Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 17-06-1985 and time 22:16:15 (UTC) in region 7 km E Ferriere (PC)

A magnitude Md 2.5 earthquake occured in region: 7 km E Ferriere (PC), on

  • 17-06-1985 22:16:15 (UTC)
  • 18-06-1985 00:16:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6330, 9.5880 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ferriere PC 7 1294 1294
Farini PC 9 1290 2584
Bardi PR 12 2227 4811
Morfasso PC 14 1024 5835
Santo Stefano d'Aveto GE 14 1126 6961
Bedonia PR 15 3482 10443
Bettola PC 16 2828 13271
Compiano PR 16 1112 14383
Tornolo PR 17 1010 15393
Coli PC 19 879 16272
Corte Brugnatella PC 19 586 16858
Bore PR 19 749 17607
Cerignale PC 19 127 17734
Rezzoaglio GE 20 995 18729

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km S of Piacenza (102191 inhabitants)
57 Km E of Genova (586655 inhabitants)
61 Km NW of La Spezia (93959 inhabitants)
62 Km W of Parma (192836 inhabitants)
66 Km SW of Cremona (71901 inhabitants)
70 Km SE of Pavia (72576 inhabitants)
74 Km NW of Carrara (63133 inhabitants)
80 Km NW of Massa (69479 inhabitants)
83 Km W of Reggio nell'Emilia (171345 inhabitants)
83 Km E of Alessandria (93943 inhabitants)
95 Km E of Savona (61345 inhabitants)
95 Km SE of Vigevano (63310 inhabitants)
98 Km SE of Milano (1345851 inhabitants)
100 Km NW of Viareggio (62467 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
22:16:15		 44.633 9.588 10 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 8639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-06-17 22:16:15 ± 0.305
Latitude 44.6330 ± 0.0228
Longitude 9.5880 ± 0.0373
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 8639

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) 3889.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01489
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 8639
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
--.IMP.Z. 1985-06-17T22:17:00.20 10.0 undecidable manual SN 240 1.3986 0.34 0.6
--.ROB.Z. 1985-06-17T22:16:57.50 10.0 undecidable manual SN 255 1.2543 0.98 0.3
--.BG1.Z. 1985-06-17T22:16:55.50 10.0 undecidable manual SN 4 1.1433 1.84 0.1
--.SAL.Z. 1985-06-17T22:16:55.50 10.0 undecidable manual SN 33 1.1655 1.11 0.3
--.FIN.Z. 1985-06-17T22:16:51.50 10.0 undecidable manual SN 247 1.0656 -0.38 0.7
--.BD1.Z. 1985-06-17T22:16:45.50 10.0 undecidable manual SG 127 0.9213 -1.82 0.1
--.STV.Z. 1985-06-17T22:16:45.00 10.0 undecidable manual PN 257 1.6539 0.31 1.4
--.IMP.Z. 1985-06-17T22:16:40.90 10.0 undecidable manual PN 240 1.3986 -0.39 1.5
--.ROB.Z. 1985-06-17T22:16:39.60 10.0 undecidable manual PN 255 1.2543 0.25 1.6
--.SAL.Z. 1985-06-17T22:16:38.50 10.0 undecidable manual PN 33 1.1655 0.38 1.6
--.BG1.Z. 1985-06-17T22:16:38.50 10.0 undecidable manual PN 4 1.1433 0.8 1.1
--.BD1.Z. 1985-06-17T22:16:35.00 10.0 undecidable manual PG 127 0.9213 0.95 1
--.FIN.Z. 1985-06-17T22:16:35.90 10.0 undecidable manual PN 247 1.0656 -0.78 1.2
--.VEA.Z. 1985-06-17T22:16:25.40 10.0 undecidable manual SG 4 0.2553 -0.69 0.5
--.PCN.Z. 1985-06-17T22:16:24.50 10.0 undecidable manual PG 7 0.4107 -0.31 3.6
--.VEA.Z. 1985-06-17T22:16:20.30 10.0 undecidable manual PG 4 0.2553 -1.48 0.4
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download