Earthquake with magnitude of Md 1.9 on date 26-09-1997 and time 11:19:55 (Italy) in region 6 km SE Nocera Umbra (PG)

A magnitude Md 1.9 earthquake occured in region: 6 km SE Nocera Umbra (PG), on

  • 26-09-1997 09:19:55 (UTC)
  • 26-09-1997 11:19:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0660, 12.8330 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
Nocera Umbra PG 6 5839 5839
Valtopina PG 6 1398 7237
Serravalle di Chienti MC 10 1070 8307
Sefro MC 13 422 8729
Spello PG 15 8645 17374
Monte Cavallo MC 16 145 17519
Fiuminata MC 16 1402 18921
Foligno PG 16 57155 76076
Muccia MC 17 915 76991
Assisi PG 18 28299 105290
Pioraco MC 18 1134 106424
Pieve Torina MC 18 1458 107882
Gualdo Tadino PG 19 15208 123090

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
58 Km N of Terni (111501 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
88 Km S of Fano (60888 inhabitants)
89 Km SE of Arezzo (99543 inhabitants)
92 Km NW of L'Aquila (69753 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
94 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 1.9 1997-09-26
09:19:55
43.066 12.833 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 279219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 09:19:55 ± 0.232
Latitude 43.0660 ± 0.0042
Longitude 12.8330 ± 0.0285
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 279219

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) 2362.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00615
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 279219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:23:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1997-09-26T09:20:17.74 10.0 undecidable manual SG 356 0.6216 0.26 0.1
--.ARV.Z. 1997-09-26T09:20:11.29 10.0 undecidable manual SG 10 0.4329 -0.18 0.4
--.MNS.Z. 1997-09-26T09:20:09.29 10.0 undecidable manual PG 189 0.6882 0 1.7
--.FB9.Z. 1997-09-26T09:20:07.93 10.0 undecidable manual PG 356 0.6216 -0.21 0.6
--.ARV.Z. 1997-09-26T09:20:04.82 10.0 undecidable manual PG 10 0.4329 0.15 1.2
--.ASS.Z. 1997-09-26T09:20:01.45 10.0 undecidable manual SG 268 0.1221 -0.04 0.8
--.ASS.Z. 1997-09-26T09:19:58.94 10.0 undecidable manual PG 268 0.1221 0.04 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