INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 2.6 on date 15-12-1985 and time 20:05:37 (UTC) in region 2 km E Vernasca (PC)

A magnitude Md 2.6 earthquake occured in region: 2 km E Vernasca (PC), on

  • 15-12-1985 20:05:37 (UTC)
  • 15-12-1985 21:05:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.81, 9.86 at 14 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
Vernasca PC 2 2131 2131
Lugagnano Val d'Arda PC 3 4116 6247
Castell'Arquato PC 5 4713 10960
Salsomaggiore Terme PR 10 19831 30791
Pellegrino Parmense PR 10 1048 31839
Gropparello PC 10 2293 34132
Bore PR 11 749 34881
Alseno PC 13 4714 39595
Carpaneto Piacentino PC 13 7715 47310
Fiorenzuola d'Arda PC 14 15297 62607
Morfasso PC 15 1024 63631
Varsi PR 16 1230 64861
Fidenza PR 18 26770 91631
Cadeo PC 18 6118 97749
Varano de' Melegari PR 18 2676 100425
Ponte dell'Olio PC 18 4794 105219
Vigolzone PC 19 4297 109516
San Giorgio Piacentino PC 19 5792 115308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of Piacenza (102191 inhabitants)
37 Km W of Parma (192836 inhabitants)
39 Km SW of Cremona (71901 inhabitants)
62 Km W of Reggio nell'Emilia (171345 inhabitants)
69 Km SE of Pavia (72576 inhabitants)
78 Km N of La Spezia (93959 inhabitants)
81 Km W of Carpi (70699 inhabitants)
83 Km N of Carrara (63133 inhabitants)
85 Km NE of Genova (586655 inhabitants)
86 Km W of Modena (184973 inhabitants)
87 Km SW of Brescia (196480 inhabitants)
88 Km N of Massa (69479 inhabitants)
90 Km SE of Milano (1345851 inhabitants)
94 Km SE of Sesto San Giovanni (81608 inhabitants)
97 Km SE of Vigevano (63310 inhabitants)
98 Km SE of Cinisello Balsamo (75078 inhabitants)
98 Km SE of Monza (122671 inhabitants)
99 Km E of Alessandria (93943 inhabitants)
100 Km S of Bergamo (119381 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 2.6 1985-12-15
20:05:37
44.81 9.86 14 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 18189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-15 20:05:37 ± 0.217
Latitude 44.81 ± 0.01
Longitude 9.86 ± 0.02
Depth (km) 14 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 18189

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) 1946.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01643
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 18189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.IMP.Z. 1985-12-15T20:06:26.70 10.0 undecidable manual SN 238 0.0149 -0.28 0.6
--.ORO.Z. 1985-12-15T20:06:25.50 10.0 undecidable manual SN 302 0.0139 1.03 0.1
--.ROB.Z. 1985-12-15T20:06:24.30 10.0 undecidable manual SN 250 0.0134 1.14 0.1
--.VAI.Z. 1985-12-15T20:06:18.00 10.0 undecidable manual SN 324 0.0117 -0.55 0.5
--.FIN.Z. 1985-12-15T20:06:17.80 10.0 undecidable manual SN 243 0.0118 -1.03 0.1
--.CKI.Z. 1985-12-15T20:06:15.50 10.0 undecidable manual SN 251 0.0107 -0.23 0.7
--.MDI.Z. 1985-12-15T20:06:11.00 10.0 undecidable manual SN 353 0.0087 0.29 0.7
--.BDI.Z. 1985-12-15T20:06:10.50 10.0 undecidable manual SG 144 0.0082 1.43 0
--.ENR.Z. 1985-12-15T20:06:08.90 10.0 undecidable manual PN 252 0.0164 0.35 1.3
--.ORO.Z. 1985-12-15T20:06:05.50 10.0 undecidable manual PN 302 0.0139 0.73 0.7
--.IMP.Z. 1985-12-15T20:06:05.90 10.0 undecidable manual PN 238 0.0149 -0.31 1.4
--.ROB.Z. 1985-12-15T20:06:03.80 10.0 undecidable manual PN 250 0.0134 -0.21 1.6
--.ORX.Z. 1985-12-15T20:06:03.90 10.0 undecidable manual PN 302 0.014 -0.9 0.5
--.VAI.Z. 1985-12-15T20:06:01.00 10.0 undecidable manual PN 324 0.0117 -0.35 1.5
--.FIN.Z. 1985-12-15T20:06:01.40 10.0 undecidable manual PN 243 0.0118 -0.11 1.8
--.PS9.Z. 1985-12-15T20:06:00.00 10.0 undecidable manual PN 155 0.0106 0.32 1.7
--.CKI.Z. 1985-12-15T20:06:00.50 10.0 undecidable manual PN 251 0.0107 0.78 0.7
--.MDI.Z. 1985-12-15T20:05:56.50 10.0 undecidable manual PN 353 0.0087 -0.32 1.8
--.BDI.Z. 1985-12-15T20:05:55.50 10.0 undecidable manual PG 144 0.0082 -0.38 1.7
--.BVT.Z. 1985-12-15T20:05:50.20 10.0 undecidable manual SG 184 0.003 -0.36 1
--.CO9.Z. 1985-12-15T20:05:49.50 10.0 undecidable manual SG 262 0.0026 0.2 0.8
--.VEA.Z. 1985-12-15T20:05:46.90 10.0 undecidable manual SG 296 0.0016 0.8 0.3
--.CO9.Z. 1985-12-15T20:05:44.00 10.0 undecidable manual PG 262 0.0026 -0.45 1.5
--.BVT.Z. 1985-12-15T20:05:44.90 10.0 undecidable manual PG 184 0.003 -0.29 1.8
--.VEA.Z. 1985-12-15T20:05:42.80 10.0 undecidable manual PG 296 0.0016 0.19 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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