Earthquake with magnitude of Md 2.1 on date 17-09-1986 and time 16:00:03 (Italy) in region 3 km SE Dego (SV)

A magnitude Md 2.1 earthquake occured in region: 3 km SE Dego (SV), on

  • 17-09-1986 14:00:03 (UTC)
  • 17-09-1986 16:00:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.43, 8.34 at 11 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
Dego SV 3 1985 1985
Giusvalla SV 5 441 2426
Cairo Montenotte SV 6 13269 15695
Piana Crixia SV 7 788 16483
Pontinvrea SV 8 847 17330
Carcare SV 9 5587 22917
Mioglia SV 9 526 23443
Merana AL 10 189 23632
Cosseria SV 10 1105 24737
Pareto AL 10 554 25291
Altare SV 11 2108 27399
Plodio SV 11 650 28049
Cengio SV 11 3563 31612
Pallare SV 12 923 32535
Millesimo SV 13 3383 35918
Spigno Monferrato AL 13 1050 36968
Stella SV 13 3009 39977
Saliceto CN 13 1323 41300
Roccavignale SV 14 752 42052
Sassello SV 14 1777 43829
Castelletto Uzzone CN 14 331 44160
Gottasecca CN 14 148 44308
Serole AT 15 123 44431
Camerana CN 15 631 45062
Mombaldone AT 16 209 45271
Mallare SV 16 1146 46417
Malvicino AL 16 85 46502
Montezemolo CN 16 259 46761
Quiliano SV 16 7232 53993
Prunetto CN 17 451 54444
Pezzolo Valle Uzzone CN 17 344 54788
Albisola Superiore SV 17 10163 64951
Albissola Marina SV 18 5487 70438
Monesiglio CN 18 645 71083
Bergolo CN 18 71 71154
Savona SV 18 61345 132499
Castelnuovo di Ceva CN 18 110 132609
Gorzegno CN 18 304 132913
Levice CN 19 231 133144
Murialdo SV 19 841 133985
Bormida SV 19 387 134372
Olmo Gentile AT 19 80 134452
Montechiaro d'Acqui AL 19 560 135012
Roccaverano AT 19 399 135411
Denice AL 19 176 135587
Cartosio AL 19 747 136334
Celle Ligure SV 19 5237 141571
Vado Ligure SV 20 8336 149907
Osiglia SV 20 444 150351

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Savona (61345 inhabitants)
48 Km W of Genova (586655 inhabitants)
53 Km S of Asti (76202 inhabitants)
58 Km SW of Alessandria (93943 inhabitants)
62 Km E of Cuneo (56081 inhabitants)
81 Km NE of Sanremo (54807 inhabitants)
82 Km SE of Moncalieri (57294 inhabitants)
88 Km SE of Torino (890529 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 2.1 1986-09-17
14:00:03
44.43 8.34 11 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 34259
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-09-17 14:00:03 ± 0.58
Latitude 44.43 ± 0.03
Longitude 8.34 ± 0.05
Depth (km) 11 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 34259

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) 5319.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 34259
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:34:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ORX.Z. 1986-09-17T14:00:27.00 10.0 undecidable manual PN 348 0.011 0.34 0.8
--.SOO.Z. 1986-09-17T14:00:20.80 10.0 undecidable manual PG 275 0.0079 -0.56 0.7
--.STV.Z. 1986-09-17T14:00:18.90 10.0 undecidable manual PG 256 0.0066 0.17 1.3
--.ENR.Z. 1986-09-17T14:00:17.60 10.0 undecidable manual PG 253 0.0062 -0.09 1.5
--.IMP.Z. 1986-09-17T14:00:16.60 10.0 undecidable manual PG 211 0.0054 0.44 1.1
--.ROB.Z. 1986-09-17T14:00:11.80 10.0 undecidable manual PG 249 0.0032 0.23 1.5
--.FIN.Z. 1986-09-17T14:00:09.10 10.0 undecidable manual PG 202 0.0021 -0.34 1.4
--.CKI.Z. 1986-09-17T14:00:09.50 10.0 undecidable manual SG 255 0.0003 1.5 0
--.CKI.Z. 1986-09-17T14:00:05.50 10.0 undecidable manual PG 255 0.0003 -0.77 0.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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