Earthquake with magnitude of ML-MEDNET 3.4 on date 27-09-1997 and time 15:35:04 (Italy) in region 3 km NE Montefalco (PG)

A magnitude ML-MEDNET 3.4 earthquake occured in region: 3 km NE Montefalco (PG), on

  • 27-09-1997 13:35:04 (UTC)
  • 27-09-1997 15:35:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.92, 12.67 at 14 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
Montefalco PG 3 5679 5679
Foligno PG 5 57155 62834
Bevagna PG 6 5081 67915
Trevi PG 8 8469 76384
Spello PG 9 8645 85029
Gualdo Cattaneo PG 10 6155 91184
Castel Ritaldi PG 10 3278 94462
Cannara PG 11 4305 98767
Giano dell'Umbria PG 12 3846 102613
Campello sul Clitunno PG 14 2442 105055
Valtopina PG 17 1398 106453
Assisi PG 18 28299 134752
Bettona PG 19 4367 139119
Collazzone PG 19 3473 142592
Bastia Umbra PG 20 21874 164466
Massa Martana PG 20 3770 168236

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km SW of Foligno (57155 inhabitants)
31 Km SE of Perugia (166134 inhabitants)
40 Km N of Terni (111501 inhabitants)
72 Km NE of Viterbo (67173 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
89 Km SE of Arezzo (99543 inhabitants)
89 Km W of Teramo (54892 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 ML-MEDNET 3.4 1997-09-27
13:35:04
42.92 12.67 13 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 281809
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-27 13:35:04 ± 0.26
Latitude 42.92 ± 0.02
Longitude 12.67 ± 0.04
Depth (km) 13 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 281809

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) 3914.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.01036
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 281809
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. 1997-09-27T13:35:30.69 10.0 undecidable manual SG 5 0.007 -0.81 0.4
--.ARV.Z. 1997-09-27T13:35:27.43 10.0 undecidable manual SG 18 0.0055 1.16 0.2
--.SFI.Z. 1997-09-27T13:35:26.31 10.0 undecidable manual PN 329 0.0104 0.21 1.5
--.RSM.Z. 1997-09-27T13:35:25.19 10.0 undecidable manual PN 351 0.0091 0.88 0.7
--.CSNT.Z. 1997-09-27T13:35:25.68 10.0 undecidable manual PN 299 0.0103 -0.36 1.3
--.PQ9.Z. 1997-09-27T13:35:24.37 10.0 undecidable manual PN 148 0.0093 -0.2 1.6
--.CRE.Z. 1997-09-27T13:35:21.00 10.0 undecidable manual PG 323 0.0079 -0.95 0.7
--.FB9.Z. 1997-09-27T13:35:20.25 10.0 undecidable manual PG 5 0.007 0.12 1.9
--.AQU.Z. 1997-09-27T13:35:19.44 10.0 undecidable manual PG 136 0.007 -0.67 1.2
--.ARV.Z. 1997-09-27T13:35:16.35 10.0 undecidable manual PG 18 0.0055 -0.76 1.1
--.MNS.Z. 1997-09-27T13:35:16.35 10.0 undecidable manual PG 179 0.0048 0.79 1
--.ASS.Z. 1997-09-27T13:35:11.31 10.0 undecidable manual SG 354 0.0013 -0.25 0.7
--.ASS.Z. 1997-09-27T13:35:09.60 10.0 undecidable manual PG 354 0.0013 0.98 0.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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