Earthquake with magnitude of Md 2.1 on date 03-03-1985 and time 22:04:55 (Italy) in region 6 km W Monteleone di Spoleto (PG)

A magnitude Md 2.1 earthquake occured in region: 6 km W Monteleone di Spoleto (PG), on

  • 03-03-1985 21:04:55 (UTC)
  • 03-03-1985 22:04:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.66, 12.88 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
Monteleone di Spoleto PG 6 599 599
Poggiodomo PG 8 117 716
Scheggino PG 8 461 1177
Polino TR 8 233 1410
Ferentillo TR 9 1913 3323
Sant'Anatolia di Narco PG 10 564 3887
Montefranco TR 11 1276 5163
Arrone TR 12 2763 7926
Leonessa RI 12 2435 10361
Cascia PG 13 3217 13578
Vallo di Nera PG 13 364 13942
Morro Reatino RI 15 373 14315
Spoleto PG 15 38218 52533
Rivodutri RI 16 1253 53786
Labro RI 16 374 54160
Poggio Bustone RI 17 2055 56215
Cerreto di Spoleto PG 19 1075 57290
Colli sul Velino RI 19 533 57823

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
69 Km E of Viterbo (67173 inhabitants)
74 Km N of Guidonia Montecelio (88673 inhabitants)
77 Km N of Tivoli (56533 inhabitants)
91 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
Rev 1000 Md 2.1 1985-03-03
21:04:55
42.66 12.88 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-03 21:04:55 ± 0.13
Latitude 42.66 ± 0.01
Longitude 12.88 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2939

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) 2393.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00397
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 2939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-03-03T21:05:11.50 10.0 undecidable manual SG 337 0.004 -0.13 0.6
--.MNS.Z. 1985-03-03T21:05:08.00 10.0 undecidable manual SG 209 0.0028 0.59 0.1
--.AS1.Z. 1985-03-03T21:05:05.00 10.0 undecidable manual PG 337 0.004 0.16 1.5
--.MNS.Z. 1985-03-03T21:05:02.00 10.0 undecidable manual PG 209 0.0028 -0.41 0.8
--.PO9.Z. 1985-03-03T21:05:00.50 10.0 undecidable manual SG 152 0.0008 -0.01 0.9
--.PO9.Z. 1985-03-03T21:04:58.50 10.0 undecidable manual PG 152 0.0008 0.08 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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