Earthquake with magnitude of Md 2.4 on date 11-09-1997 and time 22:04:17 (Italy) in region 8 km SW Serravalle di Chienti (MC)

A magnitude Md 2.4 earthquake occured in region: 8 km SW Serravalle di Chienti (MC), on

  • 11-09-1997 20:04:17 (UTC)
  • 11-09-1997 22:04:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.03, 12.87 at 15 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 8 1070 1070
Valtopina PG 10 1398 2468
Monte Cavallo MC 11 145 2613
Nocera Umbra PG 11 5839 8452
Sefro MC 15 422 8874
Pieve Torina MC 15 1458 10332
Muccia MC 15 915 11247
Foligno PG 16 57155 68402
Sellano PG 16 1079 69481
Spello PG 17 8645 78126
Pievebovigliana MC 18 866 78992
Fiordimonte MC 18 202 79194
Fiuminata MC 18 1402 80596
Pioraco MC 19 1134 81730
Trevi PG 20 8469 90199
Camerino MC 20 6974 97173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
40 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
79 Km NW of Teramo (54892 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
94 Km SE of Arezzo (99543 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
Rev 1000 Md 2.4
ML-VAX 2.0
1997-09-11
20:04:17
43.03 12.87 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 277589
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-11 20:04:17 ± 0.241
Latitude 43.03 ± 0.01
Longitude 12.87 ± 0.03
Depth (km) 15 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277589

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) 2841.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00971
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 277589
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:14

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 277589
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. 1997-09-11T20:04:52.90 10.0 undecidable manual SN 158 0.0097 -0.91 0
--.AQU.Z. 1997-09-11T20:04:44.45 10.0 undecidable manual SG 149 0.007 -0.27 0.4
--.PQ9.Z. 1997-09-11T20:04:38.65 10.0 undecidable manual PN 158 0.0097 0.53 0.3
--.ARV.Z. 1997-09-11T20:04:35.00 10.0 undecidable manual SG 6 0.0042 0.08 0.6
--.AQU.Z. 1997-09-11T20:04:33.42 10.0 undecidable manual PG 149 0.007 0.08 1.2
--.ARV.Z. 1997-09-11T20:04:27.55 10.0 positive manual PG 6 0.0042 -0.13 2.6
--.ASS.Z. 1997-09-11T20:04:24.97 10.0 undecidable manual SG 281 0.0015 -0.48 0.2
--.ASS.Z. 1997-09-11T20:04:22.28 10.0 positive manual PG 281 0.0015 0.07 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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