Earthquake with magnitude of Md 4.0 on date 13-10-1997 and time 13:01:44 (Italy) in region 1 km E Preci (PG)

A magnitude Md 4.0 earthquake occured in region: 1 km E Preci (PG), on

  • 13-10-1997 11:01:44 (UTC)
  • 13-10-1997 13:01:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.88, 13.05 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 1 724 724
Visso MC 7 1107 1831
Castelsantangelo sul Nera MC 9 281 2112
Norcia PG 10 4957 7069
Sellano PG 10 1079 8148
Ussita MC 10 444 8592
Cerreto di Spoleto PG 13 1075 9667
Monte Cavallo MC 14 145 9812
Cascia PG 18 3217 13029
Fiordimonte MC 18 202 13231
Pieve Torina MC 19 1458 14689
Bolognola MC 19 142 14831
Vallo di Nera PG 19 364 15195
Fiastra MC 20 559 15754
Acquacanina MC 20 121 15875

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
99 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
Rev 1000 Md 4.0
ML-MEDNET 4.0
1997-10-13
11:01:44
42.88 13.05 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 297719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-13 11:01:44 ± 0.338
Latitude 42.88 ± 0.01
Longitude 13.05 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 297719

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) 1965.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.01271
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 3
Type of magnitude Md
Reference to an origin 297719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:39:56

ML:4

Field Value
Value 4
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 297719
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
--.FB9.Z. 1997-10-13T11:02:14.61 10.0 undecidable manual SG 346 0.0075 -0.38 0.3
--.CSNT.Z. 1997-10-13T11:02:11.75 10.0 undecidable manual PN 295 0.0127 0.34 0.9
--.SFI.Z. 1997-10-13T11:02:11.17 10.0 undecidable manual PN 319 0.0121 0.67 0.4
--.SDI.Z. 1997-10-13T11:02:10.61 10.0 undecidable manual PN 153 0.0117 0.82 0.3
--.RSM.Z. 1997-10-13T11:02:08.35 10.0 undecidable manual PN 337 0.0102 0.74 0.4
--.ARV.Z. 1997-10-13T11:02:07.96 10.0 undecidable manual SG 352 0.0056 -0.21 0.4
--.RDP.Z. 1997-10-13T11:02:07.16 10.0 undecidable manual PN 192 0.0103 -0.57 0.4
--.CRE.Z. 1997-10-13T11:02:06.54 10.0 undecidable manual PG 312 0.0098 -0.44 0.7
--.MNS.Z. 1997-10-13T11:02:06.56 10.0 undecidable manual SG 208 0.005 0.41 0.3
--.RMP.Z. 1997-10-13T11:02:06.37 10.0 undecidable manual PN 193 0.0098 -0.68 0.3
--.AQU.Z. 1997-10-13T11:02:06.87 10.0 undecidable manual SG 153 0.0052 0.05 0.6
--.PQ9.Z. 1997-10-13T11:02:03.50 10.0 undecidable manual PG 162 0.008 -0.25 1.1
--.FB9.Z. 1997-10-13T11:02:02.50 10.0 positive manual PG 346 0.0075 -0.23 2.2
--.AQU.Z. 1997-10-13T11:01:58.22 10.0 undecidable manual PG 153 0.0052 0.66 0.6
--.ASS.Z. 1997-10-13T11:01:58.47 10.0 undecidable manual SG 302 0.0031 0.2 0.4
--.ARV.Z. 1997-10-13T11:01:58.42 10.0 positive manual PG 352 0.0056 0.07 2.9
--.MNS.Z. 1997-10-13T11:01:57.50 10.0 positive manual PG 208 0.005 -0.13 2.9
--.ASS.Z. 1997-10-13T11:01:52.68 10.0 positive manual PG 302 0.0031 0.05 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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