Earthquake with magnitude of Md 2.8 on date 28-09-1997 and time 05:01:00 (Italy) in region 6 km NW Sellano (PG)

A magnitude Md 2.8 earthquake occured in region: 6 km NW Sellano (PG), on

  • 28-09-1997 03:01:00 (UTC)
  • 28-09-1997 05:01:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.94, 12.9 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 6 1079 1079
Monte Cavallo MC 10 145 1224
Preci PG 13 724 1948
Cerreto di Spoleto PG 14 1075 3023
Trevi PG 14 8469 11492
Serravalle di Chienti MC 15 1070 12562
Visso MC 16 1107 13669
Foligno PG 16 57155 70824
Campello sul Clitunno PG 17 2442 73266
Pieve Torina MC 17 1458 74724
Valtopina PG 18 1398 76122
Fiordimonte MC 19 202 76324
Spello PG 19 8645 84969
Vallo di Nera PG 19 364 85333
Muccia MC 20 915 86248
Ussita MC 20 444 86692

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
47 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
90 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
Rev 1000 Md 2.8
ML-VAX 1.7
1997-09-28
03:01:00
42.94 12.9 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 282629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 03:01:00 ± 0.328
Latitude 42.94 ± 0.02
Longitude 12.90 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 282629

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) 3686.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.01149
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:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 282629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:26:39

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 282629
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
--.FB9.Z. 1997-09-28T03:01:26.69 10.0 undecidable manual SG 353 0.0067 -0.47 0.7
--.CSNT.Z. 1997-09-28T03:01:25.72 10.0 undecidable manual PN 294 0.0115 1.15 0.9
--.SFI.Z. 1997-09-28T03:01:25.94 10.0 undecidable manual PN! 321 0.011 2.17 0
--.PQ9.Z. 1997-09-28T03:01:22.00 10.0 undecidable manual PG 157 0.0089 1.87 0.4
--.RSM.Z. 1997-09-28T03:01:21.70 10.0 undecidable manual PG 341 0.0093 0.73 1.3
--.CRE.Z. 1997-09-28T03:01:20.79 10.0 undecidable manual PG 314 0.0087 1.14 1
--.ARV.Z. 1997-09-28T03:01:20.50 10.0 undecidable manual SG 3 0.0049 -0.77 0.6
--.MNS.Z. 1997-09-28T03:01:20.31 10.0 undecidable manual SG 195 0.0052 -1.29 0.4
--.AQU.Z. 1997-09-28T03:01:15.30 10.0 undecidable manual PG 147 0.0062 0.67 1.7
--.FB9.Z. 1997-09-28T03:01:14.58 10.0 undecidable manual PG 353 0.0067 -1.14 1.2
--.MNS.Z. 1997-09-28T03:01:11.20 10.0 positive manual PG 195 0.0052 -1.31 2
--.ARV.Z. 1997-09-28T03:01:10.91 10.0 undecidable manual PG 3 0.0049 -1.15 1.2
--.ASS.Z. 1997-09-28T03:01:08.42 10.0 undecidable manual SG 303 0.0019 -0.18 0.8
--.ASS.Z. 1997-09-28T03:01:05.46 10.0 undecidable manual PG 303 0.0019 0.46 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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