Earthquake with magnitude of Md 2.0 on date 27-09-1998 and time 18:04:45 (Italy) in region 9 km SE Valtopina (PG)

A magnitude Md 2.0 earthquake occured in region: 9 km SE Valtopina (PG), on

  • 27-09-1998 16:04:45 (UTC)
  • 27-09-1998 18:04:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0170, 12.8490 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
Valtopina PG 9 1398 1398
Serravalle di Chienti MC 11 1070 2468
Nocera Umbra PG 12 5839 8307
Monte Cavallo MC 13 145 8452
Foligno PG 14 57155 65607
Spello PG 15 8645 74252
Sellano PG 16 1079 75331
Sefro MC 17 422 75753
Pieve Torina MC 17 1458 77211
Trevi PG 18 8469 85680
Muccia MC 18 915 86595
Fiordimonte MC 20 202 86797
Assisi PG 20 28299 115096
Pievebovigliana MC 20 866 115962

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
80 Km NW of Teramo (54892 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
87 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
93 Km SE of Arezzo (99543 inhabitants)
93 Km S of Fano (60888 inhabitants)
100 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 2.0
ML-VAX 1.5
1998-09-27
16:04:45
43.017 12.849 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 352219
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-09-27 16:04:45 ± 0.111
Latitude 43.0170 ± 0.0073
Longitude 12.8490 ± 0.0096
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 352219

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) 1126.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00575
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 352219
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:29:59

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 352219
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
--.MNS.Z. 1998-09-27T16:05:08.70 10.0 undecidable manual SG 190 0.6327 0.16 0.6
--.ARV.Z. 1998-09-27T16:05:03.29 10.0 undecidable manual SG 8 0.4884 0.45 0.2
--.MNS.Z. 1998-09-27T16:04:58.30 10.0 undecidable manual PG 190 0.6327 -0.32 0.9
--.NRCA.Z. 1998-09-27T16:04:56.70 10.0 undecidable manual SG 133 0.2553 0.27 0.6
--.ARV.Z. 1998-09-27T16:04:55.00 10.0 undecidable manual PG 8 0.4884 -0.43 0.7
--.ASS.Z. 1998-09-27T16:04:52.10 10.0 undecidable manual SG 287 0.1443 -0.04 0.9
--.NRCA.Z. 1998-09-27T16:04:51.36 10.0 undecidable manual PG 133 0.2553 -0.01 2.3
--.ASS.Z. 1998-09-27T16:04:49.42 10.0 undecidable manual PG 287 0.1443 0.22 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download