ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of M 2.0 on date 27-01-1987 and time 11:48:25 (Italy) in region 2 km SE Carcare (SV)

A magnitude M 2.0 earthquake occured in region: 2 km SE Carcare (SV), on

  • 27-01-1987 10:48:25 (UTC)
  • 27-01-1987 11:48:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.34, 8.31 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
Carcare SV 2 5587 5587
Altare SV 3 2108 7695
Pallare SV 3 923 8618
Plodio SV 6 650 9268
Mallare SV 6 1146 10414
Cosseria SV 7 1105 11519
Cairo Montenotte SV 7 13269 24788
Millesimo SV 9 3383 28171
Cengio SV 9 3563 31734
Bormida SV 10 387 32121
Roccavignale SV 10 752 32873
Quiliano SV 10 7232 40105
Osiglia SV 11 444 40549
Dego SV 12 1985 42534
Murialdo SV 12 841 43375
Vado Ligure SV 13 8336 51711
Vezzi Portio SV 13 809 52520
Giusvalla SV 14 441 52961
Saliceto CN 14 1323 54284
Montezemolo CN 14 259 54543
Orco Feglino SV 14 890 55433
Rialto SV 14 564 55997
Savona SV 14 61345 117342
Castelnuovo di Ceva CN 14 110 117452
Bergeggi SV 15 1129 118581
Pontinvrea SV 15 847 119428
Albissola Marina SV 16 5487 124915
Calice Ligure SV 16 1730 126645
Spotorno SV 16 3803 130448
Piana Crixia SV 16 788 131236
Stella SV 16 3009 134245
Albisola Superiore SV 16 10163 144408
Camerana CN 16 631 145039
Gottasecca CN 17 148 145187
Magliolo SV 18 974 146161
Noli SV 18 2736 148897
Priero CN 18 529 149426
Perlo CN 18 116 149542
Mioglia SV 18 526 150068
Celle Ligure SV 19 5237 155305
Sale delle Langhe CN 19 486 155791
Tovo San Giacomo SV 19 2582 158373
Castelletto Uzzone CN 19 331 158704
Merana AL 19 189 158893
Sale San Giovanni CN 19 183 159076
Finale Ligure SV 20 11711 170787
Massimino SV 20 113 170900
Calizzano SV 20 1475 172375
Giustenice SV 20 977 173352
Pareto AL 20 554 173906

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Savona (61345 inhabitants)
50 Km W of Genova (586655 inhabitants)
61 Km E of Cuneo (56081 inhabitants)
62 Km S of Asti (76202 inhabitants)
68 Km SW of Alessandria (93943 inhabitants)
72 Km NE of Sanremo (54807 inhabitants)
88 Km SE of Moncalieri (57294 inhabitants)
95 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 M 2.0 1987-01-27
10:48:25
44.35 8.31 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 39879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-01-27 10:48:25 ± 0.43
Latitude 44.35 ± 0.01
Longitude 8.31 ± 0.04
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 39879

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) 3222.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 224
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.00631
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

M:2

Field Value
Value 2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 39879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.STV.Z. 1987-01-27T10:48:51.50 10.0 undecidable manual SG 262 0.0063 0.73 0.2
--.STV.Z. 1987-01-27T10:48:40.40 10.0 undecidable manual PG 262 0.0063 0.45 1
--.ROB.Z. 1987-01-27T10:48:36.70 10.0 undecidable manual SG 262 0.0028 -0.76 0.3
--.FIN.Z. 1987-01-27T10:48:32.20 10.0 undecidable manual SG 208 0.0014 0.82 0.2
--.ROB.Z. 1987-01-27T10:48:31.90 10.0 undecidable manual PG 262 0.0028 -0.37 1.8
--.CKI.Z. 1987-01-27T10:48:29.00 10.0 undecidable manual SG 343 0.0006 0.34 0.8
--.FIN.Z. 1987-01-27T10:48:28.30 10.0 undecidable manual PG 208 0.0014 -0.45 1.6
--.CKI.Z. 1987-01-27T10:48:27.00 10.0 undecidable manual PG 343 0.0006 -0.19 2.2
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