Earthquake with magnitude of Md 3.4 on date 04-10-1997 and time 14:43:10 (Italy) in region 2 km N Sellano (PG)

A magnitude Md 3.4 earthquake occured in region: 2 km N Sellano (PG), on

  • 04-10-1997 12:43:10 (UTC)
  • 04-10-1997 14:43:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.91, 12.93 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
Sellano PG 2 1079 1079
Preci PG 10 724 1803
Cerreto di Spoleto PG 10 1075 2878
Monte Cavallo MC 11 145 3023
Visso MC 13 1107 4130
Trevi PG 15 8469 12599
Campello sul Clitunno PG 16 2442 15041
Vallo di Nera PG 16 364 15405
Ussita MC 18 444 15849
Pieve Torina MC 18 1458 17307
Serravalle di Chienti MC 18 1070 18377
Castelsantangelo sul Nera MC 19 281 18658
Norcia PG 19 4957 23615
Foligno PG 19 57155 80770
Fiordimonte MC 20 202 80972

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
49 Km E of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 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 3.4
ML-VAX 2.5
1997-10-04
12:43:10
42.91 12.93 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 289249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-04 12:43:10 ± 0.172
Latitude 42.91 ± 0.01
Longitude 12.93 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 289249

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) 2211.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01837
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 289249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:32:27

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 289249
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. 1997-10-04T12:43:46.28 10.0 undecidable manual PN 304 0.0184 0.38 0.8
--.SDI.Z. 1997-10-04T12:43:37.20 10.0 undecidable manual PN 150 0.0122 0.45 1
--.CSNT.Z. 1997-10-04T12:43:36.57 10.0 undecidable manual PN 295 0.0118 0.64 0.7
--.AQU.Z. 1997-10-04T12:43:35.33 10.0 undecidable manual SG 147 0.0058 0.44 0.5
--.SFI.Z. 1997-10-04T12:43:35.93 10.0 undecidable manual PN 321 0.0113 0.72 0.5
--.RDP.Z. 1997-10-04T12:43:33.27 10.0 undecidable manual PN 187 0.0104 -0.49 1
--.RSM.Z. 1997-10-04T12:43:33.25 10.0 undecidable manual PG 341 0.0096 0.66 0.7
--.RMP.Z. 1997-10-04T12:43:32.45 10.0 undecidable manual PN 188 0.01 -0.61 0.8
--.CRE.Z. 1997-10-04T12:43:31.50 10.0 undecidable manual PG 315 0.009 0.24 1.5
--.ARV.Z. 1997-10-04T12:43:31.98 10.0 undecidable manual SG 0 0.0053 -0.79 0.2
--.MNS.Z. 1997-10-04T12:43:31.66 10.0 undecidable manual SG 198 0.0049 0 0.7
--.PQ9.Z. 1997-10-04T12:43:30.37 10.0 undecidable manual PG 158 0.0085 0.07 1.7
--.AQU.Z. 1997-10-04T12:43:24.89 10.0 undecidable manual PG 147 0.0058 0.1 1.7
--.MNS.Z. 1997-10-04T12:43:22.66 10.0 positive manual PG 198 0.0049 -0.27 3.1
--.ARV.Z. 1997-10-04T12:43:22.55 10.0 undecidable manual PG 0 0.0053 -1.01 0.3
--.ASS.Z. 1997-10-04T12:43:20.15 10.0 undecidable manual SG 307 0.0023 -0.73 0.3
--.ASS.Z. 1997-10-04T12:43:16.54 10.0 undecidable manual PG 307 0.0023 -0.16 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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