Earthquake with magnitude of Md 2.8 on date 23-07-1986 and time 10:50:01 (Italy) in region 3 km N Atena Lucana (SA)

A magnitude Md 2.8 earthquake occured in region: 3 km N Atena Lucana (SA), on

  • 23-07-1986 08:50:01 (UTC)
  • 23-07-1986 10:50:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.49, 15.57 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
Atena Lucana SA 3 2336 2336
Brienza PZ 5 4078 6414
Sant'Angelo Le Fratte PZ 7 1429 7843
Sant'Arsenio SA 7 2815 10658
Polla SA 7 5279 15937
San Pietro al Tanagro SA 7 1695 17632
Satriano di Lucania PZ 9 2374 20006
Sala Consilina SA 9 12664 32670
Savoia di Lucania PZ 10 1127 33797
Sasso di Castalda PZ 10 835 34632
San Rufo SA 10 1754 36386
Caggiano SA 11 2765 39151
Pertosa SA 12 690 39841
Teggiano SA 12 7976 47817
Vietri di Potenza PZ 14 2832 50649
Auletta SA 14 2336 52985
Tito PZ 15 7332 60317
Salvitelle SA 15 560 60877
Sassano SA 16 5013 65890
Monte San Giacomo SA 16 1572 67462
Marsico Nuovo PZ 16 4098 71560
Corleto Monforte SA 17 592 72152
Petina SA 17 1159 73311
Picerno PZ 18 5985 79296
Padula SA 18 5368 84664
Paterno PZ 19 3368 88032
Balvano PZ 19 1830 89862
Sant'Angelo a Fasanella SA 19 635 90497
Romagnano al Monte SA 19 368 90865
Sacco SA 20 492 91357

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Potenza (67122 inhabitants)
51 Km E of Battipaglia (50786 inhabitants)
71 Km E of Salerno (135261 inhabitants)
76 Km E of Cava de' Tirreni (53659 inhabitants)
81 Km SE of Avellino (54857 inhabitants)
90 Km W of Matera (60436 inhabitants)
91 Km SW of Cerignola (58396 inhabitants)
92 Km W of Altamura (70396 inhabitants)
92 Km E of Scafati (50787 inhabitants)
95 Km E of Castellammare di Stabia (66466 inhabitants)
97 Km SE of Benevento (60091 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 2.8 1986-07-23
08:50:01
40.49 15.57 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 31479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-07-23 08:50:01 ± 0.286
Latitude 40.49 ± 0.01
Longitude 15.57 ± 0.02
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 31479

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) 2358.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.01141
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 31479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:32:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRT.Z. 1986-07-23T08:50:26.00 10.0 undecidable manual PN 71 0.0113 0.34 1.1
--.SGG.Z. 1986-07-23T08:50:25.40 10.0 undecidable manual PN 315 0.0114 -0.4 0.9
--.TS9.Z. 1986-07-23T08:50:22.00 10.0 undecidable manual PG 144 0.0091 -0.11 1.6
--.CSI.Z. 1986-07-23T08:50:20.70 10.0 undecidable manual PG 141 0.008 0.82 0.3
--.ORI.Z. 1986-07-23T08:50:17.50 10.0 undecidable manual PG 122 0.0071 -0.59 0.8
--.MG9.Z. 1986-07-23T08:50:15.50 10.0 undecidable manual SG 181 0.0031 0 0.8
--.SGO.Z. 1986-07-23T08:50:11.00 10.0 undecidable manual SG 290 0.0019 0.62 0.3
--.MG9.Z. 1986-07-23T08:50:09.50 10.0 undecidable manual PG 181 0.0031 -0.26 1.7
--.SGO.Z. 1986-07-23T08:50:06.50 10.0 undecidable manual PG 290 0.0019 -0.3 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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