Earthquake with magnitude of Md 2.0 on date 02-04-1986 and time 02:41:38 (Italy) in region 3 km SW Serravalle di Chienti (MC)

A magnitude Md 2.0 earthquake occured in region: 3 km SW Serravalle di Chienti (MC), on

  • 02-04-1986 00:41:38 (UTC)
  • 02-04-1986 02:41:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.06, 12.92 at 21 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
Monte Cavallo MC 10 145 1215
Sefro MC 11 422 1637
Muccia MC 11 915 2552
Pieve Torina MC 11 1458 4010
Nocera Umbra PG 12 5839 9849
Valtopina PG 13 1398 11247
Pievebovigliana MC 14 866 12113
Fiordimonte MC 14 202 12315
Pioraco MC 15 1134 13449
Fiuminata MC 15 1402 14851
Camerino MC 15 6974 21825
Sellano PG 19 1079 22904
Fiastra MC 20 559 23463
Visso MC 20 1107 24570

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Foligno (57155 inhabitants)
43 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
88 Km NW of L'Aquila (69753 inhabitants)
88 Km S of Fano (60888 inhabitants)
95 Km S of Pesaro (94582 inhabitants)
96 Km E of Arezzo (99543 inhabitants)
97 Km NE of Viterbo (67173 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 2.0 1986-04-02
00:41:38
43.06 12.92 21 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 25249
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-04-02 00:41:38 ± 1.088
Latitude 43.06 ± 0.04
Longitude 12.92 ± 0.04
Depth (km) 21 ± 9 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 25249

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) 5729.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
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) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.00397
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 25249
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:27:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1986-04-02T00:41:55.50 10.0 undecidable manual SG 2 0.004 0.22 0.7
--.PRG.Z. 1986-04-02T00:41:52.00 10.0 undecidable manual SG 277 0.0034 -1.45 0.1
--.ASS.Z. 1986-04-02T00:41:49.00 10.0 undecidable manual SG 272 0.0017 0.84 0.5
--.ARV.Z. 1986-04-02T00:41:48.70 10.0 undecidable manual PG 2 0.004 0.45 1.6
--.CM8.Z. 1986-04-02T00:41:47.40 10.0 undecidable manual SG 49 0.0019 -1.29 0.2
--.PRG.Z. 1986-04-02T00:41:46.50 10.0 undecidable manual PG 277 0.0034 -0.69 1.4
--.ASS.Z. 1986-04-02T00:41:45.00 10.0 undecidable manual PG 272 0.0017 0.86 1.2
--.CM8.Z. 1986-04-02T00:41:44.49 10.0 undecidable manual PG 49 0.0019 0.05 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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