Earthquake with magnitude of Md 2.7 on date 18-10-1997 and time 23:24:16 (Italy) in region 7 km E Nocera Umbra (PG)

A magnitude Md 2.7 earthquake occured in region: 7 km E Nocera Umbra (PG), on

  • 18-10-1997 21:24:16 (UTC)
  • 18-10-1997 23:24:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.138, 12.863 at 3 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
Nocera Umbra PG 7 5839 5839
Sefro MC 7 422 6261
Fiuminata MC 8 1402 7663
Serravalle di Chienti MC 10 1070 8733
Pioraco MC 11 1134 9867
Gualdo Tadino PG 12 15208 25075
Valtopina PG 12 1398 26473
Esanatoglia MC 14 2034 28507
Muccia MC 16 915 29422
Camerino MC 17 6974 36396
Castelraimondo MC 18 4587 40983
Matelica MC 18 9981 50964
Pieve Torina MC 18 1458 52422
Fossato di Vico PG 19 2840 55262
Monte Cavallo MC 20 145 55407
Pievebovigliana MC 20 866 56273

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
66 Km N of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
80 Km S of Fano (60888 inhabitants)
86 Km S of Pesaro (94582 inhabitants)
87 Km NW of Teramo (54892 inhabitants)
87 Km E of Arezzo (99543 inhabitants)
98 Km NW of L'Aquila (69753 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 2.7
ML-VAX 1.7
1997-10-18
21:24:16
43.138 12.863 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 303059
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-18 21:24:16 ± 0.213
Latitude 43.1380 ± 0.0064
Longitude 12.8630 ± 0.0153
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 303059

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) 1429.1
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 11
Number of defining phases 11
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) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.01425
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 303059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:44:39

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 303059
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
--.SDI.Z. 1997-10-18T21:24:45.56 10.0 undecidable manual PN 153 0.0142 0.05 1.3
--.PQ9.Z. 1997-10-18T21:24:39.55 10.0 undecidable manual PN 160 0.0106 -0.39 0.8
--.SFI.Z. 1997-10-18T21:24:38.20 10.0 undecidable manual PG 316 0.0096 0.09 1.6
--.FB9.Z. 1997-10-18T21:24:37.15 10.0 undecidable manual SG 353 0.0049 -0.53 0.2
--.CRE.Z. 1997-10-18T21:24:34.40 10.0 undecidable manual PG 306 0.0074 0.42 0.9
--.MNS.Z. 1997-10-18T21:24:33.00 10.0 undecidable manual PG 189 0.0069 0.4 1
--.ARV.Z. 1997-10-18T21:24:30.28 10.0 undecidable manual SG 9 0.0032 -0.42 0.4
--.FB9.Z. 1997-10-18T21:24:28.60 10.0 undecidable manual PG 353 0.0049 -0.16 1.9
--.ARV.Z. 1997-10-18T21:24:25.14 10.0 undecidable manual PG 9 0.0032 0.41 1
--.ASS.Z. 1997-10-18T21:24:23.17 10.0 undecidable manual SG 243 0.0015 -0.1 0.8
--.ASS.Z. 1997-10-18T21:24:20.70 10.0 undecidable manual PG 243 0.0015 -0.38 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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