Earthquake with magnitude of Md 2.5 on date 13-09-1997 and time 05:46:26 (Italy) in region 6 km E Valtopina (PG)

A magnitude Md 2.5 earthquake occured in region: 6 km E Valtopina (PG), on

  • 13-09-1997 03:46:26 (UTC)
  • 13-09-1997 05:46:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.04, 12.83 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 6 1398 1398
Nocera Umbra PG 8 5839 7237
Serravalle di Chienti MC 11 1070 8307
Spello PG 14 8645 16952
Foligno PG 14 57155 74107
Monte Cavallo MC 15 145 74252
Sefro MC 15 422 74674
Assisi PG 18 28299 102973
Pieve Torina MC 18 1458 104431
Muccia MC 18 915 105346
Fiuminata MC 18 1402 106748
Sellano PG 19 1079 107827
Trevi PG 19 8469 116296
Pioraco MC 20 1134 117430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
56 Km N of Terni (111501 inhabitants)
83 Km NW of Teramo (54892 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
91 Km S of Fano (60888 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
97 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 2.5
ML-VAX 1.6
1997-09-13
03:46:26
43.04 12.83 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 277689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-13 03:46:26 ± 0.224
Latitude 43.04 ± 0.01
Longitude 12.83 ± 0.03
Depth (km) 10 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277689

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) 3029.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.0136
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 277689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:19

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 277689
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
--.AQU.Z. 1997-09-13T03:46:54.57 10.0 undecidable manual SG 148 0.0072 0.02 0.7
--.SDI.Z. 1997-09-13T03:46:53.90 10.0 undecidable manual PN 150 0.0136 0.3 1
--.PQ9.Z. 1997-09-13T03:46:49.26 10.0 undecidable manual PN 157 0.0099 1.33 0.2
--.MNS.Z. 1997-09-13T03:46:49.12 10.0 undecidable manual SG 189 0.006 -0.92 0.3
--.AQU.Z. 1997-09-13T03:46:42.20 10.0 undecidable manual PG 148 0.0072 -0.6 1.1
--.ARV.Z. 1997-09-13T03:46:42.59 10.0 undecidable manual SG 10 0.0041 -0.95 0.3
--.MNS.Z. 1997-09-13T03:46:39.30 10.0 undecidable manual PG 189 0.006 -0.89 0.7
--.ARV.Z. 1997-09-13T03:46:36.28 10.0 positive manual PG 10 0.0041 -0.16 3.5
--.ASS.Z. 1997-09-13T03:46:33.40 10.0 undecidable manual SG 278 0.0011 0.21 0.7
--.ASS.Z. 1997-09-13T03:46:30.48 10.0 undecidable manual PG 278 0.0011 0.22 1.7
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