ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.7 on date 06-02-1985 and time 22:26:22 (Italy) in region 4 km NE Acquafondata (FR)

A magnitude Md 2.7 earthquake occured in region: 4 km NE Acquafondata (FR), on

  • 06-02-1985 21:26:22 (UTC)
  • 06-02-1985 22:26:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.58, 13.98 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
Acquafondata FR 4 263 263
Viticuso FR 6 353 616
San Biagio Saracinisco FR 6 349 965
Vallerotonda FR 6 1581 2546
Filignano IS 8 648 3194
Scapoli IS 8 680 3874
Conca Casale IS 9 200 4074
Sant'Elia Fiumerapido FR 10 6166 10240
Pozzilli IS 10 2380 12620
Rocchetta a Volturno IS 11 1113 13733
Colli a Volturno IS 11 1349 15082
Pizzone IS 11 329 15411
Castel San Vincenzo IS 11 516 15927
Venafro IS 11 11280 27207
Montaquila IS 12 2456 29663
Cervaro FR 12 8109 37772
Picinisco FR 12 1218 38990
Villa Latina FR 12 1241 40231
San Vittore del Lazio FR 13 2636 42867
Cerro al Volturno IS 14 1281 44148
Belmonte Castello FR 14 739 44887
Fornelli IS 14 1909 46796
San Pietro Infine CE 14 944 47740
Settefrati FR 15 728 48468
Cassino FR 15 36142 84610
Atina FR 15 4316 88926
Macchia d'Isernia IS 16 1035 89961
Terelle FR 17 422 90383
Montenero Val Cocchiara IS 17 538 90921
Gallinaro FR 17 1269 92190
Monteroduni IS 18 2264 94454
Acquaviva d'Isernia IS 18 425 94879
Alfedena AQ 18 864 95743
Capriati a Volturno CE 18 1541 97284
Villa Santa Lucia FR 19 2632 99916
Mignano Monte Lungo CE 19 3250 103166
Sesto Campano IS 19 2388 105554
Scontrone AQ 20 574 106128

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km NW of Caserta (76326 inhabitants)
70 Km N of Aversa (53047 inhabitants)
74 Km N of Giugliano in Campania (122974 inhabitants)
77 Km N of Marano di Napoli (59874 inhabitants)
77 Km NW of Acerra (59573 inhabitants)
78 Km NW of Afragola (65057 inhabitants)
79 Km NW of Casoria (77642 inhabitants)
82 Km N of Pozzuoli (81661 inhabitants)
84 Km NW of Benevento (60091 inhabitants)
85 Km N of Napoli (974074 inhabitants)
88 Km S of Chieti (51815 inhabitants)
89 Km NW of Portici (55274 inhabitants)
90 Km E of Latina (125985 inhabitants)
91 Km NW of Ercolano (53709 inhabitants)
94 Km NW of Torre del Greco (86275 inhabitants)
99 Km SE of L'Aquila (69753 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 2.7 1985-02-06
21:26:22
41.58 13.98 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 1229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-06 21:26:22 ± 1.041
Latitude 41.58 ± 0.09
Longitude 13.98 ± 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 1229

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) 10691.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 233
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01133
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 1229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AQU.Z. 1985-02-06T21:26:53.50 10.0 undecidable manual SG 331 0.0079 1.05 0.3
--.PO9.Z. 1985-02-06T21:26:46.50 10.0 undecidable manual PN 322 0.0113 1.1 0.7
--.MNS.Z. 1985-02-06T21:26:45.50 10.0 undecidable manual PN 310 0.0113 0.13 1.3
--.AQU.Z. 1985-02-06T21:26:41.00 10.0 undecidable manual PG 331 0.0079 1.39 0.6
--.DUI.Z. 1985-02-06T21:26:35.70 10.0 undecidable manual SG 76 0.0032 -0.1 0.7
--.DUI.Z. 1985-02-06T21:26:29.50 10.0 undecidable manual PG 76 0.0032 -0.49 1.6
--.SD1.Z. 1985-02-06T21:26:28.00 10.0 undecidable manual SG 316 0.0016 -1.83 0.2
--.SD1.Z. 1985-02-06T21:26:25.80 10.0 positive manual PG 316 0.0016 -0.75 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download