Earthquake with magnitude of Md 3.1 on date 23-03-1985 and time 23:48:43 (UTC) in region 3 km W Belmonte Castello (FR)

A magnitude Md 3.1 earthquake occured in region: 3 km W Belmonte Castello (FR), on

  • 23-03-1985 23:48:43 (UTC)
  • 24-03-1985 00:48:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.59, 13.78 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
Belmonte Castello FR 3 739 739
Atina FR 4 4316 5055
Terelle FR 4 422 5477
Villa Latina FR 5 1241 6718
Casalattico FR 6 574 7292
Casalvieri FR 7 2698 9990
Gallinaro FR 8 1269 11259
Colle San Magno FR 9 699 11958
Sant'Elia Fiumerapido FR 9 6166 18124
Villa Santa Lucia FR 9 2632 20756
Picinisco FR 9 1218 21974
Castrocielo FR 10 3965 25939
Roccasecca FR 10 7365 33304
Settefrati FR 11 728 34032
Piedimonte San Germano FR 11 6535 40567
Alvito FR 11 2713 43280
Cassino FR 12 36142 79422
Vicalvi FR 12 783 80205
Vallerotonda FR 12 1581 81786
San Biagio Saracinisco FR 12 349 82135
Santopadre FR 12 1357 83492
Fontechiari FR 13 1303 84795
Aquino FR 13 5370 90165
San Donato Val di Comino FR 13 2107 92272
Posta Fibreno FR 14 1139 93411
Acquafondata FR 15 263 93674
Colfelice FR 15 1932 95606
Arpino FR 16 7262 102868
Cervaro FR 16 8109 110977
Rocca d'Arce FR 17 959 111936
Pignataro Interamna FR 17 2595 114531
Viticuso FR 17 353 114884
Arce FR 17 5756 120640
Broccostella FR 18 2741 123381
Pontecorvo FR 18 13242 136623
Campoli Appennino FR 19 1725 138348
San Vittore del Lazio FR 19 2636 140984
Fontana Liri FR 20 2953 143937
Isola del Liri FR 20 11715 155652

Municipalities with at least 50000 inhabitants

An earthquake occurred to
73 Km NW of Caserta (76326 inhabitants)
75 Km E of Latina (125985 inhabitants)
77 Km NW of Aversa (53047 inhabitants)
81 Km NW of Giugliano in Campania (122974 inhabitants)
84 Km NW of Marano di Napoli (59874 inhabitants)
84 Km E of Velletri (53303 inhabitants)
86 Km NW of Afragola (65057 inhabitants)
87 Km N of Pozzuoli (81661 inhabitants)
87 Km NW of Acerra (59573 inhabitants)
87 Km NW of Casoria (77642 inhabitants)
90 Km SW of Chieti (51815 inhabitants)
90 Km SE of L'Aquila (69753 inhabitants)
92 Km E of Tivoli (56533 inhabitants)
92 Km NW of Napoli (974074 inhabitants)
94 Km E of Aprilia (73446 inhabitants)
97 Km E of Anzio (54211 inhabitants)
98 Km NW of Portici (55274 inhabitants)
98 Km NW of Benevento (60091 inhabitants)
99 Km E of Guidonia Montecelio (88673 inhabitants)
99 Km NW of Ercolano (53709 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 3.1
ML-VAX 2.4
1985-03-23
23:48:43
41.59 13.78 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 3559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-03-23 23:48:43 ± 0.287
Latitude 41.59 ± 0.02
Longitude 13.78 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 3559

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) 3703.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.9
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.04752
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 3559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:19

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 3559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.OHR.Z. 1985-03-23T23:50:04.10 10.0 undecidable manual PN 92 0.0475 1.88 0.2
--.VOY.Z. 1985-03-23T23:49:49.70 10.0 undecidable manual PN 0 0.0399 -0.93 0.6
--.PE1.Z. 1985-03-23T23:49:29.00 10.0 undecidable manual PN 104 0.0256 0.22 1.1
--.BRT.Z. 1985-03-23T23:49:28.00 10.0 undecidable manual PN 104 0.0236 2.22 0.2
--.CH1.Z. 1985-03-23T23:49:24.90 10.0 undecidable manual PN 327 0.0219 1.67 0.5
--.AR1.Z. 1985-03-23T23:49:18.70 10.0 undecidable manual PN 342 0.018 1.48 0.6
--.AS1.Z. 1985-03-23T23:49:13.80 10.0 undecidable manual PN 330 0.0152 0.88 1.1
--.RMP.N. 1985-03-23T23:49:13.00 10.0 undecidable manual SG 285 0.0075 0.59 0.6
--.RDP.Z. 1985-03-23T23:49:11.80 10.0 undecidable manual SG 282 0.0073 0.11 0.6
--.SGO.Z. 1985-03-23T23:49:11.60 10.0 undecidable manual PN 131 0.0138 0.71 1.3
--.BS1.Z. 1985-03-23T23:49:06.60 10.0 undecidable manual PN 135 0.0101 1.38 0.8
--.PO9.Z. 1985-03-23T23:49:05.50 10.0 undecidable manual PN 327 0.0104 -0.18 1.5
--.TR9.Z. 1985-03-23T23:49:05.20 10.0 undecidable manual PN 116 0.0109 -1.17 1
--.MNS.Z. 1985-03-23T23:49:04.60 10.0 undecidable manual PN 314 0.0102 -0.75 1.3
--.SOR.Z. 1985-03-23T23:49:02.70 10.0 undecidable manual PN 157 0.0098 -1.98 0.4
--.OVO.Z. 1985-03-23T23:49:01.00 10.0 undecidable manual PG 148 0.008 -0.3 1.5
--.AQU.Z. 1985-03-23T23:49:00.00 10.0 positive manual PG 339 0.0073 0.17 3.1
--.RMP.Z. 1985-03-23T23:48:59.00 10.0 undecidable manual PG 285 0.0075 -1.26 0.9
--.RDP.Z. 1985-03-23T23:48:59.60 10.0 undecidable manual PG 282 0.0073 -0.23 1.5
--.SGG.Z. 1985-03-23T23:48:51.80 10.0 undecidable manual PG 114 0.0044 -2.04 0.4
--.SD1.Z. 1985-03-23T23:48:49.00 10.0 undecidable manual SG 9 0.0011 -0.4 0.9
--.SD1.Z. 1985-03-23T23:48:45.80 10.0 negative manual PG 9 0.0011 -1.17 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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