Earthquake with magnitude of Md 2.6 on date 21-01-1985 and time 03:58:00 (Italy) in region 3 km W Zeri (MS)

A magnitude Md 2.6 earthquake occured in region: 3 km W Zeri (MS), on

  • 21-01-1985 02:58:00 (UTC)
  • 21-01-1985 03:58:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.36, 9.73 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Zeri MS 3 1094 1094
Sesta Godano SP 9 1377 2471
Albareto PR 10 2156 4627
Zignago SP 10 532 5159
Varese Ligure SP 11 2059 7218
Pontremoli MS 13 7357 14575
Rocchetta di Vara SP 13 703 15278
Carro SP 14 545 15823
Brugnato SP 14 1270 17093
Borgo Val di Taro PR 14 6999 24092
Carrodano SP 15 503 24595
Mulazzo MS 15 2424 27019
Borghetto di Vara SP 15 938 27957
Maissana SP 16 616 28573
Compiano PR 16 1112 29685
Tornolo PR 16 1010 30695
Calice al Cornoviglio SP 16 1138 31833
Filattiera MS 17 2309 34142
Bedonia PR 18 3482 37624
Beverino SP 19 2429 40053
Villafranca in Lunigiana MS 19 4770 44823
Castiglione Chiavarese GE 20 1616 46439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of La Spezia (93959 inhabitants)
43 Km NW of Carrara (63133 inhabitants)
49 Km NW of Massa (69479 inhabitants)
63 Km E of Genova (586655 inhabitants)
68 Km SW of Parma (192836 inhabitants)
69 Km NW of Viareggio (62467 inhabitants)
77 Km S of Piacenza (102191 inhabitants)
81 Km W of Reggio nell'Emilia (171345 inhabitants)
85 Km NW of Lucca (89046 inhabitants)
89 Km S of Cremona (71901 inhabitants)
90 Km NW of Pisa (89158 inhabitants)
99 Km E of Savona (61345 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 2.6 1985-01-21
02:58:00
44.36 9.73 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 679
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-21 02:58:00 ± 0.444
Latitude 44.36 ± 0.04
Longitude 9.73 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 679

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) 5554.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00615
Epicentral distance of station farthest from the epicenter (degree) 0.01271
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 679
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BG1.Z. 1985-01-21T02:58:46.00 10.0 undecidable manual SN 0 0.0127 1.67 0.2
--.SAL.Z. 1985-01-21T02:58:43.00 10.0 undecidable manual SN 24 0.0122 -0.2 0.7
--.CK1.Z. 1985-01-21T02:58:34.50 10.0 undecidable manual SN 274 0.0093 -0.88 0.5
--.BG1.Z. 1985-01-21T02:58:26.00 10.0 undecidable manual PN 0 0.0127 0.3 1.6
--.SAL.Z. 1985-01-21T02:58:23.00 10.0 undecidable manual PN 24 0.0122 -2.04 0.3
--.CK1.Z. 1985-01-21T02:58:20.80 10.0 undecidable manual PN 274 0.0093 0.27 1.8
--.BD1.Z. 1985-01-21T02:58:14.20 10.0 undecidable manual PG 116 0.0062 0.04 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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