INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 2.6 on date 12-12-1985 and time 18:50:06 (UTC) in region 1 km W Pietraroja (BN)

A magnitude Md 2.6 earthquake occured in region: 1 km W Pietraroja (BN), on

  • 12-12-1985 18:50:06 (UTC)
  • 12-12-1985 19:50:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.35, 14.54 at 8 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
Pietraroja BN 1 545 545
Cusano Mutri BN 2 4091 4636
Cerreto Sannita BN 7 3940 8576
San Lorenzello BN 8 2227 10803
Faicchio BN 9 3634 14437
Gioia Sannitica CE 9 3638 18075
Sepino CB 10 1964 20039
Guardiaregia CB 10 801 20840
Morcone BN 11 4932 25772
Sassinoro BN 11 618 26390
Guardia Sanframondi BN 12 5078 31468
Campochiaro CB 12 646 32114
San Potito Sannitico CE 12 1925 34039
Castelvenere BN 13 2562 36601
San Salvatore Telesino BN 13 3999 40600
San Lupo BN 13 801 41401
San Polo Matese CB 13 470 41871
Castello del Matese CE 13 1494 43365
San Lorenzo Maggiore BN 13 2154 45519
Piedimonte Matese CE 13 11297 56816
San Gregorio Matese CE 14 988 57804
Telese Terme BN 14 7486 65290
Pontelandolfo BN 15 2167 67457
San Giuliano del Sannio CB 15 1029 68486
Puglianello BN 16 1349 69835
Bojano CB 16 8058 77893
Casalduni BN 17 1378 79271
Alife CE 17 7616 86887
Cercepiccola CB 17 681 87568
Vinchiaturo CB 17 3324 90892
Amorosi BN 17 2797 93689
Solopaca BN 17 3820 97509
Santa Croce del Sannio BN 17 927 98436
Campolattaro BN 18 1072 99508
Colle d'Anchise CB 18 807 100315
Ruviano CE 18 1655 101970
San Massimo CB 19 855 102825
Castel Campagnano CE 20 1581 104406
Ponte BN 20 2580 106986
Paupisi BN 20 1633 108619

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Benevento (60091 inhabitants)
35 Km NE of Caserta (76326 inhabitants)
47 Km N of Acerra (59573 inhabitants)
50 Km NE of Aversa (53047 inhabitants)
51 Km NE of Afragola (65057 inhabitants)
53 Km NW of Avellino (54857 inhabitants)
53 Km NE of Casoria (77642 inhabitants)
54 Km NE of Giugliano in Campania (122974 inhabitants)
58 Km NE of Marano di Napoli (59874 inhabitants)
60 Km N of Portici (55274 inhabitants)
61 Km NE of Napoli (974074 inhabitants)
62 Km N of Ercolano (53709 inhabitants)
64 Km N of Torre del Greco (86275 inhabitants)
67 Km N of Scafati (50787 inhabitants)
67 Km NE of Pozzuoli (81661 inhabitants)
73 Km N of Castellammare di Stabia (66466 inhabitants)
73 Km N of Cava de' Tirreni (53659 inhabitants)
77 Km N of Salerno (135261 inhabitants)
80 Km W of San Severo (53905 inhabitants)
85 Km W of Foggia (151991 inhabitants)
90 Km NW of Battipaglia (50786 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 2.6 1985-12-12
18:50:06
41.35 14.54 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17969
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-12 18:50:06 ± 0.406
Latitude 41.35 ± 0.03
Longitude 14.54 ± 0.04
Depth (km) 8 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17969

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) 4643.7
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 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00882
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 17969
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1985-12-12T18:50:30.00 10.0 undecidable manual SG 303 0.0058 0.39 0.4
--.SGO.Z. 1985-12-12T18:50:25.00 10.0 undecidable manual PG 143 0.0088 -0.93 0.3
--.TR9.Z. 1985-12-12T18:50:20.00 10.0 undecidable manual PG 119 0.0054 1.05 0.3
--.SD1.Z. 1985-12-12T18:50:20.00 10.0 undecidable manual PG 303 0.0058 0.17 1.3
--.DUI.Z. 1985-12-12T18:50:19.00 10.0 undecidable manual SG 349 0.0028 0.15 0.6
--.DUI.Z. 1985-12-12T18:50:13.00 10.0 undecidable manual PG 349 0.0028 -0.61 0.9
--.SGG.Z. 1985-12-12T18:50:09.70 10.0 negative manual PG 288 0.0011 0.04 3.1
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