Earthquake with magnitude of Md 1.9 on date 03-02-1986 and time 16:38:18 (Italy) in region 5 km SE Serravalle di Chienti (MC)

A magnitude Md 1.9 earthquake occured in region: 5 km SE Serravalle di Chienti (MC), on

  • 03-02-1986 15:38:18 (UTC)
  • 03-02-1986 16:38:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0350, 12.9740 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
Serravalle di Chienti MC 5 1070 1070
Monte Cavallo MC 5 145 1215
Pieve Torina MC 6 1458 2673
Muccia MC 8 915 3588
Fiordimonte MC 10 202 3790
Pievebovigliana MC 10 866 4656
Sefro MC 13 422 5078
Camerino MC 14 6974 12052
Visso MC 15 1107 13159
Fiastra MC 15 559 13718
Pioraco MC 16 1134 14852
Acquacanina MC 16 121 14973
Sellano PG 17 1079 16052
Ussita MC 17 444 16496
Nocera Umbra PG 17 5839 22335
Fiuminata MC 18 1402 23737
Valtopina PG 18 1398 25135
Preci PG 18 724 25859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
73 Km NW of Teramo (54892 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
98 Km S of Pesaro (94582 inhabitants)
99 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
Bulletin
Rev1000
Md 1.9 1986-02-03
15:38:18
43.035 12.974 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-03 15:38:18 ± 0.327
Latitude 43.0350 ± 0.0204
Longitude 12.9740 ± 0.0262
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22009

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) 3112.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00445
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:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 22009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ALP.Z. 1986-02-03T15:38:36.38 10.0 undecidable manual SG 120 0.4995 -0.58 0.4
--.ALP.Z. 1986-02-03T15:38:29.55 10.0 undecidable manual PG 120 0.4995 0.22 2
--.ARV.Z. 1986-02-03T15:38:29.50 10.0 undecidable manual PG 357 0.4551 0.89 0.5
--.PRG.Z. 1986-02-03T15:38:27.00 10.0 undecidable manual PG 279 0.4218 -0.91 0.9
--.CM8.Z. 1986-02-03T15:38:26.88 10.0 undecidable manual SG 37 0.1998 -0.43 0.6
--.ASS.Z. 1986-02-03T15:38:25.40 10.0 undecidable manual PG 276 0.2331 1.01 0.4
--.CM8.Z. 1986-02-03T15:38:23.55 10.0 positive manual PG 37 0.1998 -0.2 2.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download