Earthquake with magnitude of ML-VAX 1.8 on date 26-09-1997 and time 21:08:59 (Italy) in region 3 km W Fiastra (MC)

A magnitude ML-VAX 1.8 earthquake occured in region: 3 km W Fiastra (MC), on

  • 26-09-1997 19:08:59 (UTC)
  • 26-09-1997 21:08:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0430, 13.1240 at 3 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
Fiastra MC 3 559 559
Fiordimonte MC 3 202 761
Pievebovigliana MC 4 866 1627
Acquacanina MC 4 121 1748
Pieve Torina MC 6 1458 3206
Muccia MC 8 915 4121
Bolognola MC 10 142 4263
Ussita MC 11 444 4707
Monte Cavallo MC 11 145 4852
Camerino MC 11 6974 11826
Visso MC 13 1107 12933
Cessapalombo MC 13 512 13445
Caldarola MC 14 1823 15268
Serravalle di Chienti MC 14 1070 16338
Sarnano MC 15 3264 19602
Camporotondo di Fiastrone MC 15 563 20165
Serrapetrona MC 16 966 21131
Belforte del Chienti MC 17 1886 23017
Castelsantangelo sul Nera MC 17 281 23298
San Ginesio MC 17 3498 26796
Gualdo MC 18 815 27611
Sefro MC 18 422 28033
Pioraco MC 19 1134 29167
Castelraimondo MC 19 4587 33754
Preci PG 19 724 34478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
60 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
66 Km NE of Terni (111501 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
80 Km N of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 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
ML-VAX 1.8 1997-09-26
19:08:59
43.043 13.124 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 280309
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 19:08:59 ± 0.219
Latitude 43.0430 ± 0.0121
Longitude 13.1240 ± 0.0313
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 280309

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) 2875.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.00421
Epicentral distance of station farthest from the epicenter (degree) 0.01279
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 280309
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(km) Takeoff_angle Residual Weight
--.SFI.Z. 1997-09-26T19:09:41.68 10.0 undecidable manual SN 313 1.2543 -0.02 0.7
--.PQ9.Z. 1997-09-26T19:09:36.11 10.0 undecidable manual SG 168 1.0323 0.24 0.6
--.CRE.Z. 1997-09-26T19:09:35.72 10.0 undecidable manual SG 304 1.0212 0.19 0.5
--.SDI.Z. 1997-09-26T19:09:25.86 10.0 undecidable manual PN 158 1.4208 -0.07 1.6
--.AQU.Z. 1997-09-26T19:09:25.40 10.0 undecidable manual SG 163 0.7104 -0.13 0.8
--.FB9.Z. 1997-09-26T19:09:24.39 10.0 undecidable manual SG 338 0.6882 -0.44 0.3
--.SFI.Z. 1997-09-26T19:09:24.26 10.0 undecidable manual PN 313 1.2543 0.54 0.7
--.CRE.Z. 1997-09-26T19:09:20.24 10.0 undecidable manual PG 304 1.0212 0.09 1.6
--.PQ9.Z. 1997-09-26T19:09:20.55 10.0 undecidable manual PG 168 1.0323 0.2 1.5
--.ARV.Z. 1997-09-26T19:09:17.83 10.0 undecidable manual SG 343 0.4662 0.39 0.5
--.AQU.Z. 1997-09-26T19:09:14.46 10.0 undecidable manual PG 163 0.7104 0.09 1.9
--.FB9.Z. 1997-09-26T19:09:13.31 10.0 undecidable manual PG 338 0.6882 -0.66 0.6
--.MNS.Z. 1997-09-26T19:09:13.64 10.0 undecidable manual PG 206 0.7326 -1.02 0.5
--.ARV.Z. 1997-09-26T19:09:09.63 10.0 undecidable manual PG 343 0.4662 -0.07 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download