Earthquake with magnitude of Md 2.3 on date 05-10-1997 and time 01:59:57 (UTC) in region 5 km NW Preci (PG)

A magnitude Md 2.3 earthquake occured in region: 5 km NW Preci (PG), on

  • 05-10-1997 01:59:57 (UTC)
  • 05-10-1997 03:59:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9130, 12.9910 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
Preci PG 5 724 724
Sellano PG 6 1079 1803
Visso MC 8 1107 2910
Monte Cavallo MC 9 145 3055
Cerreto di Spoleto PG 12 1075 4130
Ussita MC 13 444 4574
Castelsantangelo sul Nera MC 13 281 4855
Pieve Torina MC 16 1458 6313
Norcia PG 16 4957 11270
Fiordimonte MC 16 202 11472
Serravalle di Chienti MC 18 1070 12542
Pievebovigliana MC 18 866 13408
Vallo di Nera PG 19 364 13772
Fiastra MC 19 559 14331
Muccia MC 19 915 15246
Acquacanina MC 20 121 15367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 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 2.3 1997-10-05
01:59:57
42.913 12.991 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 289899
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-05 01:59:57 ± 0.13
Latitude 42.9130 ± 0.0057
Longitude 12.9910 ± 0.0133
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 289899

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) 1256.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 154
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00567
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 289899
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:33:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1997-10-05T02:00:19.60 10.0 undecidable manual SG 203 0.5661 0.21 0.6
--.ARV.Z. 1997-10-05T02:00:19.45 10.0 undecidable manual SG 356 0.5883 0.22 0.6
--.AQU.Z. 1997-10-05T02:00:11.24 10.0 undecidable manual PG 151 0.6327 0.29 1.1
--.MNS.Z. 1997-10-05T02:00:09.47 10.0 undecidable manual PG 203 0.5661 -0.37 0.8
--.ARV.Z. 1997-10-05T02:00:09.81 10.0 undecidable manual PG 356 0.5883 -0.24 1.4
--.ASS.Z. 1997-10-05T02:00:09.20 10.0 undecidable manual SG 300 0.2886 0.4 0.3
--.ASS.Z. 1997-10-05T02:00:03.98 10.0 undecidable manual PG 300 0.2886 -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