ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.5 on date 01-12-1985 and time 13:31:43 (Italy) in region 2 km SW San Massimo (CB)

A magnitude Md 2.5 earthquake occured in region: 2 km SW San Massimo (CB), on

  • 01-12-1985 12:31:43 (UTC)
  • 01-12-1985 13:31:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.48, 14.4 at 11 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
San Massimo CB 2 855 855
Roccamandolfi IS 4 938 1793
Cantalupo nel Sannio IS 5 739 2532
Bojano CB 6 8058 10590
San Polo Matese CB 8 470 11060
Santa Maria del Molise IS 9 665 11725
Macchiagodena IS 9 1854 13579
Campochiaro CB 10 646 14225
Castelpizzuto IS 10 155 14380
Castelpetroso IS 10 1680 16060
San Gregorio Matese CE 10 988 17048
Spinete CB 11 1320 18368
Colle d'Anchise CB 11 807 19175
Castello del Matese CE 12 1494 20669
Letino CE 13 712 21381
Sant'Elena Sannita IS 13 275 21656
Guardiaregia CB 13 801 22457
Valle Agricola CE 13 890 23347
Longano IS 14 690 24037
Piedimonte Matese CE 14 11297 35334
Carpinone IS 14 1157 36491
Gallo Matese CE 14 579 37070
Frosolone IS 15 3170 40240
Pettoranello del Molise IS 15 460 40700
Baranello CB 15 2673 43373
San Potito Sannitico CE 15 1925 45298
Casalciprano CB 16 564 45862
Vinchiaturo CB 16 3324 49186
Sant'Agapito IS 16 1496 50682
Busso CB 16 1273 51955
Prata Sannita CE 17 1502 53457
Sant'Angelo d'Alife CE 17 2270 55727
Raviscanina CE 17 1319 57046
Alife CE 17 7616 64662
Pesche IS 18 1661 66323
Fontegreca CE 18 811 67134
Cusano Mutri BN 18 4091 71225
Ailano CE 19 1369 72594
Sessano del Molise IS 19 727 73321
Isernia IS 19 21842 95163
Molise CB 19 167 95330
Monteroduni IS 19 2264 97594
Pietraroja BN 19 545 98139
Pratella CE 20 1565 99704
Oratino CB 20 1641 101345

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km N of Caserta (76326 inhabitants)
50 Km NW of Benevento (60091 inhabitants)
58 Km N of Aversa (53047 inhabitants)
59 Km N of Acerra (59573 inhabitants)
62 Km N of Afragola (65057 inhabitants)
63 Km N of Giugliano in Campania (122974 inhabitants)
64 Km N of Casoria (77642 inhabitants)
67 Km N of Marano di Napoli (59874 inhabitants)
71 Km NW of Avellino (54857 inhabitants)
72 Km N of Napoli (974074 inhabitants)
73 Km N of Portici (55274 inhabitants)
74 Km N of Ercolano (53709 inhabitants)
75 Km NE of Pozzuoli (81661 inhabitants)
77 Km N of Torre del Greco (86275 inhabitants)
82 Km N of Scafati (50787 inhabitants)
85 Km W of San Severo (53905 inhabitants)
87 Km N of Castellammare di Stabia (66466 inhabitants)
90 Km N of Cava de' Tirreni (53659 inhabitants)
94 Km NW of Salerno (135261 inhabitants)
96 Km W of Foggia (151991 inhabitants)
99 Km S of Chieti (51815 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 2.5 1985-12-01
12:31:43
41.48 14.4 11 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 17189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-01 12:31:43 ± 0.896
Latitude 41.48 ± 0.03
Longitude 14.40 ± 0.07
Depth (km) 11 ± 11 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 17189

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) 7264.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00445
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 17189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:20:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MSC.Z. 1985-12-01T12:32:01.00 10.0 undecidable manual SG 228 0.0038 1.34 0
--.SD1.Z. 1985-12-01T12:31:54.00 10.0 undecidable manual PG 297 0.0045 -0.28 0.9
--.DUI.Z. 1985-12-01T12:31:52.50 10.0 undecidable manual SG 14 0.0016 0.57 0.5
--.MSC.Z. 1985-12-01T12:31:52.20 10.0 undecidable manual PG 228 0.0038 -0.84 0.3
--.SGG.Z. 1985-12-01T12:31:49.00 10.0 undecidable manual SG 188 0.0008 -0.12 0.6
--.DUI.Z. 1985-12-01T12:31:48.50 10.0 undecidable manual PG 14 0.0016 -0.07 1.5
--.SGG.Z. 1985-12-01T12:31:46.90 10.0 positive manual PG 188 0.0008 -0.05 3.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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