Earthquake with magnitude of Md 2.6 on date 21-03-1985 and time 21:03:55 (Italy) in region 2 km NE Settefrati (FR)

A magnitude Md 2.6 earthquake occured in region: 2 km NE Settefrati (FR), on

  • 21-03-1985 20:03:55 (UTC)
  • 21-03-1985 21:03:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.68, 13.87 at 3 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
Settefrati FR 2 728 728
Picinisco FR 4 1218 1946
San Donato Val di Comino FR 6 2107 4053
Gallinaro FR 7 1269 5322
Villa Latina FR 8 1241 6563
San Biagio Saracinisco FR 9 349 6912
Atina FR 9 4316 11228
Alvito FR 11 2713 13941
Civitella Alfedena AQ 11 296 14237
Opi AQ 12 420 14657
Villetta Barrea AQ 12 653 15310
Belmonte Castello FR 12 739 16049
Barrea AQ 13 726 16775
Vicalvi FR 14 783 17558
Pizzone IS 14 329 17887
Casalattico FR 14 574 18461
Casalvieri FR 14 2698 21159
Posta Fibreno FR 15 1139 22298
Vallerotonda FR 15 1581 23879
Alfedena AQ 15 864 24743
Pescasseroli AQ 16 2203 26946
Sant'Elia Fiumerapido FR 16 6166 33112
Scontrone AQ 16 574 33686
Terelle FR 16 422 34108
Castel San Vincenzo IS 16 516 34624
Fontechiari FR 16 1303 35927
Montenero Val Cocchiara IS 17 538 36465
Acquafondata FR 17 263 36728
Scapoli IS 17 680 37408
Campoli Appennino FR 17 1725 39133
Rocchetta a Volturno IS 19 1113 40246
Viticuso FR 19 353 40599
Pescosolido FR 19 1555 42154
Cerro al Volturno IS 20 1281 43435
Broccostella FR 20 2741 46176

Municipalities with at least 50000 inhabitants

An earthquake occurred to
78 Km NW of Caserta (76326 inhabitants)
78 Km SW of Chieti (51815 inhabitants)
84 Km NW of Aversa (53047 inhabitants)
84 Km E of Latina (125985 inhabitants)
84 Km SE of L'Aquila (69753 inhabitants)
88 Km NW of Giugliano in Campania (122974 inhabitants)
91 Km E of Velletri (53303 inhabitants)
91 Km N of Marano di Napoli (59874 inhabitants)
92 Km SW of Pescara (121014 inhabitants)
92 Km NW of Acerra (59573 inhabitants)
92 Km NW of Afragola (65057 inhabitants)
93 Km NW of Casoria (77642 inhabitants)
94 Km E of Tivoli (56533 inhabitants)
95 Km N of Pozzuoli (81661 inhabitants)
95 Km S of Montesilvano (53738 inhabitants)
98 Km NW of Benevento (60091 inhabitants)
99 Km NW of Napoli (974074 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 1985-03-21
20:03:55
41.68 13.87 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 3479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-21 20:03:55 ± 0.33
Latitude 41.68 ± 0.04
Longitude 13.87 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3479

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) 4462.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.0004
Epicentral distance of station farthest from the epicenter (degree) 0.01012
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 3479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AQU.Z. 1985-03-21T20:04:22.50 10.0 undecidable manual SG 332 0.0068 -0.38 0.5
--.PO9.Z. 1985-03-21T20:04:18.60 10.0 undecidable manual PN 322 0.0101 0.64 0.9
--.MNS.Z. 1985-03-21T20:04:17.00 10.0 undecidable manual PN? 308 0.0101 -0.98 0.2
--.RDP.Z. 1985-03-21T20:04:14.00 10.0 undecidable manual PG 275 0.0078 0.75 0.8
--.DUI.Z. 1985-03-21T20:04:12.50 10.0 undecidable manual SG 92 0.0039 0.2 0.7
--.AQU.Z. 1985-03-21T20:04:10.50 10.0 undecidable manual PG 332 0.0068 -0.75 0.9
--.DUI.Z. 1985-03-21T20:04:06.00 10.0 undecidable manual PG 92 0.0039 0.85 0.7
--.SGG.Z. 1985-03-21T20:04:04.80 10.0 undecidable manual PG 127 0.0043 -1.28 0.6
--.SD1.Z. 1985-03-21T20:03:58.00 10.0 undecidable manual SG 300 0.0004 0.27 1.1
--.SD1.Z. 1985-03-21T20:03:56.60 10.0 negative manual PG 300 0.0004 -0.13 3.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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