Earthquake with magnitude of Md 2.0 on date 21-03-1998 and time 20:57:28 (Italy) in region 5 km NW Sellano (PG)

A magnitude Md 2.0 earthquake occured in region: 5 km NW Sellano (PG), on

  • 21-03-1998 19:57:28 (UTC)
  • 21-03-1998 20:57:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9280, 12.8910 at 19 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
Sellano PG 5 1079 1079
Monte Cavallo MC 12 145 1224
Cerreto di Spoleto PG 12 1075 2299
Trevi PG 13 8469 10768
Preci PG 13 724 11492
Campello sul Clitunno PG 15 2442 13934
Foligno PG 16 57155 71089
Visso MC 16 1107 72196
Serravalle di Chienti MC 17 1070 73266
Vallo di Nera PG 18 364 73630
Pieve Torina MC 18 1458 75088
Valtopina PG 18 1398 76486
Spello PG 19 8645 85131
Montefalco PG 20 5679 90810

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
45 Km E of Perugia (166134 inhabitants)
73 Km W of Teramo (54892 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 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 1998-03-21
19:57:28
42.928 12.891 19 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 326209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-03-21 19:57:28 ± 0.282
Latitude 42.9280 ± 0.0084
Longitude 12.8910 ± 0.0145
Depth (km) 19 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 326209

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) 1502.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00502
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 326209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:05:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1998-03-21T19:57:47.80 10.0 undecidable manual SG 196 0.555 -0.72 0
--.SNTG.Z. 1998-03-21T19:57:41.00 10.0 undecidable manual SG 6 0.3219 -0.23 0.7
--.MNS.Z. 1998-03-21T19:57:40.12 10.0 undecidable manual PG 196 0.555 0.17 1.4
--.ASS.Z. 1998-03-21T19:57:38.90 10.0 undecidable manual SG 307 0.2109 -0.01 0.9
--.NRCA.Z. 1998-03-21T19:57:36.97 10.0 undecidable manual SG 120 0.1776 -0.29 0.6
--.SNTG.Z. 1998-03-21T19:57:35.50 10.0 undecidable manual PG 6 0.3219 -0.23 1.6
--.ASS.Z. 1998-03-21T19:57:34.15 10.0 undecidable manual PG 307 0.2109 0.22 1.7
--.NRCA.Z. 1998-03-21T19:57:33.79 10.0 undecidable manual PG 120 0.1776 0.34 1.2
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