Earthquake with magnitude of Md 2.4 on date 15-02-1987 and time 08:26:39 (UTC) in region 2 km E Brienza (PZ)

A magnitude Md 2.4 earthquake occured in region: 2 km E Brienza (PZ), on

  • 15-02-1987 08:26:39 (UTC)
  • 15-02-1987 09:26:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.4800, 15.6540 at 21 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
Brienza PZ 2 4078 4078
Sasso di Castalda PZ 2 835 4913
Satriano di Lucania PZ 8 2374 7287
Atena Lucana SA 9 2336 9623
Marsico Nuovo PZ 10 4098 13721
Sala Consilina SA 10 12664 26385
Sant'Angelo Le Fratte PZ 11 1429 27814
Tito PZ 12 7332 35146
Paterno PZ 13 3368 38514
Savoia di Lucania PZ 13 1127 39641
Abriola PZ 14 1531 41172
Sant'Arsenio SA 14 2815 43987
Polla SA 14 5279 49266
San Pietro al Tanagro SA 14 1695 50961
Teggiano SA 15 7976 58937
Padula SA 15 5368 64305
Pignola PZ 15 6962 71267
Calvello PZ 16 1948 73215
Caggiano SA 17 2765 75980
San Rufo SA 17 1754 77734
Sassano SA 17 5013 82747
Picerno PZ 18 5985 88732
Monte San Giacomo SA 18 1572 90304
Vietri di Potenza PZ 18 2832 93136
Pertosa SA 19 690 93826
Marsicovetere PZ 19 5546 99372

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Potenza (67122 inhabitants)
58 Km E of Battipaglia (50786 inhabitants)
79 Km E of Salerno (135261 inhabitants)
83 Km W of Matera (60436 inhabitants)
84 Km E of Cava de' Tirreni (53659 inhabitants)
85 Km W of Altamura (70396 inhabitants)
87 Km SE of Avellino (54857 inhabitants)
90 Km S of Cerignola (58396 inhabitants)
99 Km SW of Andria (100440 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
Bulletin
Rev1000
Md 2.4
M 2.8
1987-02-15
08:26:39
40.48 15.654 21 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 41429
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-15 08:26:39 ± 0.328
Latitude 40.4800 ± 0.0364
Longitude 15.6540 ± 0.1183
Depth (km) 21 ± 12 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 41429

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) 10788.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01077
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 41429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:41:13

M:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 41429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:42:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.BRT.Z. 1987-02-15T08:27:17.00 10.0 undecidable manual SN 70 1.1988 0.26 0.3
--.ORI.Z. 1987-02-15T08:27:07.00 10.0 undecidable manual SN 124 0.7326 1.19 0
--.BRT.Z. 1987-02-15T08:27:01.00 10.0 undecidable manual PN 70 1.1988 -0.16 0.9
--.ORI.Z. 1987-02-15T08:26:55.00 10.0 undecidable manual PN 124 0.7326 0.15 1.2
--.MG9.Z. 1987-02-15T08:26:54.00 10.0 undecidable manual SG 192 0.3441 0.31 0.4
--.SGO.Z. 1987-02-15T08:26:52.00 10.0 undecidable manual SG 286 0.2664 0.5 0.6
--.MG9.Z. 1987-02-15T08:26:47.50 10.0 undecidable manual PG 192 0.3441 -0.36 0.9
--.SGO.Z. 1987-02-15T08:26:46.50 10.0 positive manual PG 286 0.2664 -0.09 3.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download