Earthquake with magnitude of Md 2.6 on date 11-02-1985 and time 06:51:20 (Italy) in region 6 km E Settefrati (FR)

A magnitude Md 2.6 earthquake occured in region: 6 km E Settefrati (FR), on

  • 11-02-1985 05:51:20 (UTC)
  • 11-02-1985 06:51:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7, 13.91 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
Settefrati FR 6 728 728
Picinisco FR 6 1218 1946
San Donato Val di Comino FR 8 2107 4053
Civitella Alfedena AQ 8 296 4349
San Biagio Saracinisco FR 9 349 4698
Villetta Barrea AQ 9 653 5351
Barrea AQ 10 726 6077
Gallinaro FR 10 1269 7346
Villa Latina FR 11 1241 8587
Pizzone IS 11 329 8916
Alfedena AQ 11 864 9780
Opi AQ 12 420 10200
Atina FR 12 4316 14516
Scontrone AQ 12 574 15090
Montenero Val Cocchiara IS 13 538 15628
Castel San Vincenzo IS 14 516 16144
Alvito FR 14 2713 18857
Belmonte Castello FR 15 739 19596
Scapoli IS 15 680 20276
Vallerotonda FR 16 1581 21857
Pescasseroli AQ 16 2203 24060
Rocchetta a Volturno IS 17 1113 25173
Cerro al Volturno IS 17 1281 26454
Vicalvi FR 17 783 27237
Acquafondata FR 17 263 27500
Casalattico FR 17 574 28074
Sant'Elia Fiumerapido FR 18 6166 34240
Posta Fibreno FR 18 1139 35379
Casalvieri FR 18 2698 38077
Terelle FR 19 422 38499
Colli a Volturno IS 19 1349 39848
Rionero Sannitico IS 19 1118 40966
Castel di Sangro AQ 19 6538 47504
Fontechiari FR 20 1303 48807
Viticuso FR 20 353 49160
Campoli Appennino FR 20 1725 50885

Municipalities with at least 50000 inhabitants

An earthquake occurred to
76 Km S of Chieti (51815 inhabitants)
77 Km NW of Caserta (76326 inhabitants)
84 Km N of Aversa (53047 inhabitants)
84 Km SE of L'Aquila (69753 inhabitants)
87 Km E of Latina (125985 inhabitants)
89 Km N of Giugliano in Campania (122974 inhabitants)
89 Km S of Pescara (121014 inhabitants)
92 Km N of Marano di Napoli (59874 inhabitants)
92 Km NW of Acerra (59573 inhabitants)
92 Km NW of Afragola (65057 inhabitants)
93 Km NW of Casoria (77642 inhabitants)
93 Km S of Montesilvano (53738 inhabitants)
94 Km E of Velletri (53303 inhabitants)
95 Km N of Pozzuoli (81661 inhabitants)
96 Km NW of Benevento (60091 inhabitants)
97 Km E of Tivoli (56533 inhabitants)
99 Km N 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 1985-02-11
05:51:20
41.7 13.91 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-11 05:51:20 ± 0.468
Latitude 41.70 ± 0.03
Longitude 13.91 ± 0.05
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1489

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) 5696.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 310
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
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) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.01028
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 3
Type of magnitude Md
Reference to an origin 1489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PO9.Z. 1985-02-11T05:51:42.50 10.0 undecidable manual PN 321 0.0102 0.38 0.2
--.MNS.Z. 1985-02-11T05:51:42.00 10.0 undecidable manual PN 307 0.0103 -0.24 0.5
--.AQU.Z. 1985-02-11T05:51:35.50 10.0 undecidable manual PG 330 0.0068 -0.13 1
--.SD1.Z. 1985-02-11T05:51:24.90 10.0 undecidable manual SG 280 0.0006 0.1 0.7
--.SD1.Z. 1985-02-11T05:51:22.90 10.0 positive manual PG 280 0.0006 -0.05 2.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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