Earthquake with magnitude of Md 3.1 on date 08-10-1986 and time 18:20:50 (Italy) in region 3 km NE Serravalle di Chienti (MC)

A magnitude Md 3.1 earthquake occured in region: 3 km NE Serravalle di Chienti (MC), on

  • 08-10-1986 17:20:50 (UTC)
  • 08-10-1986 18:20:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1, 12.98 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
Serravalle di Chienti MC 3 1070 1070
Muccia MC 5 915 1985
Sefro MC 6 422 2407
Pieve Torina MC 8 1458 3865
Camerino MC 8 6974 10839
Pievebovigliana MC 9 866 11705
Pioraco MC 9 1134 12839
Fiordimonte MC 11 202 13041
Fiuminata MC 11 1402 14443
Monte Cavallo MC 11 145 14588
Castelraimondo MC 14 4587 19175
Nocera Umbra PG 16 5839 25014
Fiastra MC 16 559 25573
Acquacanina MC 17 121 25694
Gagliole MC 18 620 26314
Esanatoglia MC 18 2034 28348
Matelica MC 18 9981 38329
Valtopina PG 19 1398 39727
Serrapetrona MC 19 966 40693

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
83 Km S of Fano (60888 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
98 Km E 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 3.1 1986-10-08
17:20:50
43.1 12.98 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 35599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-10-08 17:20:50 ± 0.457
Latitude 43.10 ± 0.02
Longitude 12.98 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 35599

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) 3911.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.0021
Epicentral distance of station farthest from the epicenter (degree) 0.01619
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:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 35599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:35:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-10-08T17:21:23.50 10.0 undecidable manual SG 305 0.0082 0.86 0.3
--.DUI.Z. 1986-10-08T17:21:23.50 10.0 undecidable manual PN 142 0.0162 1.49 0.2
--.SD1.Z. 1986-10-08T17:21:18.50 10.0 undecidable manual PN 155 0.0136 0.45 0.9
--.CRE.Z. 1986-10-08T17:21:10.00 10.0 undecidable manual PG 305 0.0082 0.98 0.7
--.ARV.Z. 1986-10-08T17:21:06.00 10.0 undecidable manual SG 355 0.0036 -0.08 0.8
--.AQU.Z. 1986-10-08T17:21:05.50 10.0 undecidable manual PG 157 0.0072 -1.46 0.3
--.ARV.Z. 1986-10-08T17:20:59.00 10.0 positive manual PG 355 0.0036 -0.46 2.4
--.ASS.Z. 1986-10-08T17:20:55.50 10.0 positive manual PG 262 0.0021 -0.41 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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