Earthquake with magnitude of Md 3.0 on date 27-08-1985 and time 23:30:35 (Italy) in region 4 km S Civitella Alfedena (AQ)

A magnitude Md 3.0 earthquake occured in region: 4 km S Civitella Alfedena (AQ), on

  • 27-08-1985 21:30:35 (UTC)
  • 27-08-1985 23:30:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.73, 13.96 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
Civitella Alfedena AQ 4 296 296
Barrea AQ 4 726 1022
Villetta Barrea AQ 5 653 1675
Alfedena AQ 7 864 2539
Scontrone AQ 7 574 3113
Montenero Val Cocchiara IS 10 538 3651
Pizzone IS 10 329 3980
Settefrati FR 11 728 4708
Opi AQ 12 420 5128
Picinisco FR 12 1218 6346
San Donato Val di Comino FR 12 2107 8453
Castel San Vincenzo IS 12 516 8969
San Biagio Saracinisco FR 13 349 9318
Castel di Sangro AQ 14 6538 15856
Cerro al Volturno IS 15 1281 17137
Gallinaro FR 15 1269 18406
Scapoli IS 16 680 19086
Rionero Sannitico IS 16 1118 20204
Pescasseroli AQ 16 2203 22407
Rocchetta a Volturno IS 16 1113 23520
Villa Latina FR 16 1241 24761
Roccaraso AQ 16 1627 26388
Acquaviva d'Isernia IS 18 425 26813
Atina FR 18 4316 31129
Rivisondoli AQ 18 700 31829
Alvito FR 18 2713 34542
Colli a Volturno IS 19 1349 35891
Forlì del Sannio IS 19 675 36566
Scanno AQ 20 1847 38413
Pescocostanzo AQ 20 1128 39541

Municipalities with at least 50000 inhabitants

An earthquake occurred to
71 Km S of Chieti (51815 inhabitants)
80 Km NW of Caserta (76326 inhabitants)
83 Km SE of L'Aquila (69753 inhabitants)
84 Km S of Pescara (121014 inhabitants)
87 Km N of Aversa (53047 inhabitants)
88 Km S of Montesilvano (53738 inhabitants)
92 Km N of Giugliano in Campania (122974 inhabitants)
92 Km E of Latina (125985 inhabitants)
94 Km NW of Acerra (59573 inhabitants)
95 Km N of Marano di Napoli (59874 inhabitants)
95 Km NW of Afragola (65057 inhabitants)
96 Km NW of Benevento (60091 inhabitants)
96 Km N of Casoria (77642 inhabitants)
98 Km E of Velletri (53303 inhabitants)
99 Km E of Tivoli (56533 inhabitants)
99 Km N of Pozzuoli (81661 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 3.0 1985-08-27
21:30:35
41.73 13.96 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12389
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-27 21:30:35 ± 0.301
Latitude 41.73 ± 0.03
Longitude 13.96 ± 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 12389

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) 4302.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.0034
Epicentral distance of station farthest from the epicenter (degree) 0.01716
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 12389
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-08-27T21:31:09.00 10.0 undecidable manual PN 337 0.0172 0.74 0.7
--.AM1.Z. 1985-08-27T21:31:07.90 10.0 undecidable manual PN 352 0.0165 0.74 0.7
--.AS1.Z. 1985-08-27T21:31:06.00 10.0 undecidable manual PN 324 0.0147 1.52 0.3
--.CM2.Z. 1985-08-27T21:31:02.50 10.0 negative manual PN 338 0.0142 -1.12 1.1
--.SOR.Z. 1985-08-27T21:30:59.20 10.0 undecidable manual PN 166 0.0106 0.96 0.8
--.TR9.Z. 1985-08-27T21:30:59.10 10.0 negative manual PN 125 0.0105 0.98 1.5
--.OVO.Z. 1985-08-27T21:30:54.80 10.0 undecidable manual PG 159 0.0087 -0.1 1.4
--.AQU.Z. 1985-08-27T21:30:50.00 10.0 undecidable manual PG 327 0.0066 -0.8 0.9
--.DUI.Z. 1985-08-27T21:30:50.00 10.0 undecidable manual SG 101 0.0034 -0.13 0.6
--.SGG.Z. 1985-08-27T21:30:45.50 10.0 undecidable manual PG 137 0.0042 -0.22 1.4
--.MSC.Z. 1985-08-27T21:30:45.80 10.0 undecidable manual PG 178 0.0049 -1.25 0.5
--.DUI.Z. 1985-08-27T21:30:43.50 10.0 negative manual PG 101 0.0034 -0.62 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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