Earthquake with magnitude of Md 2.0 on date 10-09-1987 and time 16:52:55 (Italy) in region 3 km E Cairo Montenotte (SV)

A magnitude Md 2.0 earthquake occured in region: 3 km E Cairo Montenotte (SV), on

  • 10-09-1987 14:52:55 (UTC)
  • 10-09-1987 16:52:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.39, 8.31 at 9 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
Cairo Montenotte SV 3 13269 13269
Carcare SV 4 5587 18856
Plodio SV 6 650 19506
Cosseria SV 7 1105 20611
Altare SV 7 2108 22719
Dego SV 7 1985 24704
Pallare SV 7 923 25627
Cengio SV 8 3563 29190
Millesimo SV 9 3383 32573
Giusvalla SV 10 441 33014
Roccavignale SV 10 752 33766
Piana Crixia SV 11 788 34554
Mallare SV 11 1146 35700
Pontinvrea SV 12 847 36547
Saliceto CN 12 1323 37870
Quiliano SV 13 7232 45102
Montezemolo CN 14 259 45361
Bormida SV 14 387 45748
Mioglia SV 14 526 46274
Gottasecca CN 14 148 46422
Camerana CN 14 631 47053
Murialdo SV 14 841 47894
Merana AL 15 189 48083
Stella SV 15 3009 51092
Osiglia SV 15 444 51536
Castelnuovo di Ceva CN 15 110 51646
Castelletto Uzzone CN 15 331 51977
Pareto AL 15 554 52531
Savona SV 16 61345 113876
Vado Ligure SV 17 8336 122212
Albissola Marina SV 17 5487 127699
Albisola Superiore SV 17 10163 137862
Spigno Monferrato AL 17 1050 138912
Sassello SV 17 1777 140689
Prunetto CN 17 451 141140
Priero CN 17 529 141669
Monesiglio CN 18 645 142314
Sale delle Langhe CN 18 486 142800
Vezzi Portio SV 18 809 143609
Sale San Giovanni CN 19 183 143792
Bergeggi SV 19 1129 144921
Orco Feglino SV 19 890 145811
Serole AT 19 123 145934
Rialto SV 19 564 146498
Perlo CN 19 116 146614
Pezzolo Valle Uzzone CN 19 344 146958
Celle Ligure SV 19 5237 152195
Gorzegno CN 20 304 152499
Paroldo CN 20 211 152710
Spotorno SV 20 3803 156513

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of Savona (61345 inhabitants)
50 Km W of Genova (586655 inhabitants)
58 Km S of Asti (76202 inhabitants)
60 Km E of Cuneo (56081 inhabitants)
63 Km SW of Alessandria (93943 inhabitants)
76 Km NE of Sanremo (54807 inhabitants)
84 Km SE of Moncalieri (57294 inhabitants)
91 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 2.0 1987-09-10
14:52:55
44.39 8.31 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 55069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-09-10 14:52:55 ± 0.378
Latitude 44.39 ± 0.01
Longitude 8.31 ± 0.04
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 55069

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) 3034.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 240
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00777
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 55069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:53:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PZZ.Z. 1987-09-10T14:53:24.40 10.0 undecidable manual SG 278 0.0078 -0.99 0
--.STV.Z. 1987-09-10T14:53:20.80 10.0 undecidable manual SG 259 0.0064 0.41 0.3
--.IMI.Z. 1987-09-10T14:53:15.20 10.0 undecidable manual SG 212 0.005 -0.35 0.4
--.PZZ.Z. 1987-09-10T14:53:12.90 10.0 undecidable manual PG 278 0.0078 0.25 1
--.STV.Z. 1987-09-10T14:53:10.40 10.0 undecidable manual PG 259 0.0064 0.63 0.3
--.ROB.Z. 1987-09-10T14:53:07.70 10.0 undecidable manual SG 254 0.0029 -0.16 0.7
--.IMI.Z. 1987-09-10T14:53:06.80 10.0 undecidable manual PG 212 0.005 -0.17 1.5
--.FIN.Z. 1987-09-10T14:53:03.30 10.0 undecidable manual SG 202 0.0017 -0.07 0.7
--.ROB.Z. 1987-09-10T14:53:02.40 10.0 undecidable manual PG 254 0.0029 -0.14 1.7
--.FIN.Z. 1987-09-10T14:53:00.10 10.0 undecidable manual PG 202 0.0017 0.16 1.7
--.CKI.Z. 1987-09-10T14:52:59.00 10.0 undecidable manual SG 321 0.0003 0.36 0.4
--.CKI.Z. 1987-09-10T14:52:57.00 10.0 positive manual PG 321 0.0003 -0.21 3.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download