Earthquake with magnitude of Md 2.2 on date 09-10-1997 and time 17:25:58 (Italy) in region 3 km N Sellano (PG)

A magnitude Md 2.2 earthquake occured in region: 3 km N Sellano (PG), on

  • 09-10-1997 15:25:58 (UTC)
  • 09-10-1997 17:25:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9130, 12.9240 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 3 1079 1079
Preci PG 10 724 1803
Cerreto di Spoleto PG 10 1075 2878
Monte Cavallo MC 11 145 3023
Visso MC 14 1107 4130
Trevi PG 15 8469 12599
Campello sul Clitunno PG 16 2442 15041
Vallo di Nera PG 17 364 15405
Serravalle di Chienti MC 18 1070 16475
Ussita MC 18 444 16919
Pieve Torina MC 18 1458 18377
Foligno PG 19 57155 75532
Castelsantangelo sul Nera MC 19 281 75813
Norcia PG 19 4957 80770
Fiordimonte MC 19 202 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)
70 Km W of Teramo (54892 inhabitants)
74 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 2.2
ML-VAX 1.6
1997-10-09
15:25:58
42.913 12.924 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 294499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-09 15:25:58 ± 0.041
Latitude 42.9130 ± 0.0015
Longitude 12.9240 ± 0.0041
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 294499

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) 375.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00704
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 294499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:37:05

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 294499
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(km) Takeoff_angle Residual Weight
--.ARV.Z. 1997-10-09T15:26:20.50 10.0 undecidable manual SG 1 0.5883 0.12 0.3
--.MNS.Z. 1997-10-09T15:26:19.50 10.0 undecidable manual SG 198 0.5439 0.02 0.6
--.FB9.Z. 1997-10-09T15:26:14.79 10.0 undecidable manual PG 352 0.777 -0.15 0.6
--.ARV.Z. 1997-10-09T15:26:11.25 10.0 undecidable manual PG 1 0.5883 0.03 1.5
--.MNS.Z. 1997-10-09T15:26:10.69 10.0 undecidable manual PG 198 0.5439 -0.01 1.7
--.ASS.Z. 1997-10-09T15:26:08.42 10.0 undecidable manual SG 306 0.2442 -0.02 0.7
--.ASS.Z. 1997-10-09T15:26:04.35 10.0 undecidable manual PG 306 0.2442 0.02 1.7
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