Earthquake with magnitude of Md 2.3 on date 18-03-1986 and time 23:34:13 (Italy) in region 5 km SW Campello sul Clitunno (PG)

A magnitude Md 2.3 earthquake occured in region: 5 km SW Campello sul Clitunno (PG), on

  • 18-03-1986 22:34:13 (UTC)
  • 18-03-1986 23:34:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.79, 12.73 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
Campello sul Clitunno PG 5 2442 2442
Castel Ritaldi PG 6 3278 5720
Spoleto PG 6 38218 43938
Trevi PG 10 8469 52407
Sant'Anatolia di Narco PG 11 564 52971
Vallo di Nera PG 11 364 53335
Scheggino PG 12 461 53796
Montefalco PG 13 5679 59475
Giano dell'Umbria PG 13 3846 63321
Cerreto di Spoleto PG 16 1075 64396
Massa Martana PG 17 3770 68166
Acquasparta TR 18 4778 72944
Foligno PG 19 57155 130099
Bevagna PG 19 5081 135180
Poggiodomo PG 19 117 135297
Gualdo Cattaneo PG 19 6155 141452
Ferentillo TR 19 1913 143365
Sellano PG 20 1079 144444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
45 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
81 Km W of Teramo (54892 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 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 1986-03-18
22:34:13
42.79 12.73 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 24459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-03-18 22:34:13 ± 0.172
Latitude 42.79 ± 0.01
Longitude 12.73 ± 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 24459

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) 2809.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00899
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 24459
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:26:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-03-18T22:34:38.50 10.0 undecidable manual SG 12 0.0065 -0.28 0.8
--.CRE.Z. 1986-03-18T22:34:34.00 10.0 undecidable manual PG 325 0.009 0.7 0.8
--.MNS.Z. 1986-03-18T22:34:28.50 10.0 undecidable manual SG 185 0.0036 -0.05 1
--.ARV.Z. 1986-03-18T22:34:28.50 10.0 undecidable manual PG 12 0.0065 0.37 1.6
--.AQU.Z. 1986-03-18T22:34:27.00 10.0 undecidable manual PG? 131 0.0059 0.09 0.9
--.ASS.Z. 1986-03-18T22:34:23.50 10.0 undecidable manual SG 348 0.0024 -0.91 0.1
--.MNS.Z. 1986-03-18T22:34:22.00 10.0 undecidable manual PG? 185 0.0036 -0.22 0.8
--.ASS.Z. 1986-03-18T22:34:19.50 10.0 undecidable manual PG 348 0.0024 -0.34 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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