Earthquake with magnitude of Md 2.0 on date 02-12-1997 and time 10:23:49 (Italy) in region 4 km SW Preci (PG)

A magnitude Md 2.0 earthquake occured in region: 4 km SW Preci (PG), on

  • 02-12-1997 09:23:49 (UTC)
  • 02-12-1997 10:23:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.85, 13 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
Preci PG 4 724 724
Sellano PG 7 1079 1803
Cerreto di Spoleto PG 8 1075 2878
Norcia PG 10 4957 7835
Visso MC 11 1107 8942
Castelsantangelo sul Nera MC 13 281 9223
Vallo di Nera PG 15 364 9587
Cascia PG 15 3217 12804
Ussita MC 15 444 13248
Monte Cavallo MC 16 145 13393
Poggiodomo PG 16 117 13510
Campello sul Clitunno PG 19 2442 15952
Sant'Anatolia di Narco PG 19 564 16516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
58 Km SE of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
97 Km N of Guidonia Montecelio (88673 inhabitants)
100 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
Rev 1000 Md 2.0
ML-VAX 2.0
1997-12-02
09:23:49
42.85 13 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 315189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-12-02 09:23:49 ± 0.13
Latitude 42.85 ± 0.01
Longitude 13.00 ± 0.03
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 315189

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) 2664.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
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) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00469
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

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 315189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:55:32

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 315189
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 Takeoff_angle Residual Weight
--.MNS.Z. 1997-12-02T09:24:09.23 10.0 undecidable manual SG 207 0.0047 0.59 0.1
--.SNTG.Z. 1997-12-02T09:24:04.94 10.0 undecidable manual SG 353 0.0036 0.08 0.8
--.ASS.Z. 1997-12-02T09:24:02.13 10.0 undecidable manual SG 309 0.0029 -0.36 0.4
--.MNS.Z. 1997-12-02T09:24:00.33 10.0 undecidable manual PG 207 0.0047 -0.4 0.6
--.SNTG.Z. 1997-12-02T09:23:58.48 10.0 undecidable manual PG 353 0.0036 -0.07 1.9
--.ASS.Z. 1997-12-02T09:23:57.46 10.0 undecidable manual PG 309 0.0029 0.28 1.3
--.NRCA.Z. 1997-12-02T09:23:54.49 10.0 undecidable manual SG 102 0.0007 -0.12 0.8
--.NRCA.Z. 1997-12-02T09:23:52.73 10.0 undecidable manual PG 102 0.0007 0.11 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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