Earthquake with magnitude of Md 2.3 on date 03-03-1985 and time 21:43:49 (Italy) in region 2 km NE Monteleone di Spoleto (PG)

A magnitude Md 2.3 earthquake occured in region: 2 km NE Monteleone di Spoleto (PG), on

  • 03-03-1985 20:43:49 (UTC)
  • 03-03-1985 21:43:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.67, 12.96 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 2 599 599
Poggiodomo PG 5 117 716
Cascia PG 7 3217 3933
Scheggino PG 12 461 4394
Leonessa RI 12 2435 6829
Sant'Anatolia di Narco PG 12 564 7393
Vallo di Nera PG 14 364 7757
Polino TR 14 233 7990
Ferentillo TR 15 1913 9903
Cerreto di Spoleto PG 17 1075 10978
Cittareale RI 17 482 11460
Norcia PG 17 4957 16417
Montefranco TR 18 1276 17693
Arrone TR 19 2763 20456
Rivodutri RI 19 1253 21709
Morro Reatino RI 19 373 22082
Spoleto PG 20 38218 60300
Posta RI 20 694 60994
Poggio Bustone RI 20 2055 63049

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Terni (111501 inhabitants)
38 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
61 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
76 Km E of Viterbo (67173 inhabitants)
77 Km N of Guidonia Montecelio (88673 inhabitants)
80 Km N of Tivoli (56533 inhabitants)
95 Km NE of Roma (2864731 inhabitants)
99 Km W of Montesilvano (53738 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 2.3 1985-03-03
20:43:49
42.67 12.96 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 2929
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-03 20:43:49 ± 0.22
Latitude 42.67 ± 0.01
Longitude 12.96 ± 0.03
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2929

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) 2392.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01028
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 2929
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
--.SD1.Z. 1985-03-03T20:44:28.00 10.0 undecidable manual SN 146 0.0103 0.52 0.2
--.SD1.Z. 1985-03-03T20:44:12.00 10.0 undecidable manual PN 146 0.0103 0.55 0.6
--.AS1.Z. 1985-03-03T20:44:06.00 10.0 undecidable manual SG 329 0.004 -0.05 0.8
--.AR1.Z. 1985-03-03T20:44:06.00 10.0 undecidable manual PG 358 0.0074 -0.02 1.6
--.MNS.Z. 1985-03-03T20:44:03.00 10.0 undecidable manual SG 215 0.0032 0.08 1.2
--.AS1.Z. 1985-03-03T20:43:59.00 10.0 undecidable manual PG 329 0.004 -0.08 2
--.AQU.Z. 1985-03-03T20:43:58.00 10.0 undecidable manual PG 134 0.004 -1.11 0.4
--.MNS.Z. 1985-03-03T20:43:56.50 10.0 undecidable manual PG 215 0.0032 -0.77 0.9
--.PO9.Z. 1985-03-03T20:43:54.50 10.0 undecidable manual SG 188 0.0008 -0.08 0.8
--.PO9.Z. 1985-03-03T20:43:53.00 10.0 undecidable manual PG 188 0.0008 0.55 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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