Earthquake with magnitude of Md 2.5 on date 27-03-1985 and time 03:28:06 (UTC) in region 3 km E Ferentillo (TR)

A magnitude Md 2.5 earthquake occured in region: 3 km E Ferentillo (TR), on

  • 27-03-1985 03:28:06 (UTC)
  • 27-03-1985 04:28:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.62, 12.83 at 5 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
Ferentillo TR 4 1913 1913
Polino TR 4 233 2146
Montefranco TR 6 1276 3422
Arrone TR 7 2763 6185
Scheggino PG 10 461 6646
Monteleone di Spoleto PG 10 599 7245
Morro Reatino RI 11 373 7618
Labro RI 11 374 7992
Rivodutri RI 12 1253 9245
Leonessa RI 13 2435 11680
Sant'Anatolia di Narco PG 13 564 12244
Poggiodomo PG 13 117 12361
Poggio Bustone RI 14 2055 14416
Colli sul Velino RI 14 533 14949
Spoleto PG 15 38218 53167
Terni TR 17 111501 164668
Vallo di Nera PG 17 364 165032
Cantalice RI 18 2755 167787
Cascia PG 18 3217 171004
Greccio RI 19 1558 172562
Stroncone TR 19 4917 177479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Terni (111501 inhabitants)
39 Km S of Foligno (57155 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Viterbo (67173 inhabitants)
65 Km SE of Perugia (166134 inhabitants)
70 Km N of Guidonia Montecelio (88673 inhabitants)
72 Km W of Teramo (54892 inhabitants)
73 Km N of Tivoli (56533 inhabitants)
86 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 2.5 1985-03-27
03:28:06
42.62 12.83 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3719
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-27 03:28:06 ± 0.15
Latitude 42.62 ± 0.01
Longitude 12.83 ± 0.01
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3719

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) 1507.6
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 3719
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-03-27T03:28:37.00 10.0 undecidable manual SG 5 0.0079 -0.3 0.2
--.SD1.Z. 1985-03-27T03:28:29.00 10.0 undecidable manual PN 141 0.0104 0.01 1
--.AR1.Z. 1985-03-27T03:28:25.00 10.0 undecidable manual PG 5 0.0079 0.86 0.1
--.AS1.Z. 1985-03-27T03:28:24.00 10.0 undecidable manual SG 343 0.0041 0.18 0.7
--.AS1.Z. 1985-03-27T03:28:16.00 10.0 undecidable manual PG 343 0.0041 -0.36 0.6
--.MNS.Z. 1985-03-27T03:28:16.50 10.0 undecidable manual SG 205 0.0023 0.09 0.9
--.MNS.Z. 1985-03-27T03:28:12.00 10.0 undecidable manual PG 205 0.0023 -0.08 1.6
--.PO9.Z. 1985-03-27T03:28:10.00 10.0 undecidable manual SG 120 0.0008 -0.14 0.6
--.PO9.Z. 1985-03-27T03:28:08.50 10.0 negative manual PG 120 0.0008 0.04 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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