Earthquake with magnitude of Md 2.4 on date 12-08-1985 and time 04:25:18 (Italy) in region 4 km SW Ferriere (PC)

A magnitude Md 2.4 earthquake occured in region: 4 km SW Ferriere (PC), on

  • 12-08-1985 02:25:18 (UTC)
  • 12-08-1985 04:25:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6120, 9.4810 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 4 1294 1294
Santo Stefano d'Aveto GE 7 1126 2420
Ottone PC 12 516 2936
Rezzoaglio GE 12 995 3931
Cerignale PC 13 127 4058
Farini PC 13 1290 5348
Corte Brugnatella PC 14 586 5934
Gorreto GE 15 97 6031
Coli PC 16 879 6910
Fontanigorda GE 16 277 7187
Rovegno GE 16 554 7741
Zerba PC 16 77 7818
Bedonia PR 17 3482 11300
Tornolo PR 18 1010 12310
Bobbio PC 19 3577 15887
Compiano PR 19 1112 16999

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km E of Genova (586655 inhabitants)
52 Km SW of Piacenza (102191 inhabitants)
63 Km NW of La Spezia (93959 inhabitants)
69 Km SE of Pavia (72576 inhabitants)
70 Km W of Parma (192836 inhabitants)
72 Km SW of Cremona (71901 inhabitants)
76 Km E of Alessandria (93943 inhabitants)
77 Km NW of Carrara (63133 inhabitants)
83 Km NW of Massa (69479 inhabitants)
86 Km E of Savona (61345 inhabitants)
92 Km W of Reggio nell'Emilia (171345 inhabitants)
93 Km SE of Vigevano (63310 inhabitants)
98 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
Bulletin
Rev1000
Md 2.4 1985-08-12
02:25:18
44.612 9.481 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11579
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-12 02:25:18 ± 0.21
Latitude 44.6120 ± 0.0106
Longitude 9.4810 ± 0.0183
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 11579

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) 1869.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00138
Epicentral distance of station farthest from the epicenter (degree) 0.01044
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 11579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PS9.Z. 1985-08-12T02:25:57.00 10.0 undecidable manual SN 139 1.1544 -1.13 0
--.PS9.Z. 1985-08-12T02:25:42.00 10.0 undecidable manual PN 139 1.1544 0.49 0.3
--.GEN.Z. 1985-08-12T02:25:35.20 10.0 undecidable manual SG 243 0.4218 -0.22 0.4
--.PCN.Z. 1985-08-12T02:25:29.00 10.0 undecidable manual PG 16 0.444 0.12 2.4
--.BVT.Z. 1985-08-12T02:25:29.60 10.0 undecidable manual SG 119 0.2664 0 0.8
--.GEN.Z. 1985-08-12T02:25:28.50 10.0 undecidable manual PG 243 0.4218 0.1 1.2
--.BVT.Z. 1985-08-12T02:25:25.00 10.0 positive manual PG 119 0.2664 -0.04 2.6
--.CO9.Z. 1985-08-12T02:25:24.50 10.0 undecidable manual SG 351 0.1554 -0.66 0.1
--.CO9.Z. 1985-08-12T02:25:22.50 10.0 undecidable manual PG 351 0.1554 0.02 1.3
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