Earthquake with magnitude of Md 3.8 on date 12-10-1997 and time 20:12:03 (Italy) in region 3 km NW Preci (PG)

A magnitude Md 3.8 earthquake occured in region: 3 km NW Preci (PG), on

  • 12-10-1997 18:12:03 (UTC)
  • 12-10-1997 20:12:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9, 13.03 at 2 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 3 724 724
Visso MC 6 1107 1831
Sellano PG 8 1079 2910
Ussita MC 10 444 3354
Castelsantangelo sul Nera MC 10 281 3635
Monte Cavallo MC 10 145 3780
Cerreto di Spoleto PG 13 1075 4855
Norcia PG 13 4957 9812
Fiordimonte MC 16 202 10014
Pieve Torina MC 16 1458 11472
Fiastra MC 18 559 12031
Pievebovigliana MC 18 866 12897
Acquacanina MC 19 121 13018
Bolognola MC 19 142 13160
Serravalle di Chienti MC 20 1070 14230
Muccia MC 20 915 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
62 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
93 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 3.8 1997-10-12
18:12:03
42.9 13.03 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 296669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-12 18:12:03 ± 0.228
Latitude 42.90 ± 0.01
Longitude 13.03 ± 0.02
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 296669

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) 1370.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01247
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

Md:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 296669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:39:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1997-10-12T18:12:32.43 10.0 undecidable manual SG 346 0.0072 -0.18 0.5
--.CSNT.Z. 1997-10-12T18:12:30.10 10.0 undecidable manual PN 294 0.0125 0.43 0.7
--.SDI.Z. 1997-10-12T18:12:29.33 10.0 undecidable manual PN 153 0.0119 0.56 0.5
--.SFI.Z. 1997-10-12T18:12:29.20 10.0 undecidable manual PN 319 0.0118 0.41 0.8
--.RDP.Z. 1997-10-12T18:12:27.00 10.0 undecidable manual PN 191 0.0104 0.42 0.8
--.RSM.Z. 1997-10-12T18:12:26.46 10.0 undecidable manual PN 337 0.0099 0.73 0.2
--.AQU.Z. 1997-10-12T18:12:26.16 10.0 undecidable manual SG 153 0.0055 -0.27 0.4
--.ARV.Z. 1997-10-12T18:12:25.74 10.0 undecidable manual SG 353 0.0053 -0.1 0.5
--.RMP.Z. 1997-10-12T18:12:25.59 10.0 undecidable manual PN 192 0.01 -0.3 0.8
--.MNS.Z. 1997-10-12T18:12:25.20 10.0 undecidable manual SG 206 0.0052 -0.22 0.5
--.CRE.Z. 1997-10-12T18:12:24.50 10.0 undecidable manual PG 312 0.0095 -0.39 0.6
--.PQ9.Z. 1997-10-12T18:12:22.16 10.0 undecidable manual PG 162 0.0083 -0.2 1.3
--.FB9.Z. 1997-10-12T18:12:19.89 10.0 undecidable manual PG 346 0.0072 -0.31 0.9
--.ARV.Z. 1997-10-12T18:12:16.23 10.0 positive manual PG 353 0.0053 -0.07 3
--.AQU.Z. 1997-10-12T18:12:16.78 10.0 undecidable manual PG 153 0.0055 0.15 1.6
--.MNS.Z. 1997-10-12T18:12:15.74 10.0 undecidable manual PG 206 0.0052 -0.21 1.3
--.ASS.Z. 1997-10-12T18:12:15.14 10.0 undecidable manual SG 299 0.0028 -0.34 0.4
--.ASS.Z. 1997-10-12T18:12:10.44 10.0 positive manual PG 299 0.0028 0.13 3.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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