Earthquake with magnitude of Md 2.7 on date 04-12-1997 and time 00:56:08 (Italy) in region 4 km E Cerreto di Spoleto (PG)

A magnitude Md 2.7 earthquake occured in region: 4 km E Cerreto di Spoleto (PG), on

  • 03-12-1997 23:56:08 (UTC)
  • 04-12-1997 00:56:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.84, 12.97 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 5 1075 1075
Sellano PG 7 1079 2154
Preci PG 8 724 2878
Vallo di Nera PG 11 364 3242
Norcia PG 11 4957 8199
Cascia PG 14 3217 11416
Poggiodomo PG 14 117 11533
Visso MC 15 1107 12640
Campello sul Clitunno PG 16 2442 15082
Sant'Anatolia di Narco PG 16 564 15646
Castelsantangelo sul Nera MC 17 281 15927
Scheggino PG 18 461 16388
Monte Cavallo MC 18 145 16533
Trevi PG 18 8469 25002
Ussita MC 19 444 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
56 Km SE of Perugia (166134 inhabitants)
63 Km W of Teramo (54892 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
98 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 2.7
ML-VAX 2.1
1997-12-03
23:56:08
42.84 12.97 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 315599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-12-03 23:56:08 ± 0.173
Latitude 42.84 ± 0.01
Longitude 12.97 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 315599

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) 1773.8
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 12
Number of defining phases 12
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) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00979
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 315599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:55:54

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 315599
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
--.ARV.Z. 1997-12-03T23:56:33.90 10.0 undecidable manual SG 358 0.0059 0.03 0.6
--.RDP.Z. 1997-12-03T23:56:31.50 10.0 undecidable manual PN 189 0.0098 0.71 0.6
--.PQ9.Z. 1997-12-03T23:56:27.72 10.0 undecidable manual PG 158 0.0079 0.91 0.4
--.MNS.Z. 1997-12-03T23:56:27.34 10.0 undecidable manual SG 205 0.0045 -0.46 0.4
--.FB9.Z. 1997-12-03T23:56:26.51 10.0 undecidable manual PG 350 0.0078 -0.14 1.4
--.SNTG.Z. 1997-12-03T23:56:24.59 10.0 undecidable manual SG 357 0.0037 -0.55 0.4
--.ARV.Z. 1997-12-03T23:56:23.42 10.0 undecidable manual PG 358 0.0059 0.55 0.9
--.AQU.Z. 1997-12-03T23:56:20.57 10.0 undecidable manual PG 146 0.0052 -0.75 0.5
--.MNS.Z. 1997-12-03T23:56:19.35 10.0 undecidable manual PG 205 0.0045 -0.48 1
--.SNTG.Z. 1997-12-03T23:56:17.68 10.0 undecidable manual PG 357 0.0037 -0.62 0.9
--.ASS.Z. 1997-12-03T23:56:16.59 10.0 undecidable manual PG 314 0.0028 0.42 1.3
--.NRCA.Z. 1997-12-03T23:56:11.58 10.0 positive manual PG 91 0.0009 0.05 3.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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