Earthquake with magnitude of Md 2.1 on date 11-02-1990 and time 09:10:02 (Italy) in region 3 km W Sellano (PG)

A magnitude Md 2.1 earthquake occured in region: 3 km W Sellano (PG), on

  • 11-02-1990 08:10:02 (UTC)
  • 11-02-1990 09:10:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8930, 12.8950 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
Sellano PG 3 1079 1079
Cerreto di Spoleto PG 8 1075 2154
Preci PG 12 724 2878
Trevi PG 12 8469 11347
Campello sul Clitunno PG 13 2442 13789
Vallo di Nera PG 14 364 14153
Monte Cavallo MC 14 145 14298
Visso MC 16 1107 15405
Foligno PG 17 57155 72560
Sant'Anatolia di Narco PG 18 564 73124
Castel Ritaldi PG 20 3278 76402
Norcia PG 20 4957 81359
Montefalco PG 20 5679 87038

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
48 Km SE of Perugia (166134 inhabitants)
71 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
83 Km NE of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
100 Km N of Guidonia Montecelio (88673 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 1990-02-11
08:10:02
42.893 12.895 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 110079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-02-11 08:10:02 ± 0.215
Latitude 42.8930 ± 0.0128
Longitude 12.8950 ± 0.0182
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 110079

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) 2049.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00210
Epicentral distance of station farthest from the epicenter (degree) 0.00542
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 110079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:42:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1990-02-11T08:10:25.00 10.0 undecidable manual SG 3 0.5994 1.11 0.1
--.MNS.Z. 1990-02-11T08:10:22.16 10.0 undecidable manual SG 197 0.5328 0.69 0.4
--.ALP.Z. 1990-02-11T08:10:21.57 10.0 undecidable manual SG 102 0.4995 0.95 0.2
--.CIO.Z. 1990-02-11T08:10:15.28 10.0 undecidable manual SG 31 0.3552 -0.44 1
--.ARV.Z. 1990-02-11T08:10:15.50 10.0 undecidable manual PG 3 0.5994 0.65 1
--.MNS.Z. 1990-02-11T08:10:13.29 10.0 undecidable manual PG 197 0.5328 -0.16 1.9
--.RM8.Z. 1990-02-11T08:10:12.90 10.0 undecidable manual SG 75 0.2331 0.86 0.3
--.ALP.Z. 1990-02-11T08:10:12.25 10.0 undecidable manual PG 102 0.4995 -0.71 1
--.ASS.Z. 1990-02-11T08:10:11.75 10.0 undecidable manual SG 313 0.2442 -0.55 0.6
--.CIO.Z. 1990-02-11T08:10:09.26 10.0 undecidable manual PG 31 0.3552 -0.87 0.8
--.ASS.Z. 1990-02-11T08:10:08.22 10.0 undecidable manual PG 313 0.2442 0.06 2.2
--.RM8.Z. 1990-02-11T08:10:07.94 10.0 undecidable manual PG 75 0.2331 -0.07 2.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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