Earthquake with magnitude of Md 2.1 on date 06-06-1993 and time 05:43:18 (Italy) in region 5 km NW Nocera Umbra (PG)

A magnitude Md 2.1 earthquake occured in region: 5 km NW Nocera Umbra (PG), on

  • 06-06-1993 03:43:18 (UTC)
  • 06-06-1993 05:43:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1420, 12.7520 at 4 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 5 5839 5839
Valtopina PG 9 1398 7237
Gualdo Tadino PG 10 15208 22445
Valfabbrica PG 12 3389 25834
Assisi PG 14 28299 54133
Fiuminata MC 16 1402 55535
Sefro MC 16 422 55957
Fossato di Vico PG 17 2840 58797
Spello PG 18 8645 67442
Serravalle di Chienti MC 18 1070 68512
Bastia Umbra PG 18 21874 90386
Pioraco MC 19 1134 91520

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Foligno (57155 inhabitants)
30 Km E of Perugia (166134 inhabitants)
65 Km N of Terni (111501 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
81 Km S of Fano (60888 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
94 Km NW of Teramo (54892 inhabitants)
96 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
ML-VAX 1.5
1993-06-06
03:43:18
43.142 12.752 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 186889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-06-06 03:43:18 ± 0.172
Latitude 43.1420 ± 0.0096
Longitude 12.7520 ± 0.0243
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 186889

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) 2244.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.00939
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 186889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:55:33

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 186889
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. 1993-06-06T03:43:45.38 10.0 undecidable manual SG 183 0.7548 -0.87 0
--.PGD.Z. 1993-06-06T03:43:39.99 10.0 undecidable manual PG 314 1.0434 0.01 0.9
--.MNS.Z. 1993-06-06T03:43:34.89 10.0 negative manual PG 183 0.7548 0.26 1.5
--.ARV.Z. 1993-06-06T03:43:33.59 10.0 undecidable manual SG 21 0.3774 0 0.6
--.ARV.Z. 1993-06-06T03:43:27.16 10.0 undecidable manual PG 21 0.3774 -0.16 1.2
--.ASS.Z. 1993-06-06T03:43:22.84 10.0 undecidable manual SG 222 0.0999 -0.26 0.4
--.ASS.Z. 1993-06-06T03:43:21.35 10.0 positive manual PG 222 0.0999 0.08 1.4
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