Earthquake with magnitude of Md 2.1 on date 18-04-1985 and time 05:47:56 (Italy) in region 3 km W Pradleves (CN)

A magnitude Md 2.1 earthquake occured in region: 3 km W Pradleves (CN), on

  • 18-04-1985 03:47:56 (UTC)
  • 18-04-1985 05:47:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.42, 7.25 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
Pradleves CN 3 250 250
Castelmagno CN 3 66 316
Monterosso Grana CN 6 505 821
Cartignano CN 7 190 1011
San Damiano Macra CN 7 430 1441
Celle di Macra CN 9 100 1541
Roccabruna CN 10 1585 3126
Montemale di Cuneo CN 10 241 3367
Macra CN 10 59 3426
Dronero CN 10 7035 10461
Valgrana CN 11 786 11247
Villar San Costanzo CN 12 1547 12794
Aisone CN 12 248 13042
Demonte CN 13 2003 15045
Marmora CN 13 68 15113
Stroppo CN 13 103 15216
Canosio CN 14 80 15296
Valloriate CN 14 109 15405
Vinadio CN 14 644 16049
Caraglio CN 14 6836 22885
Rittana CN 15 109 22994
Bernezzo CN 15 4104 27098
Valmala CN 16 52 27150
Moiola CN 16 234 27384
Gaiola CN 16 582 27966
Sambuco CN 17 92 28058
Melle CN 17 292 28350
Frassino CN 17 265 28615
Prazzo CN 17 170 28785
Roccasparvera CN 18 741 29526
Sampeyre CN 18 1022 30548
Cervasca CN 18 5013 35561
Elva CN 18 97 35658
Brossasco CN 19 1084 36742
Vignolo CN 19 2600 39342
Pietraporzio CN 19 77 39419
Venasca CN 19 1437 40856
Rossana CN 20 908 41764
Valdieri CN 20 935 42699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Cuneo (56081 inhabitants)
73 Km SW of Moncalieri (57294 inhabitants)
80 Km NW of Sanremo (54807 inhabitants)
80 Km SW of Torino (890529 inhabitants)
92 Km SW of Asti (76202 inhabitants)
99 Km W of Savona (61345 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 1985-04-18
03:47:56
44.42 7.25 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 4859
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-18 03:47:56 ± 0.183
Latitude 44.42 ± 0.01
Longitude 7.25 ± 0.02
Depth (km) 10 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4859

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) 1893.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01044
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 2
Type of magnitude Md
Reference to an origin 4859
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.LRG.Z. 1985-04-18T03:48:34.20 10.0 undecidable manual SN 213 0.0104 -0.3 0.5
--.CK1.Z. 1985-04-18T03:48:23.00 10.0 undecidable manual SG 90 0.0066 1.01 0.1
--.FIN.Z. 1985-04-18T03:48:21.10 10.0 undecidable manual SG 107 0.0065 -0.39 0.6
--.BN9.Z. 1985-04-18T03:48:21.50 10.0 undecidable manual SG 327 0.0067 -0.88 0.1
--.IMP.Z. 1985-04-18T03:48:19.40 10.0 undecidable manual SG 137 0.0062 -0.99 0.1
--.LRG.Z. 1985-04-18T03:48:18.80 10.0 undecidable manual PN 213 0.0104 0.37 1.1
--.FRF.Z. 1985-04-18T03:48:15.70 10.0 undecidable manual PG 206 0.0087 0.22 1.6
--.ROB.Z. 1985-04-18T03:48:13.50 10.0 undecidable manual SG 105 0.0041 0.26 0.7
--.BN9.Z. 1985-04-18T03:48:11.50 10.0 undecidable manual PG 327 0.0067 0.07 2
--.FIN.Z. 1985-04-18T03:48:11.00 10.0 undecidable manual PG 107 0.0065 0.08 2
--.IMP.Z. 1985-04-18T03:48:10.00 10.0 undecidable manual PG 137 0.0062 -0.28 1.8
--.CK1.Z. 1985-04-18T03:48:10.50 10.0 undecidable manual PG 90 0.0066 -0.71 0.6
--.ROB.Z. 1985-04-18T03:48:06.60 10.0 undecidable manual PG 105 0.0041 0.44 1.3
--.STV.Z. 1985-04-18T03:48:03.80 10.0 undecidable manual SG 161 0.0016 -0.45 0.5
--.STV.Z. 1985-04-18T03:48:01.20 10.0 undecidable manual PG 161 0.0016 0.24 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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