Earthquake with magnitude of Md 2.0 on date 30-10-1997 and time 22:27:09 (UTC) in region 4 km E Gualdo Tadino (PG)

A magnitude Md 2.0 earthquake occured in region: 4 km E Gualdo Tadino (PG), on

  • 30-10-1997 22:27:09 (UTC)
  • 30-10-1997 23:27:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2410, 12.8340 at 12 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
Gualdo Tadino PG 4 15208 15208
Fossato di Vico PG 8 2840 18048
Esanatoglia MC 9 2034 20082
Fiuminata MC 10 1402 21484
Fabriano AN 12 31480 52964
Sigillo PG 13 2404 55368
Pioraco MC 14 1134 56502
Sefro MC 14 422 56924
Matelica MC 14 9981 66905
Nocera Umbra PG 15 5839 72744
Cerreto d'Esi AN 15 3817 76561
Costacciaro PG 17 1216 77777
Castelraimondo MC 19 4587 82364
Gagliole MC 19 620 82984

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
69 Km S of Fano (60888 inhabitants)
69 Km SW of Ancona (100861 inhabitants)
75 Km S of Pesaro (94582 inhabitants)
77 Km N of Terni (111501 inhabitants)
81 Km E of Arezzo (99543 inhabitants)
94 Km S of Rimini (147750 inhabitants)
96 Km NW of Teramo (54892 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 2.0
ML-VAX 1.5
1997-10-30
22:27:09
43.241 12.834 11 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 308039
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-30 22:27:09 ± 0.239
Latitude 43.2410 ± 0.0110
Longitude 12.8340 ± 0.0171
Depth (km) 11 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 308039

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) 1845.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
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) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.00405
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 308039
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:49:05

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 308039
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
--.NRCA.Z. 1997-10-30T22:27:25.76 10.0 undecidable manual SG 153 0.444 -0.1 0.6
--.FB9.Z. 1997-10-30T22:27:24.88 10.0 undecidable manual SG 354 0.444 -0.88 0
--.FB9.Z. 1997-10-30T22:27:19.23 10.0 undecidable manual PG 354 0.444 0.41 0.7
--.NRCA.Z. 1997-10-30T22:27:18.77 10.0 undecidable manual PG 153 0.444 -0.09 1.6
--.ASS.Z. 1997-10-30T22:27:18.26 10.0 undecidable manual SG 216 0.2109 -0.15 0.7
--.ASS.Z. 1997-10-30T22:27:14.59 10.0 undecidable manual PG 216 0.2109 0.03 2
--.SNTG.Z. 1997-10-30T22:27:13.96 10.0 undecidable manual SG 79 0.0666 -0.23 0.6
--.SNTG.Z. 1997-10-30T22:27:12.32 10.0 undecidable manual PG 79 0.0666 0.19 1.7
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