Earthquake with magnitude of Md 3.5 on date 14-05-1997 and time 13:22:03 (Italy) in region 4 km N Castel Ritaldi (PG)

A magnitude Md 3.5 earthquake occured in region: 4 km N Castel Ritaldi (PG), on

  • 14-05-1997 11:22:03 (UTC)
  • 14-05-1997 13:22:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 12.66 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
Castel Ritaldi PG 4 3278 3278
Montefalco PG 5 5679 8957
Giano dell'Umbria PG 7 3846 12803
Trevi PG 8 8469 21272
Bevagna PG 10 5081 26353
Campello sul Clitunno PG 10 2442 28795
Gualdo Cattaneo PG 11 6155 34950
Foligno PG 12 57155 92105
Massa Martana PG 14 3770 95875
Spoleto PG 15 38218 134093
Spello PG 15 8645 142738
Cannara PG 17 4305 147043
Collazzone PG 19 3473 150516
Vallo di Nera PG 19 364 150880
Sant'Anatolia di Narco PG 20 564 151444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Foligno (57155 inhabitants)
33 Km N of Terni (111501 inhabitants)
36 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
88 Km W of Teramo (54892 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
95 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
Bulletin
Rev1000
Md 3.5
ML-VAX 2.4
1997-05-14
11:22:03
42.86 12.66 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 268499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-05-14 11:22:03 ± 0.179
Latitude 42.86 ± 0.01
Longitude 12.66 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 268499

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) 3013.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.01732
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:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 268499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:13:49

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 268499
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
--.PQ9.Z. 1997-05-14T11:22:39.00 10.0 undecidable manual SG 146 0.0089 0.73 0.3
--.BDI.Z. 1997-05-14T11:22:37.34 10.0 undecidable manual PN 309 0.0172 0.68 0.8
--.ZC9.Z. 1997-05-14T11:22:37.50 10.0 undecidable manual PN 321 0.0173 0.75 0.7
--.FB9.Z. 1997-05-14T11:22:33.38 10.0 undecidable manual SG 5 0.0075 0.09 0.8
--.AQU.Z. 1997-05-14T11:22:30.93 10.0 undecidable manual SG 132 0.0066 0.86 0.2
--.SDI.Z. 1997-05-14T11:22:29.79 10.0 undecidable manual PN 143 0.0128 -0.06 1.6
--.SFI.Z. 1997-05-14T11:22:26.33 10.0 undecidable manual PN 330 0.0108 -0.45 1.3
--.CSNT.Z. 1997-05-14T11:22:25.82 10.0 undecidable manual PN 302 0.0105 -0.55 1.1
--.RSM.Z. 1997-05-14T11:22:25.30 10.0 undecidable manual PN 351 0.0097 0.16 1.8
--.RMP.Z. 1997-05-14T11:22:24.70 10.0 undecidable manual PG 178 0.0094 0.26 1.6
--.PQ9.Z. 1997-05-14T11:22:23.87 10.0 undecidable manual PG 146 0.0089 0.33 1.5
--.MNS.Z. 1997-05-14T11:22:20.00 10.0 undecidable manual SG 178 0.0042 -1.41 0.1
--.FB9.Z. 1997-05-14T11:22:20.30 10.0 undecidable manual PG 5 0.0075 -0.37 1.6
--.AQU.Z. 1997-05-14T11:22:17.50 10.0 undecidable manual PG 132 0.0066 -1.31 0.3
--.ARV.Z. 1997-05-14T11:22:17.19 10.0 undecidable manual PG 17 0.0061 -0.41 1.5
--.MNS.Z. 1997-05-14T11:22:10.13 10.0 undecidable manual PG! 178 0.0042 -3.68 0
--.ASS.Z. 1997-05-14T11:22:08.55 10.0 undecidable manual PG 358 0.0019 0.41 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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