Earthquake with magnitude of Md 4.0 on date 13-10-1997 and time 15:09:19 (Italy) in region 4 km SW Preci (PG)

A magnitude Md 4.0 earthquake occured in region: 4 km SW Preci (PG), on

  • 13-10-1997 13:09:19 (UTC)
  • 13-10-1997 15:09:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13 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 4 724 724
Sellano PG 7 1079 1803
Cerreto di Spoleto PG 8 1075 2878
Visso MC 10 1107 3985
Norcia PG 11 4957 8942
Castelsantangelo sul Nera MC 13 281 9223
Ussita MC 14 444 9667
Monte Cavallo MC 15 145 9812
Vallo di Nera PG 15 364 10176
Cascia PG 16 3217 13393
Poggiodomo PG 18 117 13510
Campello sul Clitunno PG 19 2442 15952
Sant'Anatolia di Narco PG 20 564 16516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
62 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 4.0
ML-MEDNET 4.1
1997-10-13
13:09:19
42.86 13 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 297809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-13 13:09:19 ± 0.312
Latitude 42.86 ± 0.01
Longitude 13.00 ± 0.02
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 297809

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) 1832.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.01247
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:4

Field Value
Value 4
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 297809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:40:01

ML:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 297809
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:37:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CSNT.Z. 1997-10-13T13:09:46.26 10.0 undecidable manual PN 296 0.0125 0.41 0.6
--.SDI.Z. 1997-10-13T13:09:45.48 10.0 undecidable manual PN 152 0.0117 0.83 0.1
--.SFI.Z. 1997-10-13T13:09:45.37 10.0 undecidable manual PN 321 0.012 0.23 0.9
--.ARV.Z. 1997-10-13T13:09:43.30 10.0 undecidable manual SG 355 0.0057 0 0.6
--.RSM.Z. 1997-10-13T13:09:42.72 10.0 undecidable manual PN 339 0.0102 0.3 0.9
--.RDP.Z. 1997-10-13T13:09:41.73 10.0 undecidable manual PN 190 0.0101 -0.52 0.5
--.CRE.Z. 1997-10-13T13:09:41.33 10.0 undecidable manual PG 314 0.0096 -0.17 1.1
--.AQU.Z. 1997-10-13T13:09:41.49 10.0 undecidable manual SG 149 0.0053 -0.29 0.4
--.RMP.Z. 1997-10-13T13:09:40.87 10.0 undecidable manual PG 191 0.0096 -0.63 0.4
--.MNS.Z. 1997-10-13T13:09:40.70 10.0 undecidable manual SG 206 0.0048 0.04 0.6
--.PQ9.Z. 1997-10-13T13:09:37.55 10.0 undecidable manual PG 160 0.008 -0.54 0.5
--.FB9.Z. 1997-10-13T13:09:36.85 10.0 positive manual PG 348 0.0075 -0.36 1.9
--.AQU.Z. 1997-10-13T13:09:33.90 10.0 undecidable manual PG 149 0.0053 0.61 0.4
--.ARV.Z. 1997-10-13T13:09:33.22 10.0 positive manual PG 355 0.0057 -0.14 2.7
--.MNS.Z. 1997-10-13T13:09:31.55 10.0 positive manual PG 206 0.0048 0.08 2.8
--.ASS.Z. 1997-10-13T13:09:31.87 10.0 undecidable manual SG 307 0.0028 -0.44 0.3
--.ASS.Z. 1997-10-13T13:09:27.30 10.0 positive manual PG 307 0.0028 0.29 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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