Earthquake with magnitude of Md 2.1 on date 18-03-2000 and time 17:50:35 (Italy) in region 4 km W Nocera Umbra (PG)

A magnitude Md 2.1 earthquake occured in region: 4 km W Nocera Umbra (PG), on

  • 18-03-2000 16:50:35 (UTC)
  • 18-03-2000 17:50:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1210, 12.7480 at 22 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 4 5839 5839
Valtopina PG 7 1398 7237
Assisi PG 12 28299 35536
Valfabbrica PG 13 3389 38925
Gualdo Tadino PG 13 15208 54133
Spello PG 16 8645 62778
Sefro MC 17 422 63200
Fiuminata MC 17 1402 64602
Bastia Umbra PG 17 21874 86476
Serravalle di Chienti MC 18 1070 87546
Foligno PG 19 57155 144701
Cannara PG 19 4305 149006
Fossato di Vico PG 19 2840 151846

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Foligno (57155 inhabitants)
29 Km E of Perugia (166134 inhabitants)
63 Km N of Terni (111501 inhabitants)
80 Km E of Arezzo (99543 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km S of Fano (60888 inhabitants)
89 Km S of Pesaro (94582 inhabitants)
93 Km NW of Teramo (54892 inhabitants)
94 Km NE of Viterbo (67173 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 2.1 2000-03-18
16:50:35
43.121 12.748 22 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 384539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2000-03-18 16:50:35 ± 0.786
Latitude 43.1210 ± 0.0180
Longitude 12.7480 ± 0.0381
Depth (km) 22 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 384539

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) 3685.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00356
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 384539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:01:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2000-03-18T16:50:51.50 10.0 undecidable manual SG 20 0.3996 0.23 0.4
--.NRCA.Z. 2000-03-18T16:50:50.24 10.0 undecidable manual SG 136 0.3885 -0.7 0.1
--.SNTG.Z. 2000-03-18T16:50:45.26 10.0 undecidable manual SG 46 0.1887 -0.2 0.5
--.NRCA.Z. 2000-03-18T16:50:44.60 10.0 positive manual PG 136 0.3885 0.09 2.3
--.ARV.Z. 2000-03-18T16:50:43.86 10.0 undecidable manual PG 20 0.3996 -0.84 0.2
--.ASS.Z. 2000-03-18T16:50:42.65 10.0 undecidable manual SG 229 0.0888 -0.79 0.1
--.SNTG.Z. 2000-03-18T16:50:41.78 10.0 positive manual PG 46 0.1887 0.43 1.8
--.ASS.Z. 2000-03-18T16:50:40.39 10.0 positive manual PG 229 0.0888 0.21 2.6
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