ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.0 on date 20-06-1986 and time 17:54:22 (Italy) in region 4 km SW Bardi (PR)

A magnitude Md 2.0 earthquake occured in region: 4 km SW Bardi (PR), on

  • 20-06-1986 15:54:22 (UTC)
  • 20-06-1986 17:54:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.61, 9.69 at 18 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
Bardi PR 4 2227 2227
Morfasso PC 13 1024 3251
Bedonia PR 13 3482 6733
Compiano PR 13 1112 7845
Varsi PR 14 1230 9075
Bore PR 15 749 9824
Tornolo PR 15 1010 10834
Borgo Val di Taro PR 15 6999 17833
Farini PC 15 1290 19123
Ferriere PC 16 1294 20417
Valmozzola PR 16 539 20956
Albareto PR 18 2156 23112
Bettola PC 20 2828 25940

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km S of Piacenza (102191 inhabitants)
55 Km W of Parma (192836 inhabitants)
57 Km N of La Spezia (93959 inhabitants)
64 Km SW of Cremona (71901 inhabitants)
64 Km E of Genova (586655 inhabitants)
67 Km NW of Carrara (63133 inhabitants)
73 Km NW of Massa (69479 inhabitants)
75 Km W of Reggio nell'Emilia (171345 inhabitants)
77 Km SE of Pavia (72576 inhabitants)
91 Km E of Alessandria (93943 inhabitants)
94 Km NW of Viareggio (62467 inhabitants)
96 Km W of Carpi (70699 inhabitants)
98 Km W of Modena (184973 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 1986-06-20
15:54:22
44.61 9.69 18 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 29829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-20 15:54:22 ± 0.556
Latitude 44.61 ± 0.01
Longitude 9.69 ± 0.03
Depth (km) 18 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 29829

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) 3025.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
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) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.00251
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 29829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:31:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.VEA.Z. 1986-06-20T15:54:33.80 10.0 undecidable manual SG 349 0.0025 -0.1 0.8
--.CO9.Z. 1986-06-20T15:54:32.00 10.0 undecidable manual SG 312 0.0021 -0.43 0.4
--.BVT.Z. 1986-06-20T15:54:31.00 10.0 undecidable manual SG 147 0.0014 0.53 0.2
--.VEA.Z. 1986-06-20T15:54:29.10 10.0 undecidable manual PG 349 0.0025 0.06 2
--.CO9.Z. 1986-06-20T15:54:28.50 10.0 undecidable manual PG 312 0.0021 0.3 1.4
--.BVT.Z. 1986-06-20T15:54:26.70 10.0 undecidable manual PG 147 0.0014 -0.36 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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