Earthquake with magnitude of M 2.0 on date 01-04-1985 and time 22:53:00 (Italy) in region 6 km E Campo Ligure (GE)

A magnitude M 2.0 earthquake occured in region: 6 km E Campo Ligure (GE), on

  • 01-04-1985 20:53:00 (UTC)
  • 01-04-1985 22:53:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.54, 8.78 at 10 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
Campo Ligure GE 6 2955 2955
Masone GE 7 3679 6634
Rossiglione GE 9 2779 9413
Fraconalto AL 10 336 9749
Campomorone GE 10 6996 16745
Voltaggio AL 10 738 17483
Ceranesi GE 10 3875 21358
Casaleggio Boiro AL 11 372 21730
Mornese AL 11 737 22467
Mignanego GE 11 3675 26142
Mele GE 11 2725 28867
Lerma AL 11 869 29736
Bosio AL 12 1227 30963
Tiglieto GE 13 546 31509
Belforte Monferrato AL 13 515 32024
Serra Riccò GE 13 7885 39909
Busalla GE 14 5563 45472
Carrosio AL 14 510 45982
Tagliolo Monferrato AL 14 1581 47563
Montaldeo AL 14 265 47828
Parodi Ligure AL 14 715 48543
Ovada AL 15 11477 60020
Urbe SV 16 700 60720
Ronco Scrivia GE 16 4417 65137
Gavi AL 16 4614 69751
Molare AL 16 2181 71932
Sant'Olcese GE 17 5906 77838
San Cristoforo AL 17 608 78446
Castelletto d'Orba AL 17 2047 80493
Savignone GE 17 3205 83698
Arenzano GE 17 11519 95217
Rocca Grimalda AL 18 1512 96729
Casella GE 18 3144 99873
Silvano d'Orba AL 18 1988 101861
Arquata Scrivia AL 18 6409 108270
Isola del Cantone GE 18 1540 109810
Cremolino AL 18 1086 110896
Cassinelle AL 19 914 111810
Genova GE 19 586655 698465
Cogoleto GE 20 9172 707637

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Genova (586655 inhabitants)
35 Km NE of Savona (61345 inhabitants)
43 Km SE of Alessandria (93943 inhabitants)
60 Km SE of Asti (76202 inhabitants)
78 Km SW of Pavia (72576 inhabitants)
86 Km S of Vigevano (63310 inhabitants)
92 Km SW of Piacenza (102191 inhabitants)
97 Km NW of La Spezia (93959 inhabitants)
99 Km E of Cuneo (56081 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 1985-04-01
20:53:00
44.54 8.78 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 3889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-01 20:53:00 ± 0.493
Latitude 44.54 ± 0.03
Longitude 8.78 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3889

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) 3966.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 247
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00615
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

M:2

Field Value
Value 2
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 3889
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
--.ROB.Z. 1985-04-01T20:53:23.60 10.0 undecidable manual SG 249 0.0062 -0.73 0.1
--.FIN.Z. 1985-04-01T20:53:19.30 10.0 undecidable manual SG 230 0.0047 0.17 0.8
--.ROB.Z. 1985-04-01T20:53:14.00 10.0 undecidable manual PG 249 0.0062 -0.18 1.6
--.FIN.Z. 1985-04-01T20:53:11.70 10.0 undecidable manual PG 230 0.0047 0.53 0.8
--.GEN.Z. 1985-04-01T20:53:07.30 10.0 undecidable manual SG 137 0.0015 -0.38 0.5
--.GEN.Z. 1985-04-01T20:53:04.60 10.0 undecidable manual PG 137 0.0015 0.04 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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