Earthquake with magnitude of Md 1.9 on date 17-04-1987 and time 13:28:10 (Italy) in region 2 km E Moiola (CN)

A magnitude Md 1.9 earthquake occured in region: 2 km E Moiola (CN), on

  • 17-04-1987 11:28:10 (UTC)
  • 17-04-1987 13:28:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3120, 7.4180 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
Moiola CN 2 234 234
Gaiola CN 3 582 816
Roccasparvera CN 4 741 1557
Valdieri CN 4 935 2492
Valloriate CN 5 109 2601
Rittana CN 5 109 2710
Roccavione CN 5 2761 5471
Roaschia CN 6 107 5578
Borgo San Dalmazzo CN 6 12468 18046
Vignolo CN 7 2600 20646
Robilante CN 8 2306 22952
Entracque CN 8 774 23726
Bernezzo CN 9 4104 27830
Cervasca CN 9 5013 32843
Demonte CN 10 2003 34846
Boves CN 11 9835 44681
Valgrana CN 11 786 45467
Vernante CN 12 1178 46645
Caraglio CN 12 6836 53481
Monterosso Grana CN 13 505 53986
Cuneo CN 14 56081 110067
Montemale di Cuneo CN 15 241 110308
Aisone CN 16 248 110556
Peveragno CN 16 5543 116099
Pradleves CN 16 250 116349
Limone Piemonte CN 18 1485 117834
Dronero CN 18 7035 124869
Beinette CN 19 3423 128292
Villar San Costanzo CN 19 1547 129839
Roccabruna CN 19 1585 131424
Vinadio CN 19 644 132068
Castelmagno CN 20 66 132134

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Cuneo (56081 inhabitants)
62 Km NW of Sanremo (54807 inhabitants)
80 Km S of Moncalieri (57294 inhabitants)
85 Km W of Savona (61345 inhabitants)
87 Km S of Torino (890529 inhabitants)
90 Km SW of Asti (76202 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
Bulletin
Rev1000
Md 1.9
M 2.0
1987-04-17
11:28:10
44.312 7.418 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 45049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-17 11:28:10 ± 0.11
Latitude 44.3120 ± 0.0242
Longitude 7.4180 ± 0.0182
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 45049

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) 3058.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00510
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 45049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:44:25

M:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 45049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:50:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FIN.Z. 1987-04-17T11:28:30.80 10.0 undecidable manual SG 100 0.5661 -0.52 0
--.ROB.Z. 1987-04-17T11:28:23.30 10.0 undecidable manual SG 91 0.3219 0 0.7
--.FIN.Z. 1987-04-17T11:28:22.70 10.0 undecidable manual PG 100 0.5661 -0.01 1.2
--.SOO.Z. 1987-04-17T11:28:22.30 10.0 undecidable manual SG 310 0.2997 -0.11 0.6
--.DA9.Z. 1987-04-17T11:28:20.20 10.0 undecidable manual SG 327 0.222 0.02 1
--.ROB.Z. 1987-04-17T11:28:18.40 10.0 undecidable manual PG 91 0.3219 0.32 0.3
--.SOO.Z. 1987-04-17T11:28:17.70 10.0 undecidable manual PG 310 0.2997 0.14 1.3
--.DA9.Z. 1987-04-17T11:28:16.20 10.0 positive manual PG 327 0.222 -0.07 3.1
--.STV.Z. 1987-04-17T11:28:15.90 10.0 undecidable manual SG 226 0.0777 0.12 0.5
--.STV.Z. 1987-04-17T11:28:13.60 10.0 undecidable manual PG 226 0.0777 -0.13 1.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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