ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.9 on date 07-08-1985 and time 01:45:35 (Italy) in region 2 km N Terelle (FR)

A magnitude Md 2.9 earthquake occured in region: 2 km N Terelle (FR), on

  • 06-08-1985 23:45:35 (UTC)
  • 07-08-1985 01:45:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.57, 13.77 at 4 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
Terelle FR 2 422 422
Belmonte Castello FR 3 739 1161
Atina FR 6 4316 5477
Villa Santa Lucia FR 7 2632 8109
Colle San Magno FR 7 699 8808
Casalattico FR 7 574 9382
Villa Latina FR 7 1241 10623
Castrocielo FR 8 3965 14588
Piedimonte San Germano FR 8 6535 21123
Sant'Elia Fiumerapido FR 8 6166 27289
Casalvieri FR 9 2698 29987
Roccasecca FR 9 7365 37352
Cassino FR 10 36142 73494
Gallinaro FR 10 1269 74763
Aquino FR 10 5370 80133
Picinisco FR 12 1218 81351
Vallerotonda FR 12 1581 82932
Santopadre FR 12 1357 84289
Settefrati FR 13 728 85017
Vicalvi FR 13 783 85800
Alvito FR 13 2713 88513
Fontechiari FR 14 1303 89816
San Biagio Saracinisco FR 14 349 90165
Colfelice FR 14 1932 92097
Pignataro Interamna FR 15 2595 94692
Cervaro FR 15 8109 102801
Acquafondata FR 15 263 103064
Posta Fibreno FR 15 1139 104203
Pontecorvo FR 15 13242 117445
San Donato Val di Comino FR 16 2107 119552
Rocca d'Arce FR 16 959 120511
Arpino FR 16 7262 127773
Arce FR 17 5756 133529
Viticuso FR 17 353 133882
San Vittore del Lazio FR 18 2636 136518
San Giorgio a Liri FR 18 3164 139682
Broccostella FR 19 2741 142423
Fontana Liri FR 19 2953 145376
Sant'Apollinare FR 19 1919 147295
San Giovanni Incarico FR 19 3336 150631

Municipalities with at least 50000 inhabitants

An earthquake occurred to
72 Km NW of Caserta (76326 inhabitants)
73 Km E of Latina (125985 inhabitants)
76 Km NW of Aversa (53047 inhabitants)
80 Km NW of Giugliano in Campania (122974 inhabitants)
82 Km NW of Marano di Napoli (59874 inhabitants)
84 Km E of Velletri (53303 inhabitants)
85 Km NW of Pozzuoli (81661 inhabitants)
85 Km NW of Afragola (65057 inhabitants)
85 Km NW of Acerra (59573 inhabitants)
86 Km NW of Casoria (77642 inhabitants)
90 Km NW of Napoli (974074 inhabitants)
92 Km E of Tivoli (56533 inhabitants)
92 Km SE of L'Aquila (69753 inhabitants)
93 Km SW of Chieti (51815 inhabitants)
94 Km E of Aprilia (73446 inhabitants)
96 Km NW of Portici (55274 inhabitants)
96 Km E of Anzio (54211 inhabitants)
97 Km NW of Ercolano (53709 inhabitants)
97 Km NW of Benevento (60091 inhabitants)
99 Km E of Guidonia Montecelio (88673 inhabitants)
100 Km NW of Torre del Greco (86275 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 2.9 1985-08-06
23:45:35
41.57 13.77 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 11339
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-06 23:45:35 ± 0.418
Latitude 41.57 ± 0.02
Longitude 13.77 ± 0.04
Depth (km) 4 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 11339

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) 4008.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.01813
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 11339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:14:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AR1.Z. 1985-08-06T23:46:11.00 10.0 undecidable manual PN 342 0.0181 0.98 0.6
--.AQU.Z. 1985-08-06T23:46:06.00 10.0 undecidable manual SG 340 0.0074 1.01 0.4
--.PO9.Z. 1985-08-06T23:45:58.80 10.0 undecidable manual PN? 328 0.0105 0.36 0.6
--.MNS.Z. 1985-08-06T23:45:57.00 10.0 undecidable manual PN? 315 0.0103 -1.05 0.3
--.AQU.Z. 1985-08-06T23:45:52.00 10.0 undecidable manual PG 340 0.0074 -0.41 1.8
--.RDP.Z. 1985-08-06T23:45:51.30 10.0 undecidable manual PG 283 0.0073 -0.77 1.3
--.SGG.Z. 1985-08-06T23:45:46.90 10.0 undecidable manual PG 111 0.0044 0.81 1.3
--.DUI.Z. 1985-08-06T23:45:45.10 10.0 undecidable manual PG 79 0.0046 -1.54 0.4
--.MSC.Z. 1985-08-06T23:45:45.00 10.0 undecidable manual PG 158 0.0036 0.7 1.4
--.SD1.Z. 1985-08-06T23:45:38.70 10.0 undecidable manual PG 11 0.0012 0.23 1.9
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