Earthquake with magnitude of Md 2.8 on date 09-09-1997 and time 22:22:04 (Italy) in region 9 km E Foligno (PG)

A magnitude Md 2.8 earthquake occured in region: 9 km E Foligno (PG), on

  • 09-09-1997 20:22:04 (UTC)
  • 09-09-1997 22:22:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.82 at 5 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
Foligno PG 9 57155 57155
Trevi PG 11 8469 65624
Sellano PG 12 1079 66703
Valtopina PG 12 1398 68101
Spello PG 13 8645 76746
Monte Cavallo MC 15 145 76891
Montefalco PG 16 5679 82570
Campello sul Clitunno PG 16 2442 85012
Serravalle di Chienti MC 16 1070 86082
Nocera Umbra PG 17 5839 91921
Bevagna PG 17 5081 97002
Cerreto di Spoleto PG 18 1075 98077
Cannara PG 20 4305 102382
Castel Ritaldi PG 20 3278 105660

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km E of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
47 Km NE of Terni (111501 inhabitants)
80 Km W of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
94 Km SE of Arezzo (99543 inhabitants)
99 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
Rev 1000 Md 2.8
ML-VAX 1.7
1997-09-09
20:22:04
42.96 12.82 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 277379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-09 20:22:04 ± 0.244
Latitude 42.96 ± 0.02
Longitude 12.82 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277379

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) 3408
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01303
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 277379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:03

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 277379
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
--.PQ9.Z. 1997-09-09T20:22:39.91 10.0 undecidable manual SG 155 0.0092 -0.93 0.4
--.SDI.Z. 1997-09-09T20:22:32.92 10.0 undecidable manual PN 149 0.013 1.37 0.4
--.AQU.Z. 1997-09-09T20:22:30.99 10.0 undecidable manual SG 144 0.0066 -0.56 0.7
--.CSNT.Z. 1997-09-09T20:22:28.84 10.0 undecidable manual PN 294 0.011 0.41 1.5
--.SFI.Z. 1997-09-09T20:22:27.97 10.0 undecidable manual PN 323 0.0105 0.2 1.6
--.MNS.Z. 1997-09-09T20:22:26.30 10.0 undecidable manual SG 189 0.0053 -0.48 0.6
--.RSM.Z. 1997-09-09T20:22:26.37 10.0 undecidable manual PG 344 0.009 1.36 0.5
--.PQ9.Z. 1997-09-09T20:22:25.98 10.0 undecidable manual PG 155 0.0092 0.38 1.6
--.ARV.Z. 1997-09-09T20:22:23.83 10.0 undecidable manual SG 9 0.0049 -1.26 0.3
--.AQU.Z. 1997-09-09T20:22:20.66 10.0 undecidable manual PG 144 0.0066 0.41 1.9
--.MNS.Z. 1997-09-09T20:22:16.51 10.0 undecidable manual PG 189 0.0053 -0.82 1.1
--.ARV.Z. 1997-09-09T20:22:15.16 10.0 undecidable manual PG 9 0.0049 -1.35 0.6
--.ASS.Z. 1997-09-09T20:22:10.93 10.0 undecidable manual SG 308 0.0014 -0.16 0.8
--.ASS.Z. 1997-09-09T20:22:08.29 10.0 undecidable manual PG 308 0.0014 -0.14 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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