Earthquake with magnitude of Md 2.0 on date 24-10-1997 and time 18:38:55 (Italy) in region 5 km SE Nocera Umbra (PG)

A magnitude Md 2.0 earthquake occured in region: 5 km SE Nocera Umbra (PG), on

  • 24-10-1997 16:38:55 (UTC)
  • 24-10-1997 18:38:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0700, 12.8260 at 4 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 5 5839 5839
Valtopina PG 6 1398 7237
Serravalle di Chienti MC 10 1070 8307
Sefro MC 13 422 8729
Spello PG 15 8645 17374
Fiuminata MC 16 1402 18776
Foligno PG 16 57155 75931
Monte Cavallo MC 17 145 76076
Assisi PG 17 28299 104375
Pioraco MC 18 1134 105509
Muccia MC 18 915 106424
Gualdo Tadino PG 18 15208 121632
Pieve Torina MC 19 1458 123090

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
58 Km N of Terni (111501 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
85 Km NW of Teramo (54892 inhabitants)
88 Km S of Fano (60888 inhabitants)
88 Km SE of Arezzo (99543 inhabitants)
93 Km NW of L'Aquila (69753 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
94 Km S of Pesaro (94582 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 2.0
ML-VAX 1.5
1997-10-24
16:38:55
43.07 12.826 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 305529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-24 16:38:55 ± 0.107
Latitude 43.0700 ± 0.0061
Longitude 12.8260 ± 0.0081
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 305529

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) 950.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00623
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 305529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:46:51

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 305529
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
--.MNS.Z. 1997-10-24T16:39:20.00 10.0 undecidable manual SG 188 0.6882 -0.33 0.1
--.MNS.Z. 1997-10-24T16:39:10.00 10.0 undecidable manual PG 188 0.6882 0.33 0.4
--.NRCA.Z. 1997-10-24T16:39:07.73 10.0 undecidable manual SG 138 0.3108 0.34 0.2
--.SNTG.Z. 1997-10-24T16:39:03.18 10.0 undecidable manual SG 24 0.1998 0.11 0.7
--.NRCA.Z. 1997-10-24T16:39:01.91 10.0 undecidable manual PG 138 0.3108 -0.29 0.8
--.ASS.Z. 1997-10-24T16:39:00.34 10.0 undecidable manual SG 266 0.1221 0.11 0.6
--.SNTG.Z. 1997-10-24T16:38:59.69 10.0 positive manual PG 24 0.1998 -0.02 3.7
--.ASS.Z. 1997-10-24T16:38:57.93 10.0 undecidable manual PG 266 0.1221 -0.14 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download