Earthquake with magnitude of Md 2.1 on date 10-09-1985 and time 02:59:48 (Italy) in region 10 km W Monte Cavallo (MC)

A magnitude Md 2.1 earthquake occured in region: 10 km W Monte Cavallo (MC), on

  • 10-09-1985 00:59:48 (UTC)
  • 10-09-1985 02:59:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 12.88 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
Monte Cavallo MC 10 145 145
Serravalle di Chienti MC 10 1070 1215
Valtopina PG 12 1398 2613
Sellano PG 13 1079 3692
Nocera Umbra PG 15 5839 9531
Foligno PG 15 57155 66686
Pieve Torina MC 15 1458 68144
Muccia MC 17 915 69059
Spello PG 17 8645 77704
Trevi PG 17 8469 86173
Sefro MC 18 422 86595
Fiordimonte MC 18 202 86797
Pievebovigliana MC 18 866 87663
Preci PG 19 724 88387
Visso MC 19 1107 89494
Cerreto di Spoleto PG 20 1075 90569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Foligno (57155 inhabitants)
42 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
77 Km W of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
96 Km SE of Arezzo (99543 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
Bulletin
Rev1000
Md 2.1 1985-09-10
00:59:48
43 12.88 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-09-10 00:59:48 ± 0.428
Latitude 43.00 ± 0.02
Longitude 12.88 ± 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 12999

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) 3707.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.00559
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 12999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:16:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-09-10T01:00:09.50 10.0 undecidable manual SG 193 0.0056 -1.14 0.3
--.ALP.Z. 1985-09-10T01:00:07.50 10.0 undecidable manual SG 112 0.0049 -0.57 0.7
--.AR1.Z. 1985-09-10T01:00:06.50 10.0 undecidable manual SG 5 0.0045 -0.11 0.6
--.ALP.Z. 1985-09-10T01:00:02.80 10.0 undecidable manual PG 112 0.0049 2.99 0.1
--.MNS.Z. 1985-09-10T01:00:00.20 10.0 undecidable manual PG 193 0.0056 -1.1 0.9
--.CM2.Z. 1985-09-10T00:59:59.40 10.0 undecidable manual SG 44 0.0024 0.15 1
--.AR1.Z. 1985-09-10T00:59:58.50 10.0 undecidable manual PG 5 0.0045 -0.47 1.4
--.AS1.Z. 1985-09-10T00:59:57.00 10.0 undecidable manual SG 291 0.0015 0.84 0.8
--.CM2.Z. 1985-09-10T00:59:54.00 10.0 positive manual PG 44 0.0024 -0.72 2.7
--.AS1.Z. 1985-09-10T00:59:53.50 10.0 undecidable manual PG 291 0.0015 0.56 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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