
Montefalco PG 16 5679 124870
Serravalle di Chienti MC 17 1070 125940
Sellano PG 18 1079 127019
Monte Cavallo MC 19 145 127164
Bastia Umbra PG 19 21874 149038

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Foligno (57155 inhabitants)
33 Km E of Perugia (166134 inhabitants)
50 Km N of Terni (111501 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
86 Km W of Teramo (54892 inhabitants)
88 Km SE of Arezzo (99543 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 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 2.4
ML-VAX 2.0
1997-10-06
23:39:17
43.006 12.769 16 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 291259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-06 23:39:17 ± 0.209
Latitude 43.0060 ± 0.0061
Longitude 12.7690 ± 0.0368
Depth (km) 16 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 291259

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) 3068.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00720
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 291259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:34:15

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 291259
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
--.FB9.Z. 1997-10-06T23:39:41.14 10.0 undecidable manual SG 0 0.6882 -0.25 0.5
--.MNS.Z. 1997-10-06T23:39:39.78 10.0 undecidable manual SG 185 0.6216 0.32 0.7
--.ARV.Z. 1997-10-06T23:39:36.00 10.0 undecidable manual SG 14 0.4995 0.24 0.6
--.AQU.Z. 1997-10-06T23:39:33.50 10.0 undecidable manual PG 144 0.7992 0.11 1.1
--.FB9.Z. 1997-10-06T23:39:31.70 10.0 undecidable manual PG 0 0.6882 0.45 1.4
--.MNS.Z. 1997-10-06T23:39:29.67 10.0 undecidable manual PG 185 0.6216 -0.46 0.8
--.ARV.Z. 1997-10-06T23:39:27.50 10.0 undecidable manual PG 14 0.4995 -0.49 1.1
--.ASS.Z. 1997-10-06T23:39:24.00 10.0 undecidable manual SG 303 0.0999 0.21 0.5
--.ASS.Z. 1997-10-06T23:39:21.00 10.0 undecidable manual PG 303 0.0999 -0.09 2.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download