Earthquake with magnitude of Md 2.7 on date 02-11-1986 and time 21:31:08 (Italy) in region 5 km SW Castelsantangelo sul Nera (MC)

A magnitude Md 2.7 earthquake occured in region: 5 km SW Castelsantangelo sul Nera (MC), on

  • 02-11-1986 20:31:08 (UTC)
  • 02-11-1986 21:31:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.13 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
Castelsantangelo sul Nera MC 5 281 281
Preci PG 7 724 1005
Norcia PG 8 4957 5962
Visso MC 9 1107 7069
Ussita MC 10 444 7513
Sellano PG 17 1079 8592
Arquata del Tronto AP 17 1178 9770
Montegallo AP 17 523 10293
Montemonaco AP 17 604 10897
Bolognola MC 17 142 11039
Cerreto di Spoleto PG 18 1075 12114
Monte Cavallo MC 18 145 12259
Cascia PG 18 3217 15476
Acquacanina MC 19 121 15597
Fiastra MC 20 559 16156
Montefortino FM 20 1178 17334
Fiordimonte MC 20 202 17536

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
99 Km W of Pescara (121014 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 2.7 1986-11-02
20:31:08
42.86 13.13 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 36599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-11-02 20:31:08 ± 0.214
Latitude 42.86 ± 0.01
Longitude 13.13 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 36599

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) 2392.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00356
Epicentral distance of station farthest from the epicenter (degree) 0.01125
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:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 36599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1986-11-02T20:31:50.00 10.0 undecidable manual SN 155 0.0113 0.07 0.6
--.SD1.Z. 1986-11-02T20:31:33.50 10.0 undecidable manual PN 155 0.0113 1.2 0.2
--.ARV.Z. 1986-11-02T20:31:32.00 10.0 undecidable manual SG 347 0.0058 -0.03 1.2
--.AQU.Z. 1986-11-02T20:31:28.00 10.0 undecidable manual SG 157 0.0049 -0.57 0.3
--.ASS.Z. 1986-11-02T20:31:23.50 10.0 undecidable manual SG 300 0.0036 -0.28 1
--.ARV.Z. 1986-11-02T20:31:21.80 10.0 undecidable manual PG 347 0.0058 -0.17 1.8
--.AQU.Z. 1986-11-02T20:31:19.50 10.0 undecidable manual PG 157 0.0049 -0.47 1.1
--.ASS.Z. 1986-11-02T20:31:17.50 10.0 undecidable manual PG 300 0.0036 0.3 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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