Earthquake with magnitude of Md 2.3 on date 09-11-1985 and time 13:27:57 (UTC) in region 8 km E Santo Stefano d'Aveto (GE)

A magnitude Md 2.3 earthquake occured in region: 8 km E Santo Stefano d'Aveto (GE), on

  • 09-11-1985 13:27:57 (UTC)
  • 09-11-1985 14:27:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5680, 9.5500 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
Santo Stefano d'Aveto GE 8 1126 1126
Bedonia PR 10 3482 4608
Ferriere PC 10 1294 5902
Tornolo PR 11 1010 6912
Compiano PR 12 1112 8024
Rezzoaglio GE 14 995 9019
Bardi PR 16 2227 11246
Farini PC 16 1290 12536
Albareto PR 18 2156 14692
Ottone PC 18 516 15208
Borgo Val di Taro PR 19 6999 22207
Fontanigorda GE 20 277 22484
Cerignale PC 20 127 22611

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km E of Genova (586655 inhabitants)
55 Km S of Piacenza (102191 inhabitants)
56 Km NW of La Spezia (93959 inhabitants)
67 Km W of Parma (192836 inhabitants)
70 Km NW of Carrara (63133 inhabitants)
73 Km SW of Cremona (71901 inhabitants)
75 Km SE of Pavia (72576 inhabitants)
76 Km NW of Massa (69479 inhabitants)
83 Km E of Alessandria (93943 inhabitants)
87 Km W of Reggio nell'Emilia (171345 inhabitants)
90 Km E of Savona (61345 inhabitants)
96 Km NW of Viareggio (62467 inhabitants)
100 Km SE of Vigevano (63310 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 2.3 1985-11-09
13:27:57
44.568 9.55 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 15429
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-11-09 13:27:57 ± 0.209
Latitude 44.5680 ± 0.0146
Longitude 9.5500 ± 0.0224
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 15429

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) 2404.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00915
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 15429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:18:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.BD1.Z. 1985-11-09T13:28:30.00 10.0 undecidable manual SG 123 0.8991 0.89 0.1
--.FIN.Z. 1985-11-09T13:28:17.80 10.0 undecidable manual PG 250 1.0101 -0.08 1.2
--.BD1.Z. 1985-11-09T13:28:16.00 10.0 undecidable manual PG 123 0.8991 0.35 1
--.CO9.Z. 1985-11-09T13:28:05.30 10.0 undecidable manual SG 340 0.2109 -0.3 0.6
--.CO9.Z. 1985-11-09T13:28:02.00 10.0 undecidable manual PG 340 0.2109 -0.07 1.7
--.BVT.Z. 1985-11-09T13:28:01.40 10.0 undecidable manual PG 116 0.2109 -0.66 1.4
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