Earthquake with magnitude of Md 2.9 on date 10-09-1997 and time 11:17:20 (Italy) in region 3 km E Valtopina (PG)

A magnitude Md 2.9 earthquake occured in region: 3 km E Valtopina (PG), on

  • 10-09-1997 09:17:20 (UTC)
  • 10-09-1997 11:17:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.07, 12.79 at 10 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 3 1398 1398
Nocera Umbra PG 5 5839 7237
Spello PG 13 8645 15882
Serravalle di Chienti MC 13 1070 16952
Assisi PG 14 28299 45251
Foligno PG 14 57155 102406
Sefro MC 15 422 102828
Fiuminata MC 18 1402 104230
Gualdo Tadino PG 18 15208 119438
Valfabbrica PG 19 3389 122827
Cannara PG 19 4305 127132
Monte Cavallo MC 19 145 127277
Bastia Umbra PG 20 21874 149151
Pioraco MC 20 1134 150285

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Foligno (57155 inhabitants)
33 Km E of Perugia (166134 inhabitants)
58 Km N of Terni (111501 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
86 Km SE of Arezzo (99543 inhabitants)
87 Km NW of Teramo (54892 inhabitants)
88 Km S of Fano (60888 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Pesaro (94582 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 2.9
ML-VAX 2.1
1997-09-10
09:17:20
43.07 12.79 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 277459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-10 09:17:20 ± 0.304
Latitude 43.07 ± 0.02
Longitude 12.79 ± 0.04
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277459

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) 3544.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.01684
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 277459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:07

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 277459
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
--.BDI.Z. 1997-09-10T09:17:52.44 10.0 undecidable manual PN 302 0.0168 -0.27 0.9
--.SDI.Z. 1997-09-10T09:17:49.70 10.0 undecidable manual PN 150 0.0139 1.4 0.3
--.PQ9.Z. 1997-09-10T09:17:43.30 10.0 undecidable manual PN 156 0.0102 0.7 1
--.MNS.Z. 1997-09-10T09:17:43.80 10.0 undecidable manual SG 186 0.0062 -1.19 0.3
--.CSNT.Z. 1997-09-10T09:17:42.56 10.0 undecidable manual PN 290 0.0104 -0.41 1.2
--.SFI.Z. 1997-09-10T09:17:42.29 10.0 undecidable manual PN 320 0.0097 0.48 1.2
--.RSM.Z. 1997-09-10T09:17:39.56 10.0 undecidable manual PG 343 0.008 0.91 0.9
--.AQU.Z. 1997-09-10T09:17:38.13 10.0 undecidable manual PG 147 0.0075 0.44 1.4
--.ARV.Z. 1997-09-10T09:17:36.79 10.0 undecidable manual SG 14 0.004 -0.33 0.6
--.MNS.Z. 1997-09-10T09:17:32.86 10.0 undecidable manual PG 186 0.0062 -1.98 0.1
--.ARV.Z. 1997-09-10T09:17:29.37 10.0 positive manual PG 14 0.004 -0.93 1.8
--.ASS.Z. 1997-09-10T09:17:27.16 10.0 undecidable manual SG 266 0.0009 0.86 0.4
--.ASS.Z. 1997-09-10T09:17:24.26 10.0 positive manual PG 266 0.0009 0.21 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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