Earthquake with magnitude of Md 3.7 on date 14-05-1997 and time 13:40:14 (Italy) in region 1 km N Castel Ritaldi (PG)

A magnitude Md 3.7 earthquake occured in region: 1 km N Castel Ritaldi (PG), on

  • 14-05-1997 11:40:14 (UTC)
  • 14-05-1997 13:40:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.83, 12.67 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 1 3278 3278
Montefalco PG 7 5679 8957
Giano dell'Umbria PG 8 3846 12803
Trevi PG 8 8469 21272
Campello sul Clitunno PG 9 2442 23714
Spoleto PG 12 38218 61932
Bevagna PG 12 5081 67013
Gualdo Cattaneo PG 13 6155 73168
Massa Martana PG 14 3770 76938
Foligno PG 14 57155 134093
Vallo di Nera PG 17 364 134457
Sant'Anatolia di Narco PG 17 564 135021
Spello PG 18 8645 143666
Scheggino PG 19 461 144127
Acquasparta TR 19 4778 148905
Cannara PG 20 4305 153210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Foligno (57155 inhabitants)
30 Km N of Terni (111501 inhabitants)
38 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
87 Km W of Teramo (54892 inhabitants)
93 Km N of Guidonia Montecelio (88673 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
97 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 3.7
ML-VAX 2.3
1997-05-14
11:40:14
42.83 12.67 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 268519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-05-14 11:40:14 ± 0.193
Latitude 42.83 ± 0.01
Longitude 12.67 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 268519

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) 3468.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.01918
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 268519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:13:50

ML:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 268519
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
--.SDI.Z. 1997-05-14T11:40:58.88 10.0 undecidable manual SN 142 0.0126 -0.68 0.4
--.GU9.Z. 1997-05-14T11:40:50.40 10.0 undecidable manual PN 315 0.0192 -0.14 1.2
--.PQ9.Z. 1997-05-14T11:40:50.11 10.0 undecidable manual SG 146 0.0087 1.68 0.1
--.BDI.Z. 1997-05-14T11:40:48.27 10.0 undecidable manual PN 309 0.0175 0.42 1.1
--.ZC9.Z. 1997-05-14T11:40:47.79 10.0 undecidable manual PN 321 0.0175 -0.17 1.3
--.PII.Z. 1997-05-14T11:40:46.57 10.0 undecidable manual PN 300 0.0161 0.72 0.9
--.SDI.Z. 1997-05-14T11:40:42.10 10.0 undecidable manual PN 142 0.0126 1.57 0.2
--.ARV.Z. 1997-05-14T11:40:38.40 10.0 undecidable manual SG 16 0.0062 -1.08 0.3
--.SFI.Z. 1997-05-14T11:40:38.50 10.0 undecidable manual PN 331 0.011 0.49 1.4
--.CSNT.Z. 1997-05-14T11:40:36.37 10.0 undecidable manual PN 302 0.0107 -1.18 0.5
--.RSM.Z. 1997-05-14T11:40:36.43 10.0 undecidable manual PN 351 0.01 0.07 1.8
--.RMP.Z. 1997-05-14T11:40:34.50 10.0 undecidable manual PG 178 0.0091 -0.43 1.5
--.PQ9.Z. 1997-05-14T11:40:33.97 10.0 undecidable manual PG 146 0.0087 -0.05 1.8
--.FB9.Z. 1997-05-14T11:40:32.36 10.0 undecidable manual PG 5 0.0077 0.4 1.6
--.MNS.Z. 1997-05-14T11:40:30.46 10.0 undecidable manual SG 179 0.004 -1.14 0.2
--.AQU.Z. 1997-05-14T11:40:28.59 10.0 undecidable manual PG 131 0.0064 -0.74 1.1
--.ARV.Z. 1997-05-14T11:40:27.76 10.0 undecidable manual PG 16 0.0062 -1.09 0.7
--.MNS.Z. 1997-05-14T11:40:24.17 10.0 undecidable manual PG 179 0.004 -0.14 1.8
--.ASS.Z. 1997-05-14T11:40:20.30 10.0 undecidable manual PG 356 0.002 0.77 1.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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