Earthquake with magnitude of Md 2.3 on date 02-09-1986 and time 19:55:46 (UTC) in region 5 km E Mezzanego (GE)

A magnitude Md 2.3 earthquake occured in region: 5 km E Mezzanego (GE), on

  • 02-09-1986 19:55:46 (UTC)
  • 02-09-1986 21:55:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3950, 9.4390 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
Mezzanego GE 5 1537 1537
Borzonasca GE 5 2049 3586
Ne GE 6 2259 5845
Carasco GE 9 3733 9578
Cogorno GE 10 5676 15254
Maissana SP 10 616 15870
San Colombano Certenoli GE 10 2683 18553
Leivi GE 11 2442 20995
Lavagna GE 12 12791 33786
Chiavari GE 13 27398 61184
Varese Ligure SP 13 2059 63243
Orero GE 13 565 63808
Casarza Ligure GE 13 6826 70634
Coreglia Ligure GE 14 285 70919
Lorsica GE 14 468 71387
Sestri Levante GE 14 18578 89965
Castiglione Chiavarese GE 15 1616 91581
Zoagli GE 15 2472 94053
Rezzoaglio GE 15 995 95048
Favale di Malvaro GE 16 466 95514
Cicagna GE 16 2502 98016
Santo Stefano d'Aveto GE 17 1126 99142
Rapallo GE 17 29796 128938
Moneglia GE 18 2809 131747
Tornolo PR 18 1010 132757
Moconesi GE 18 2614 135371
Carro SP 19 545 135916
Santa Margherita Ligure GE 19 9338 145254
Tribogna GE 19 614 145868
Bedonia PR 20 3482 149350
Fontanigorda GE 20 277 149627

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Genova (586655 inhabitants)
45 Km NW of La Spezia (93959 inhabitants)
63 Km NW of Carrara (63133 inhabitants)
69 Km NW of Massa (69479 inhabitants)
76 Km S of Piacenza (102191 inhabitants)
77 Km E of Savona (61345 inhabitants)
84 Km SW of Parma (192836 inhabitants)
87 Km SE of Alessandria (93943 inhabitants)
87 Km NW of Viareggio (62467 inhabitants)
91 Km S of Pavia (72576 inhabitants)
94 Km SW of Cremona (71901 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 1986-09-02
19:55:46
44.395 9.439 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 33489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-09-02 19:55:46 ± 0.241
Latitude 44.3950 ± 0.0077
Longitude 9.4390 ± 0.0156
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 33489

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) 1500.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 230
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.00923
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 33489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:34:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PS9.Z. 1986-09-02T19:56:22.50 10.0 undecidable manual SG 130 1.0212 -0.04 0.6
--.PS9.Z. 1986-09-02T19:56:07.50 10.0 undecidable manual PG 130 1.0212 0.14 1.5
--.CO9.Z. 1986-09-02T19:56:01.50 10.0 undecidable manual SG 1 0.3663 0.47 0.4
--.BVT.Z. 1986-09-02T19:55:57.60 10.0 undecidable manual SG 73 0.2775 0.05 0.9
--.CO9.Z. 1986-09-02T19:55:54.50 10.0 undecidable manual PG 1 0.3663 -0.44 0.8
--.BVT.Z. 1986-09-02T19:55:52.70 10.0 undecidable manual PG 73 0.2775 -0.22 1.8
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