ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Md 2.5 on date 04-01-1986 and time 05:28:43 (Italy) in region 3 km SE Laviano (SA)

A magnitude Md 2.5 earthquake occured in region: 3 km SE Laviano (SA), on

  • 04-01-1986 04:28:43 (UTC)
  • 04-01-1986 05:28:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.76, 15.34 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
Laviano SA 3 1438 1438
Santomenna SA 5 443 1881
Colliano SA 6 3638 5519
Valva SA 6 1643 7162
Castelnuovo di Conza SA 6 619 7781
Castelgrande PZ 9 943 8724
Sant'Andrea di Conza AV 10 1539 10263
Pescopagano PZ 10 1910 12173
Calabritto AV 10 2391 14564
Conza della Campania AV 11 1373 15937
Caposele AV 11 3483 19420
Senerchia AV 11 842 20262
Oliveto Citra SA 12 3802 24064
Teora AV 12 1537 25601
Palomonte SA 12 3985 29586
Muro Lucano PZ 13 5497 35083
San Gregorio Magno SA 13 4286 39369
Buccino SA 15 5047 44416
Contursi Terme SA 15 3394 47810
Cairano AV 15 326 48136
Ricigliano SA 16 1144 49280
Rapone PZ 17 990 50270
Romagnano al Monte SA 17 368 50638
Bella PZ 17 5171 55809
Calitri AV 18 4666 60475
Lioni AV 18 6201 66676
San Fele PZ 18 3004 69680
Andretta AV 19 1927 71607
Morra De Sanctis AV 19 1297 72904
Balvano PZ 20 1830 74734
Ruvo del Monte PZ 20 1083 75817

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Battipaglia (50786 inhabitants)
42 Km W of Potenza (67122 inhabitants)
48 Km E of Avellino (54857 inhabitants)
49 Km E of Salerno (135261 inhabitants)
53 Km E of Cava de' Tirreni (53659 inhabitants)
62 Km SE of Benevento (60091 inhabitants)
68 Km E of Scafati (50787 inhabitants)
72 Km E of Castellammare di Stabia (66466 inhabitants)
74 Km SW of Cerignola (58396 inhabitants)
80 Km S of Foggia (151991 inhabitants)
82 Km E of Torre del Greco (86275 inhabitants)
83 Km E of Portici (55274 inhabitants)
83 Km E of Ercolano (53709 inhabitants)
84 Km E of Acerra (59573 inhabitants)
88 Km E of Afragola (65057 inhabitants)
89 Km E of Casoria (77642 inhabitants)
91 Km E of Caserta (76326 inhabitants)
92 Km E of Napoli (974074 inhabitants)
96 Km SW of Andria (100440 inhabitants)
97 Km E of Giugliano in Campania (122974 inhabitants)
97 Km E of Marano di Napoli (59874 inhabitants)
98 Km E of Aversa (53047 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 1986-01-04
04:28:43
40.76 15.34 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 19409
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-01-04 04:28:43 ± 0.424
Latitude 40.76 ± 0.03
Longitude 15.34 ± 0.06
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 19409

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) 6287
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 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01336
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 1
Type of magnitude Md
Reference to an origin 19409
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:22:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BAI.Z. 1986-01-04T04:29:24.00 10.0 undecidable manual SN 73 0.0109 1.57 0
--.SD1.Z. 1986-01-04T04:29:10.00 10.0 undecidable manual PN 309 0.0134 0.51 0.9
--.BAI.Z. 1986-01-04T04:29:05.50 10.0 undecidable manual PN 73 0.0109 -0.29 1.2
--.MS1.Z. 1986-01-04T04:29:02.50 10.0 undecidable manual PN 25 0.0094 -0.96 0.6
--.SGO.Z. 1986-01-04T04:28:50.50 10.0 undecidable manual SG 185 0.0018 -1.04 0.2
--.SGO.Z. 1986-01-04T04:28:48.20 10.0 positive manual PG 185 0.0018 0.25 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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