Earthquake with magnitude of Md 2.5 on date 26-09-1997 and time 10:02:30 (UTC) in region 2 km NW Serravalle di Chienti (MC)

A magnitude Md 2.5 earthquake occured in region: 2 km NW Serravalle di Chienti (MC), on

  • 26-09-1997 10:02:30 (UTC)
  • 26-09-1997 12:02:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0890, 12.9430 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
Serravalle di Chienti MC 2 1070 1070
Sefro MC 7 422 1492
Muccia MC 8 915 2407
Pieve Torina MC 10 1458 3865
Pioraco MC 11 1134 4999
Fiuminata MC 11 1402 6401
Camerino MC 12 6974 13375
Monte Cavallo MC 12 145 13520
Pievebovigliana MC 12 866 14386
Nocera Umbra PG 13 5839 20225
Fiordimonte MC 13 202 20427
Valtopina PG 16 1398 21825
Castelraimondo MC 17 4587 26412
Esanatoglia MC 18 2034 28446
Fiastra MC 18 559 29005
Matelica MC 20 9981 38986
Gagliole MC 20 620 39606

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
63 Km NE of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
84 Km S of Fano (60888 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
96 Km E of Arezzo (99543 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 2.5
ML-VAX 2.5
1997-09-26
10:02:30
43.089 12.943 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 279279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 10:02:30 ± 0.301
Latitude 43.0890 ± 0.0108
Longitude 12.9430 ± 0.0220
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 279279

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) 2149.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.01133
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 279279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:23:44

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 279279
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
--.AQU.Z. 1997-09-26T10:02:59.94 10.0 undecidable manual SG 154 0.7992 0.12 0.7
--.FB9.Z. 1997-09-26T10:02:54.31 10.0 undecidable manual SG 348 0.6105 0.68 0.4
--.SFI.Z. 1997-09-26T10:02:54.40 10.0 undecidable manual PN 315 1.1322 0.97 0.4
--.CSNT.Z. 1997-09-26T10:02:54.15 10.0 undecidable manual PN 288 1.2543 -0.98 0.3
--.PQ9.Z. 1997-09-26T10:02:53.90 10.0 undecidable manual PN 162 1.11 0.74 0.6
--.RSM.Z. 1997-09-26T10:02:49.11 10.0 undecidable manual PG 336 0.9102 -0.36 1.3
--.CRE.Z. 1997-09-26T10:02:48.53 10.0 undecidable manual PG 306 0.888 -0.63 0.9
--.AQU.Z. 1997-09-26T10:02:46.84 10.0 undecidable manual PG 154 0.7992 -0.7 0.8
--.ARV.Z. 1997-09-26T10:02:45.87 10.0 undecidable manual SG 359 0.3996 -0.72 0.3
--.FB9.Z. 1997-09-26T10:02:44.14 10.0 undecidable manual PG 348 0.6105 0.18 1.7
--.ARV.Z. 1997-09-26T10:02:40.50 10.0 positive manual PG 359 0.3996 0.16 3.4
--.ASS.Z. 1997-09-26T10:02:39.45 10.0 undecidable manual SG 262 0.2109 0.37 0.6
--.ASS.Z. 1997-09-26T10:02:35.79 10.0 undecidable manual PG 262 0.2109 0.23 1.6
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