Earthquake with magnitude of Md 2.8 on date 13-10-1986 and time 17:16:36 (Italy) in region 5 km NW Montemonaco (AP)

A magnitude Md 2.8 earthquake occured in region: 5 km NW Montemonaco (AP), on

  • 13-10-1986 16:16:36 (UTC)
  • 13-10-1986 17:16:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.92, 13.28 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
Montemonaco AP 5 604 604
Montefortino FM 6 1178 1782
Amandola FM 9 3629 5411
Bolognola MC 9 142 5553
Montegallo AP 10 523 6076
Castelsantangelo sul Nera MC 11 281 6357
Ussita MC 12 444 6801
Comunanza AP 12 3166 9967
Sarnano MC 13 3264 13231
Acquacanina MC 15 121 13352
Palmiano AP 15 196 13548
Visso MC 16 1107 14655
Fiastra MC 16 559 15214
Smerillo FM 16 365 15579
Montefalcone Appennino FM 16 424 16003
Gualdo MC 17 815 16818
Arquata del Tronto AP 17 1178 17996
Roccafluvione AP 18 2010 20006
Monte San Martino MC 18 765 20771
Force AP 18 1354 22125
Venarotta AP 18 2066 24191
Penna San Giovanni MC 19 1108 25299
Fiordimonte MC 20 202 25501

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km NW of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
64 Km N of L'Aquila (69753 inhabitants)
66 Km NE of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
80 Km S of Ancona (100861 inhabitants)
85 Km NW of Montesilvano (53738 inhabitants)
92 Km NW of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 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 2.8 1986-10-13
16:16:36
42.93 13.28 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 35869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-10-13 16:16:36 ± 0.375
Latitude 42.93 ± 0.02
Longitude 13.28 ± 0.05
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 35869

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) 4752.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00429
Epicentral distance of station farthest from the epicenter (degree) 0.01141
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:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 35869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-10-13T16:17:17.50 10.0 undecidable manual SN 305 0.0107 1.17 0.2
--.CRE.Z. 1986-10-13T16:17:00.10 10.0 undecidable manual PN 305 0.0107 0.74 0.7
--.SD1.Z. 1986-10-13T16:17:00.50 10.0 undecidable manual PN 161 0.0114 -0.05 1.3
--.AQU.Z. 1986-10-13T16:16:58.00 10.0 undecidable manual SG 170 0.0052 0.39 0.6
--.ARV.Z. 1986-10-13T16:16:58.50 10.0 undecidable manual SG 336 0.0056 -0.57 0.7
--.ASS.Z. 1986-10-13T16:16:53.00 10.0 undecidable manual SG 286 0.0043 -1.41 0.1
--.ARV.Z. 1986-10-13T16:16:49.00 10.0 undecidable manual PG 336 0.0056 -0.39 1.4
--.AQU.Z. 1986-10-13T16:16:48.00 10.0 undecidable manual PG 170 0.0052 -0.55 1.2
--.ASS.Z. 1986-10-13T16:16:47.00 10.0 positive manual PG 286 0.0043 0.29 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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