Earthquake with magnitude of Md 2.1 on date 27-09-1997 and time 10:46:39 (Italy) in region 9 km W Serravalle di Chienti (MC)

A magnitude Md 2.1 earthquake occured in region: 9 km W Serravalle di Chienti (MC), on

  • 27-09-1997 08:46:39 (UTC)
  • 27-09-1997 10:46:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0370, 12.8590 at 10 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 9 1070 1070
Valtopina PG 9 1398 2468
Nocera Umbra PG 10 5839 8307
Monte Cavallo MC 13 145 8452
Sefro MC 14 422 8874
Foligno PG 15 57155 66029
Pieve Torina MC 16 1458 67487
Spello PG 16 8645 76132
Muccia MC 16 915 77047
Sellano PG 17 1079 78126
Fiuminata MC 18 1402 79528
Pievebovigliana MC 19 866 80394
Fiordimonte MC 19 202 80596
Pioraco MC 19 1134 81730
Trevi PG 20 8469 90199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
81 Km NW of Teramo (54892 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
97 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
Md 2.1
ML-VAX 2.0
1997-09-27
08:46:39
43.037 12.859 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 281529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-27 08:46:39 ± 0.274
Latitude 43.0370 ± 0.0124
Longitude 12.8590 ± 0.0315
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 281529

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) 2909.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00785
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 281529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:25:41

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 281529
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
--.CRE.Z. 1997-09-27T08:47:09.71 10.0 undecidable manual SG 311 0.8769 0.07 0.4
--.MNS.Z. 1997-09-27T08:47:02.50 10.0 undecidable manual SG 191 0.6549 -0.24 0.6
--.FB9.Z. 1997-09-27T08:47:01.77 10.0 undecidable manual SG 354 0.6549 -0.72 0.2
--.CRE.Z. 1997-09-27T08:46:58.79 10.0 undecidable manual PG 311 0.8769 1.9 0.1
--.ARV.Z. 1997-09-27T08:46:56.42 10.0 undecidable manual SG 7 0.4551 0.09 0.7
--.MNS.Z. 1997-09-27T08:46:53.20 10.0 undecidable manual PG 191 0.6549 0.11 1.6
--.FB9.Z. 1997-09-27T08:46:53.80 10.0 undecidable manual PG 354 0.6549 0.32 1.5
--.ARV.Z. 1997-09-27T08:46:49.70 10.0 positive manual PG 7 0.4551 -0.14 3.2
--.ASS.Z. 1997-09-27T08:46:46.10 10.0 undecidable manual SG 279 0.1443 -0.29 0.3
--.ASS.Z. 1997-09-27T08:46:43.38 10.0 undecidable manual PG 279 0.1443 -0.03 1.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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