Earthquake with magnitude of Md 2.2 on date 13-10-1997 and time 00:00:51 (Italy) in region 4 km NE Cerreto di Spoleto (PG)

A magnitude Md 2.2 earthquake occured in region: 4 km NE Cerreto di Spoleto (PG), on

  • 12-10-1997 22:00:51 (UTC)
  • 13-10-1997 00:00:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8500, 12.9330 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
Cerreto di Spoleto PG 4 1075 1075
Sellano PG 4 1079 2154
Preci PG 9 724 2878
Vallo di Nera PG 11 364 3242
Campello sul Clitunno PG 13 2442 5684
Norcia PG 15 4957 10641
Sant'Anatolia di Narco PG 15 564 11205
Poggiodomo PG 15 117 11322
Trevi PG 15 8469 19791
Visso MC 16 1107 20898
Cascia PG 16 3217 24115
Monte Cavallo MC 17 145 24260
Scheggino PG 17 461 24721
Castelsantangelo sul Nera MC 19 281 25002
Ussita MC 20 444 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
53 Km SE of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
99 Km N of Tivoli (56533 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
ML-VAX 2.0
1997-10-12
22:00:51
42.85 12.933 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 296919
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-12 22:00:51 ± 0.179
Latitude 42.8500 ± 0.0062
Longitude 12.9330 ± 0.0238
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 296919

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) 2061.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
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) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00761
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 296919
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:39:14

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 296919
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. 1997-10-12T22:01:22.70 10.0 undecidable manual SG 352 0.8436 0.22 0.4
--.ARV.Z. 1997-10-12T22:01:14.82 10.0 undecidable manual SG 0 0.6438 -0.59 0.1
--.MNS.Z. 1997-10-12T22:01:10.15 10.0 undecidable manual SG 201 0.4995 -0.52 0.1
--.FB9.Z. 1997-10-12T22:01:08.89 10.0 undecidable manual PG 352 0.8436 -0.23 1
--.ARV.Z. 1997-10-12T22:01:05.64 10.0 undecidable manual PG 0 0.6438 0.24 1.1
--.ASS.Z. 1997-10-12T22:01:03.00 10.0 undecidable manual SG 315 0.2886 -0.22 0.5
--.MNS.Z. 1997-10-12T22:01:02.76 10.0 positive manual PG 201 0.4995 0.09 3.5
--.ASS.Z. 1997-10-12T22:00:58.60 10.0 undecidable manual PG 315 0.2886 0.24 1.2
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