Earthquake with magnitude of Md 2.3 on date 13-10-1997 and time 23:48:23 (Italy) in region 3 km SE Sellano (PG)

A magnitude Md 2.3 earthquake occured in region: 3 km SE Sellano (PG), on

  • 13-10-1997 21:48:23 (UTC)
  • 13-10-1997 23:48:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8650, 12.9390 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
Cerreto di Spoleto PG 5 1075 2154
Preci PG 8 724 2878
Vallo di Nera PG 12 364 3242
Campello sul Clitunno PG 14 2442 5684
Visso MC 14 1107 6791
Norcia PG 15 4957 11748
Monte Cavallo MC 15 145 11893
Trevi PG 16 8469 20362
Sant'Anatolia di Narco PG 17 564 20926
Poggiodomo PG 17 117 21043
Cascia PG 17 3217 24260
Castelsantangelo sul Nera MC 18 281 24541
Ussita MC 19 444 24985
Scheggino PG 19 461 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
41 Km NE of Terni (111501 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 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
ML-VAX 1.8
1997-10-13
21:48:23
42.865 12.939 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 298219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-13 21:48:23 ± 0.167
Latitude 42.8650 ± 0.0089
Longitude 12.9390 ± 0.0209
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 298219

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) 1968.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00818
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 298219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:40:23

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 298219
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
--.FB9.Z. 1997-10-13T21:48:52.56 10.0 undecidable manual SG 351 0.8214 -0.34 0.4
--.ARV.Z. 1997-10-13T21:48:45.71 10.0 undecidable manual SG 0 0.6327 -0.73 0.2
--.MNS.Z. 1997-10-13T21:48:42.46 10.0 undecidable manual SG 201 0.5106 -0.23 0.7
--.FB9.Z. 1997-10-13T21:48:41.42 10.0 undecidable manual PG 351 0.8214 1.05 0.2
--.PQ9.Z. 1997-10-13T21:48:41.90 10.0 undecidable manual PG 157 0.9102 0.16 1.5
--.ARV.Z. 1997-10-13T21:48:36.16 10.0 undecidable manual PG 0 0.6327 -0.48 1
--.AQU.Z. 1997-10-13T21:48:36.49 10.0 undecidable manual PG 145 0.6105 0.21 1.8
--.MNS.Z. 1997-10-13T21:48:34.14 10.0 undecidable manual PG 201 0.5106 -0.33 1.5
--.ASS.Z. 1997-10-13T21:48:34.60 10.0 undecidable manual SG 313 0.2775 0.14 0.8
--.ASS.Z. 1997-10-13T21:48:30.00 10.0 undecidable manual PG 313 0.2775 0.28 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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