Earthquake with magnitude of Md 2.3 on date 25-01-1998 and time 08:15:08 (Italy) in region 4 km E Valtopina (PG)

A magnitude Md 2.3 earthquake occured in region: 4 km E Valtopina (PG), on

  • 25-01-1998 07:15:08 (UTC)
  • 25-01-1998 08:15:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0460, 12.8030 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
Valtopina PG 4 1398 1398
Nocera Umbra PG 7 5839 7237
Spello PG 12 8645 15882
Serravalle di Chienti MC 13 1070 16952
Foligno PG 13 57155 74107
Assisi PG 15 28299 102406
Sefro MC 16 422 102828
Monte Cavallo MC 17 145 102973
Cannara PG 19 4305 107278
Fiuminata MC 19 1402 108680
Trevi PG 19 8469 117149
Bevagna PG 20 5081 122230

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NE of Foligno (57155 inhabitants)
34 Km E of Perugia (166134 inhabitants)
55 Km N of Terni (111501 inhabitants)
85 Km NW of Teramo (54892 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
88 Km SE of Arezzo (99543 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
91 Km S of Fano (60888 inhabitants)
91 Km NW of L'Aquila (69753 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 2.3 1998-01-25
07:15:08
43.046 12.803 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 321399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-01-25 07:15:08 ± 0.135
Latitude 43.0460 ± 0.0032
Longitude 12.8030 ± 0.0065
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 321399

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) 639.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00599
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 321399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:01:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1998-01-25T07:15:32.50 10.0 undecidable manual SG 187 0.666 0.25 0.1
--.MNS.Z. 1998-01-25T07:15:22.21 10.0 undecidable manual PG 187 0.666 -0.15 0.7
--.NRCA.Z. 1998-01-25T07:15:21.00 10.0 undecidable manual SG 132 0.3108 0.06 0.8
--.SNTG.Z. 1998-01-25T07:15:18.52 10.0 undecidable manual SG 25 0.222 0 0.9
--.NRCA.Z. 1998-01-25T07:15:15.74 10.0 undecidable manual PG 132 0.3108 -0.09 1.6
--.ASS.Z. 1998-01-25T07:15:15.90 10.0 undecidable manual SG 278 0.111 -0.18 0.3
--.SNTG.Z. 1998-01-25T07:15:14.48 10.0 undecidable manual PG 25 0.222 0.04 2.1
--.ASS.Z. 1998-01-25T07:15:12.66 10.0 undecidable manual PG 278 0.111 0.1 1.5
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