Earthquake with magnitude of Md 2.2 on date 29-09-1997 and time 01:55:39 (Italy) in region 5 km S Monte Cavallo (MC)

A magnitude Md 2.2 earthquake occured in region: 5 km S Monte Cavallo (MC), on

  • 28-09-1997 23:55:39 (UTC)
  • 29-09-1997 01:55:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9460, 13.0070 at 10 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
Monte Cavallo MC 5 145 145
Visso MC 7 1107 1252
Preci PG 8 724 1976
Sellano PG 9 1079 3055
Ussita MC 11 444 3499
Pieve Torina MC 12 1458 4957
Fiordimonte MC 12 202 5159
Castelsantangelo sul Nera MC 13 281 5440
Pievebovigliana MC 15 866 6306
Serravalle di Chienti MC 15 1070 7376
Muccia MC 16 915 8291
Fiastra MC 16 559 8850
Cerreto di Spoleto PG 16 1075 9925
Acquacanina MC 17 121 10046
Norcia PG 18 4957 15003
Bolognola MC 19 142 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
53 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
100 Km S of Fano (60888 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 1997-09-28
23:55:39
42.946 13.007 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 283929
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 23:55:39 ± 0.358
Latitude 42.9460 ± 0.0101
Longitude 13.0070 ± 0.0562
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 283929

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) 4714.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 207
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00680
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 283929
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1997-09-28T23:56:06.34 10.0 undecidable manual SG 347 0.7548 0.1 0.7
--.MNS.Z. 1997-09-28T23:56:01.24 10.0 undecidable manual SG 202 0.5994 -0.06 0.8
--.ARV.Z. 1997-09-28T23:55:59.60 10.0 undecidable manual SG 355 0.5439 -0.45 0.6
--.FB9.Z. 1997-09-28T23:55:55.37 10.0 undecidable manual PG 347 0.7548 0.3 1.5
--.MNS.Z. 1997-09-28T23:55:52.10 10.0 undecidable manual PG 202 0.5994 -0.21 1.9
--.ARV.Z. 1997-09-28T23:55:50.86 10.0 undecidable manual PG 355 0.5439 -0.32 1.8
--.ASS.Z. 1997-09-28T23:55:49.78 10.0 undecidable manual SG 294 0.2775 -1.05 0.1
--.ASS.Z. 1997-09-28T23:55:46.98 10.0 undecidable manual PG 294 0.2775 0.8 0.6
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