Earthquake with magnitude of Md 2.4 on date 02-03-1985 and time 22:58:06 (Italy) in region 4 km NE Monteleone di Spoleto (PG)

A magnitude Md 2.4 earthquake occured in region: 4 km NE Monteleone di Spoleto (PG), on

  • 02-03-1985 21:58:06 (UTC)
  • 02-03-1985 22:58:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.68, 12.97 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 4 599 599
Poggiodomo PG 4 117 716
Cascia PG 5 3217 3933
Scheggino PG 12 461 4394
Sant'Anatolia di Narco PG 12 564 4958
Vallo di Nera PG 13 364 5322
Leonessa RI 14 2435 7757
Polino TR 15 233 7990
Cerreto di Spoleto PG 16 1075 9065
Norcia PG 16 4957 14022
Ferentillo TR 16 1913 15935
Cittareale RI 17 482 16417
Montefranco TR 19 1276 17693
Spoleto PG 20 38218 55911
Arrone TR 20 2763 58674

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Terni (111501 inhabitants)
37 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
60 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
77 Km E of Viterbo (67173 inhabitants)
79 Km N of Guidonia Montecelio (88673 inhabitants)
81 Km N of Tivoli (56533 inhabitants)
97 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 2.4
ML-VAX 2.5
1985-03-02
21:58:06
42.69 12.97 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 2849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-02 21:58:06 ± 0.368
Latitude 42.69 ± 0.02
Longitude 12.97 ± 0.05
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2849

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) 4741.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.01036
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 2849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:42

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 2849
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 Takeoff_angle Residual Weight
--.SD1.Z. 1985-03-02T21:58:30.00 10.0 undecidable manual PN 147 0.0104 1.84 0.1
--.AS1.Z. 1985-03-02T21:58:23.00 10.0 undecidable manual SG 328 0.004 0.69 0.7
--.AR1.Z. 1985-03-02T21:58:22.00 10.0 undecidable manual PG 358 0.0073 -0.36 2.1
--.MNS.Z. 1985-03-02T21:58:19.40 10.0 undecidable manual SG 215 0.0032 -0.52 0.8
--.AS1.Z. 1985-03-02T21:58:15.50 10.0 undecidable manual PG 328 0.004 0.02 1.5
--.AQU.Z. 1985-03-02T21:58:14.60 10.0 undecidable manual PG 135 0.0041 -1.23 0.5
--.MNS.Z. 1985-03-02T21:58:13.70 10.0 undecidable manual PG 215 0.0032 -0.4 1.4
--.PO9.Z. 1985-03-02T21:58:12.00 10.0 undecidable manual SG 189 0.001 0.36 0.6
--.PO9.Z. 1985-03-02T21:58:09.50 10.0 undecidable manual PG 189 0.001 0.18 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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