Earthquake with magnitude of Md 2.0 on date 29-07-1990 and time 01:43:21 (Italy) in region 4 km E Scheggino (PG)

A magnitude Md 2.0 earthquake occured in region: 4 km E Scheggino (PG), on

  • 28-07-1990 23:43:21 (UTC)
  • 29-07-1990 01:43:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7020, 12.8830 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
Scheggino PG 4 461 461
Poggiodomo PG 5 117 578
Sant'Anatolia di Narco PG 5 564 1142
Vallo di Nera PG 8 364 1506
Monteleone di Spoleto PG 8 599 2105
Cascia PG 11 3217 5322
Ferentillo TR 12 1913 7235
Spoleto PG 12 38218 45453
Polino TR 13 233 45686
Cerreto di Spoleto PG 13 1075 46761
Montefranco TR 15 1276 48037
Campello sul Clitunno PG 16 2442 50479
Arrone TR 16 2763 53242
Leonessa RI 17 2435 55677
Morro Reatino RI 20 373 56050

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Terni (111501 inhabitants)
32 Km SE of Foligno (57155 inhabitants)
58 Km NW of L'Aquila (69753 inhabitants)
60 Km SE of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
71 Km E of Viterbo (67173 inhabitants)
79 Km N of Guidonia Montecelio (88673 inhabitants)
82 Km N of Tivoli (56533 inhabitants)
96 Km NE of Roma (2864731 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 1990-07-28
23:43:21
42.702 12.883 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 123979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-07-28 23:43:21 ± 0.438
Latitude 42.7020 ± 0.0184
Longitude 12.8830 ± 0.0657
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 123979

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) 5741.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.00712
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 123979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:55:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1990-07-28T23:43:49.90 10.0 undecidable manual SG 3 0.7881 1.09 0.4
--.ARV.Z. 1990-07-28T23:43:39.00 10.0 undecidable manual PG 3 0.7881 1.82 0.3
--.CIO.Z. 1990-07-28T23:43:39.25 10.0 undecidable manual SG 20 0.5217 -0.91 0.6
--.ASS.Z. 1990-07-28T23:43:35.50 10.0 undecidable manual SG 334 0.3996 -0.48 0.8
--.MNS.Z. 1990-07-28T23:43:34.67 10.0 undecidable manual SG 205 0.3441 0.22 0.8
--.CIO.Z. 1990-07-28T23:43:31.22 10.0 undecidable manual PG 20 0.5217 -0.96 1.4
--.ASS.Z. 1990-07-28T23:43:29.00 10.0 undecidable manual PG 334 0.3996 -0.77 1.6
--.MNS.Z. 1990-07-28T23:43:28.83 10.0 undecidable manual PG 205 0.3441 -0.06 2.1
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