ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 3.5 on date 08-08-1985 and time 21:05:18 (Italy) in region 3 km S Ferriere (PC)

A magnitude Md 3.5 earthquake occured in region: 3 km S Ferriere (PC), on

  • 08-08-1985 19:05:18 (UTC)
  • 08-08-1985 21:05:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.62, 9.5 at 6 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
Ferriere PC 3 1294 1294
Santo Stefano d'Aveto GE 9 1126 2420
Farini PC 11 1290 3710
Cerignale PC 13 127 3837
Ottone PC 13 516 4353
Corte Brugnatella PC 14 586 4939
Rezzoaglio GE 14 995 5934
Coli PC 15 879 6813
Gorreto GE 17 97 6910
Bedonia PR 17 3482 10392
Zerba PC 18 77 10469
Fontanigorda GE 18 277 10746
Bardi PR 18 2227 12973
Tornolo PR 18 1010 13983
Rovegno GE 18 554 14537
Bobbio PC 18 3577 18114
Bettola PC 19 2828 20942
Compiano PR 19 1112 22054
Morfasso PC 19 1024 23078

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SW of Piacenza (102191 inhabitants)
51 Km E of Genova (586655 inhabitants)
63 Km NW of La Spezia (93959 inhabitants)
68 Km SE of Pavia (72576 inhabitants)
68 Km W of Parma (192836 inhabitants)
70 Km SW of Cremona (71901 inhabitants)
77 Km NW of Carrara (63133 inhabitants)
77 Km E of Alessandria (93943 inhabitants)
83 Km NW of Massa (69479 inhabitants)
88 Km E of Savona (61345 inhabitants)
90 Km W of Reggio nell'Emilia (171345 inhabitants)
92 Km SE of Vigevano (63310 inhabitants)
97 Km S of Milano (1345851 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 3.5 1985-08-08
19:05:18
44.62 9.5 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11369
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-08 19:05:18 ± 0.406
Latitude 44.62 ± 0.02
Longitude 9.50 ± 0.02
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11369

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) 2334.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.0408
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 11369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GWF.Z. 1985-08-08T19:07:18.40 10.0 undecidable manual SN 344 0.0408 0.35 0.4
--.GWF.Z. 1985-08-08T19:06:27.60 10.0 undecidable manual PN 344 0.0408 0.05 1.1
--.SD1.Z. 1985-08-08T19:06:26.00 10.0 undecidable manual PN 131 0.0385 1.93 0.1
--.CH1.Z. 1985-08-08T19:06:19.50 10.0 undecidable manual SN 118 0.0181 1.36 0.2
--.ROF.Z. 1985-08-08T19:06:15.60 10.0 undecidable manual PN 330 0.0319 1.65 0.2
--.MNS.Z. 1985-08-08T19:06:10.50 10.0 undecidable manual PN? 133 0.0289 1.13 0.3
--.RBL.Z. 1985-08-08T19:06:10.50 10.0 undecidable manual PN 55 0.0304 -1.1 0.7
--.PO9.Z. 1985-08-08T19:06:08.00 10.0 undecidable manual PN 128 0.029 -1.52 0.3
--.STV.Z. 1985-08-08T19:06:07.50 10.0 undecidable manual SN 257 0.0143 -0.61 0.6
--.FIR.N. 1985-08-08T19:06:05.00 10.0 undecidable manual SN 123 0.0136 -1.23 0.3
--.AS1.Z. 1985-08-08T19:06:04.50 10.0 undecidable manual PN 123 0.0248 1.41 0.5
--.VAI.Z. 1985-08-08T19:06:03.00 10.0 undecidable manual SN 337 0.0121 0.85 0.5
--.SAL.Z. 1985-08-08T19:05:59.00 10.0 undecidable manual SN 35 0.0109 -0.16 0.8
--.ROB.Z. 1985-08-08T19:05:58.50 10.0 undecidable manual SN 255 0.0108 -0.37 1.1
--.BG1.Z. 1985-08-08T19:05:57.00 10.0 undecidable manual SN 7 0.0104 -0.8 0.5
--.CH1.Z. 1985-08-08T19:05:52.50 10.0 undecidable manual PN 118 0.0181 -0.46 1.6
--.CK1.Z. 1985-08-08T19:05:49.50 10.0 undecidable manual SG 257 0.008 -0.55 0.6
--.STV.Z. 1985-08-08T19:05:47.00 10.0 undecidable manual PN 257 0.0143 -0.17 1.9
--.FIR.Z. 1985-08-08T19:05:45.50 10.0 undecidable manual PN 123 0.0136 -0.59 1.5
--.VAI.Z. 1985-08-08T19:05:44.00 10.0 undecidable manual PN 337 0.0121 0.27 1.8
--.SAL.Z. 1985-08-08T19:05:41.00 10.0 undecidable manual PN? 35 0.0109 -1.01 0.4
--.ROB.Z. 1985-08-08T19:05:41.20 10.0 undecidable manual PN 255 0.0108 -0.63 1.5
--.BG1.Z. 1985-08-08T19:05:40.90 10.0 undecidable manual PN 7 0.0104 -0.32 1.8
--.CK1.Z. 1985-08-08T19:05:37.00 10.0 undecidable manual PG 257 0.008 0.26 1.8
--.GEN.Z. 1985-08-08T19:05:36.50 10.0 undecidable manual SG 243 0.004 0.73 0.8
--.GEN.Z. 1985-08-08T19:05:28.20 10.0 undecidable manual PG 243 0.004 -0.3 3.6
--.CO9.Z. 1985-08-08T19:05:22.00 10.0 undecidable manual PG 344 0.0013 -0.05 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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