Earthquake with magnitude of Md 2.0 on date 26-10-1997 and time 08:21:01 (UTC) in region 10 km W Monte Cavallo (MC)

A magnitude Md 2.0 earthquake occured in region: 10 km W Monte Cavallo (MC), on

  • 26-10-1997 08:21:01 (UTC)
  • 26-10-1997 09:21:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9920, 12.8800 at 9 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 10 145 145
Serravalle di Chienti MC 11 1070 1215
Sellano PG 12 1079 2294
Valtopina PG 13 1398 3692
Foligno PG 15 57155 60847
Pieve Torina MC 15 1458 62305
Nocera Umbra PG 15 5839 68144
Trevi PG 17 8469 76613
Muccia MC 17 915 77528
Spello PG 17 8645 86173
Fiordimonte MC 18 202 86375
Preci PG 18 724 87099
Sefro MC 18 422 87521
Visso MC 18 1107 88628
Pievebovigliana MC 19 866 89494
Cerreto di Spoleto PG 19 1075 90569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
42 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
77 Km W of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 inhabitants)
97 Km SE of Arezzo (99543 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 1997-10-26
08:21:01
42.992 12.88 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 306269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-26 08:21:01 ± 0.125
Latitude 42.9920 ± 0.0108
Longitude 12.8800 ± 0.0136
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 306269

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) 1629.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00559
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 306269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:47:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1997-10-26T08:21:24.00 10.0 undecidable manual SG 193 0.6216 0.67 0
--.MNS.Z. 1997-10-26T08:21:13.50 10.0 undecidable manual PG 193 0.6216 -0.46 0.5
--.SNTG.Z. 1997-10-26T08:21:11.93 10.0 undecidable manual SG 9 0.2553 0.06 0.8
--.NRCA.Z. 1997-10-26T08:21:10.32 10.0 undecidable manual SG 132 0.222 -0.3 0.5
--.ASS.Z. 1997-10-26T08:21:08.58 10.0 undecidable manual SG 293 0.1776 -0.16 0.7
--.SNTG.Z. 1997-10-26T08:21:07.32 10.0 undecidable manual PG 9 0.2553 -0.02 2.1
--.NRCA.Z. 1997-10-26T08:21:06.86 10.0 undecidable manual PG 132 0.222 0.24 1.5
--.ASS.Z. 1997-10-26T08:21:05.67 10.0 undecidable manual PG 293 0.1776 0.13 1.9
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