Earthquake with magnitude of Md 2.6 on date 18-06-1985 and time 13:02:59 (Italy) in region 3 km SW Campello sul Clitunno (PG)

A magnitude Md 2.6 earthquake occured in region: 3 km SW Campello sul Clitunno (PG), on

  • 18-06-1985 11:02:59 (UTC)
  • 18-06-1985 13:02:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.74 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 4 2442 2442
Castel Ritaldi PG 6 3278 5720
Spoleto PG 8 38218 43938
Trevi PG 8 8469 52407
Vallo di Nera PG 11 364 52771
Sant'Anatolia di Narco PG 11 564 53335
Montefalco PG 12 5679 59014
Scheggino PG 13 461 59475
Giano dell'Umbria PG 14 3846 63321
Cerreto di Spoleto PG 15 1075 64396
Foligno PG 17 57155 121551
Sellano PG 18 1079 122630
Bevagna PG 18 5081 127711
Massa Martana PG 18 3770 131481
Poggiodomo PG 19 117 131598
Gualdo Cattaneo PG 19 6155 137753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km S of Foligno (57155 inhabitants)
28 Km N of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
68 Km NE of Viterbo (67173 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
94 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 2.6 1985-06-18
11:02:59
42.81 12.74 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 8709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-18 11:02:59 ± 0.556
Latitude 42.81 ± 0.03
Longitude 12.74 ± 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 8709

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) 3924.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 233
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00899
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 8709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:12:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CH1.Z. 1985-06-18T11:03:35.00 10.0 undecidable manual SG 325 0.009 1.67 0
--.AR1.Z. 1985-06-18T11:03:24.00 10.0 undecidable manual SG 11 0.0063 0.19 0.6
--.ALP.Z. 1985-06-18T11:03:21.50 10.0 undecidable manual SG 92 0.0054 0.96 0.3
--.CH1.Z. 1985-06-18T11:03:19.00 10.0 undecidable manual PG 325 0.009 0.11 1.3
--.AM1.Z. 1985-06-18T11:03:18.30 10.0 undecidable manual PG 39 0.0087 -0.02 1.4
--.CM2.Z. 1985-06-18T11:03:17.30 10.0 undecidable manual SG 36 0.0043 0.64 0.6
--.AR1.Z. 1985-06-18T11:03:13.00 10.0 undecidable manual PG 11 0.0063 -0.39 1.3
--.ALP.Z. 1985-06-18T11:03:11.60 10.0 undecidable manual PG 92 0.0054 0.1 1.7
--.AS1.Z. 1985-06-18T11:03:10.00 10.0 undecidable manual SG 345 0.0023 0.41 0.8
--.CM2.Z. 1985-06-18T11:03:08.60 10.0 positive manual PG 36 0.0043 -0.66 1.9
--.AS1.Z. 1985-06-18T11:03:04.50 10.0 undecidable manual PG 345 0.0023 -0.69 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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