Earthquake with magnitude of Md 2.5 on date 17-06-1985 and time 20:58:26 (UTC) in region 1 km W Compiano (PR)

A magnitude Md 2.5 earthquake occured in region: 1 km W Compiano (PR), on

  • 17-06-1985 20:58:26 (UTC)
  • 17-06-1985 22:58:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4950, 9.6520 at 5 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
Compiano PR 1 1112 1112
Bedonia PR 2 3482 4594
Tornolo PR 2 1010 5604
Albareto PR 7 2156 7760
Borgo Val di Taro PR 9 6999 14759
Varese Ligure SP 14 2059 16818
Bardi PR 17 2227 19045
Santo Stefano d'Aveto GE 17 1126 20171
Zeri MS 18 1094 21265
Maissana SP 20 616 21881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of La Spezia (93959 inhabitants)
58 Km E of Genova (586655 inhabitants)
58 Km NW of Carrara (63133 inhabitants)
62 Km S of Piacenza (102191 inhabitants)
64 Km SW of Parma (192836 inhabitants)
64 Km NW of Massa (69479 inhabitants)
77 Km SW of Cremona (71901 inhabitants)
81 Km W of Reggio nell'Emilia (171345 inhabitants)
85 Km NW of Viareggio (62467 inhabitants)
86 Km SE of Pavia (72576 inhabitants)
94 Km E of Alessandria (93943 inhabitants)
95 Km E of Savona (61345 inhabitants)
99 Km NW of Lucca (89046 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 2.5 1985-06-17
20:58:26
44.495 9.652 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 8629
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-17 20:58:26 ± 0.166
Latitude 44.4950 ± 0.0140
Longitude 9.6520 ± 0.0155
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 8629

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) 1982.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00720
Epicentral distance of station farthest from the epicenter (degree) 0.01959
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 8629
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:12:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.STV.Z. 1985-06-17T20:59:19.20 10.0 undecidable manual SN 263 1.6761 0.77 0.4
--.ORO.Z. 1985-06-17T20:59:18.00 10.0 undecidable manual SN 315 1.6317 0.55 0.8
--.IMP.Z. 1985-06-17T20:59:11.60 10.0 undecidable manual SN 246 1.3875 0.08 0.8
--.BG1.Z. 1985-06-17T20:59:09.00 10.0 undecidable manual SN 2 1.2765 -0.08 0.7
--.ROB.Z. 1985-06-17T20:59:09.00 10.0 undecidable manual SN 262 1.2765 -0.12 0.8
--.SAL.Z. 1985-06-17T20:59:08.50 10.0 undecidable manual SN 29 1.2654 -0.33 0.6
--.CTI.Z. 1985-06-17T20:59:04.00 10.0 undecidable manual PN 42 2.0868 1.68 0.1
--.BN9.Z. 1985-06-17T20:59:03.50 10.0 undecidable manual PN 286 2.1756 -0.03 1.5
--.FIN.Z. 1985-06-17T20:59:03.30 10.0 undecidable manual SG 255 1.0656 -0.66 0.5
--.CH1.Z. 1985-06-17T20:58:58.00 10.0 undecidable manual PN 117 1.8648 -1.14 0.5
--.ORO.Z. 1985-06-17T20:58:57.00 10.0 undecidable manual PN 315 1.6317 0.98 0.8
--.STV.Z. 1985-06-17T20:58:57.10 10.0 undecidable manual PN 263 1.6761 0.52 1.3
--.BD1.Z. 1985-06-17T20:58:56.00 10.0 undecidable manual SG 122 0.7992 0.63 0.5
--.VAI.Z. 1985-06-17T20:58:54.00 10.0 undecidable manual PN 336 1.4985 -0.23 1.7
--.IMP.Z. 1985-06-17T20:58:52.60 10.0 undecidable manual PN 246 1.3875 0.01 1.9
--.ROB.Z. 1985-06-17T20:58:51.60 10.0 undecidable manual PN 262 1.2765 0.4 1.6
--.SAL.Z. 1985-06-17T20:58:50.00 10.0 undecidable manual PN 29 1.2654 -1.04 0.6
--.BG1.Z. 1985-06-17T20:58:50.50 10.0 undecidable manual PN 2 1.2765 -0.68 1.1
--.FIN.Z. 1985-06-17T20:58:47.30 10.0 undecidable manual PG 255 1.0656 -0.93 0.9
--.PS9.Z. 1985-06-17T20:58:46.50 10.0 undecidable manual PG 141 0.9879 -0.32 1.8
--.CK1.Z. 1985-06-17T20:58:46.50 10.0 undecidable manual PG 266 0.9768 -0.09 1.9
--.BD1.Z. 1985-06-17T20:58:44.00 10.0 undecidable manual PG 122 0.7992 0.73 1.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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