ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.8 on date 11-08-1985 and time 08:01:06 (Italy) in region 4 km S Cassino (FR)

A magnitude Md 2.8 earthquake occured in region: 4 km S Cassino (FR), on

  • 11-08-1985 06:01:06 (UTC)
  • 11-08-1985 08:01:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.46, 13.83 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
Cassino FR 4 36142 36142
Pignataro Interamna FR 4 2595 38737
Sant'Apollinare FR 7 1919 40656
Cervaro FR 7 8109 48765
Villa Santa Lucia FR 7 2632 51397
Piedimonte San Germano FR 8 6535 57932
San Giorgio a Liri FR 8 3164 61096
Sant'Ambrogio sul Garigliano FR 9 966 62062
San Vittore del Lazio FR 9 2636 64698
Rocca d'Evandro CE 9 3283 67981
Sant'Elia Fiumerapido FR 9 6166 74147
Sant'Andrea del Garigliano FR 11 1505 75652
Vallemaio FR 11 937 76589
Aquino FR 11 5370 81959
Castelnuovo Parano FR 11 883 82842
San Pietro Infine CE 11 944 83786
Terelle FR 11 422 84208
Vallerotonda FR 13 1581 85789
Belmonte Castello FR 13 739 86528
Coreno Ausonio FR 13 1644 88172
Ausonia FR 13 2619 90791
Pontecorvo FR 14 13242 104033
Castrocielo FR 14 3965 107998
Viticuso FR 14 353 108351
Acquafondata FR 14 263 108614
Esperia FR 15 3828 112442
Mignano Monte Lungo CE 15 3250 115692
Colle San Magno FR 15 699 116391
Conca Casale IS 15 200 116591
Roccasecca FR 17 7365 123956
Galluccio CE 17 2154 126110
Villa Latina FR 17 1241 127351
Castelforte LT 18 4386 131737
Santi Cosma e Damiano LT 18 6897 138634
Atina FR 18 4316 142950
Venafro IS 18 11280 154230
Spigno Saturnia LT 19 2961 157191
San Biagio Saracinisco FR 19 349 157540
Conca della Campania CE 20 1239 158779
Casalattico FR 20 574 159353

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km NW of Caserta (76326 inhabitants)
63 Km NW of Aversa (53047 inhabitants)
67 Km NW of Giugliano in Campania (122974 inhabitants)
69 Km NW of Marano di Napoli (59874 inhabitants)
72 Km NW of Pozzuoli (81661 inhabitants)
72 Km NW of Afragola (65057 inhabitants)
73 Km NW of Casoria (77642 inhabitants)
73 Km NW of Acerra (59573 inhabitants)
77 Km E of Latina (125985 inhabitants)
78 Km NW of Napoli (974074 inhabitants)
83 Km NW of Portici (55274 inhabitants)
84 Km NW of Ercolano (53709 inhabitants)
87 Km NW of Torre del Greco (86275 inhabitants)
88 Km W of Benevento (60091 inhabitants)
91 Km E of Velletri (53303 inhabitants)
99 Km NW of Scafati (50787 inhabitants)
99 Km E of Aprilia (73446 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 2.8 1985-08-11
06:01:06
41.46 13.83 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 11509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-11 06:01:06 ± 0.515
Latitude 41.46 ± 0.02
Longitude 13.83 ± 0.05
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11509

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) 5009.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 211
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) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.01012
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:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 11509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BS1.Z. 1985-08-11T06:01:27.50 10.0 undecidable manual PG 132 0.0091 0.83 0.7
--.TR9.Z. 1985-08-11T06:01:27.30 10.0 undecidable manual PN 110 0.0101 -1.01 0.5
--.DUI.Z. 1985-08-11T06:01:25.50 10.0 undecidable manual SG 66 0.0045 0.46 0.6
--.OVO.Z. 1985-08-11T06:01:22.50 10.0 undecidable manual PG 145 0.0069 0.49 1.3
--.SD1.Z. 1985-08-11T06:01:18.00 10.0 undecidable manual SG 356 0.0022 1.38 0.1
--.DUI.Z. 1985-08-11T06:01:16.50 10.0 undecidable manual PG 66 0.0045 -0.8 1
--.SD1.Z. 1985-08-11T06:01:12.00 10.0 positive manual PG 356 0.0022 -0.44 2.9
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