Earthquake with magnitude of Md 2.2 on date 28-10-1997 and time 21:33:01 (Italy) in region 3 km S Preci (PG)

A magnitude Md 2.2 earthquake occured in region: 3 km S Preci (PG), on

  • 28-10-1997 20:33:01 (UTC)
  • 28-10-1997 21:33:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.853, 13.04 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
Preci PG 3 724 724
Norcia PG 8 4957 5681
Visso MC 10 1107 6788
Sellano PG 10 1079 7867
Castelsantangelo sul Nera MC 10 281 8148
Cerreto di Spoleto PG 11 1075 9223
Ussita MC 13 444 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 16 145 13029
Vallo di Nera PG 17 364 13393
Poggiodomo PG 18 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km W of Montesilvano (53738 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 1997-10-28
20:33:01
42.853 13.04 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 307689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-28 20:33:01 ± 0.135
Latitude 42.8530 ± 0.0091
Longitude 13.0400 ± 0.0150
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 307689

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) 1586.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00583
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 307689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:48:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1997-10-28T20:33:20.93 10.0 undecidable manual SG 209 0.0048 -0.39 0.3
--.ARV.Z. 1997-10-28T20:33:14.58 10.0 undecidable manual PG 353 0.0058 -0.25 1.1
--.ASS.Z. 1997-10-28T20:33:14.21 10.0 undecidable manual SG 306 0.0032 -0.47 0.2
--.MNS.Z. 1997-10-28T20:33:13.80 10.0 undecidable manual PG 209 0.0048 0.34 0.9
--.SNTG.Z. 1997-10-28T20:33:10.53 10.0 undecidable manual PG 349 0.0036 0.38 0.9
--.ASS.Z. 1997-10-28T20:33:08.96 10.0 undecidable manual PG 306 0.0032 0.05 2
--.NRCA.Z. 1997-10-28T20:33:02.30 10.0 undecidable manual PG 109 0.0005 -0.23 1.5
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