Earthquake with magnitude of Md 2.9 on date 11-02-1987 and time 11:47:31 (Italy) in region 1 km SE Francavilla in Sinni (PZ)

A magnitude Md 2.9 earthquake occured in region: 1 km SE Francavilla in Sinni (PZ), on

  • 11-02-1987 10:47:31 (UTC)
  • 11-02-1987 11:47:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.073, 16.214 at 24 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
Francavilla in Sinni PZ 1 4215 4215
Chiaromonte PZ 6 1965 6180
Fardella PZ 6 627 6807
Teana PZ 8 613 7420
San Severino Lucano PZ 9 1563 8983
San Costantino Albanese PZ 9 729 9712
Episcopia PZ 10 1434 11146
Noepoli PZ 10 878 12024
Senise PZ 10 7115 19139
Calvera PZ 10 387 19526
San Paolo Albanese PZ 11 294 19820
Cersosimo PZ 12 656 20476
Terranova di Pollino PZ 13 1208 21684
Carbone PZ 13 638 22322
Castronuovo di Sant'Andrea PZ 13 1067 23389
Viggianello PZ 15 3025 26414
San Giorgio Lucano MT 16 1217 27631
Roccanova PZ 16 1543 29174
Latronico PZ 18 4556 33730
San Chirico Raparo PZ 18 1084 34814
Alessandria del Carretto CS 19 462 35276
Oriolo CS 20 2223 37499

Municipalities with at least 50000 inhabitants

An earthquake occurred to
72 Km SE of Potenza (67122 inhabitants)
74 Km SW of Matera (60436 inhabitants)
87 Km N of Cosenza (67546 inhabitants)
89 Km SW of Altamura (70396 inhabitants)
97 Km W of Taranto (201100 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 2.9 1987-02-11
10:47:31
40.073 16.214 24 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 41059
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-02-11 10:47:31 ± 0.36
Latitude 40.0730 ± 0.0279
Longitude 16.2140 ± 0.0464
Depth (km) 24 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 41059

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) 5024.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00154
Epicentral distance of station farthest from the epicenter (degree) 0.01797
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 41059
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:40:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRT.Z. 1987-02-11T10:48:06.00 10.0 undecidable manual SN 41 0.0096 1.09 0.7
--.SO9.Z. 1987-02-11T10:48:04.00 10.0 undecidable manual PN 183 0.018 0.3 1.5
--.SGG.Z. 1987-02-11T10:48:03.10 10.0 undecidable manual PN 314 0.0172 0.66 1.3
--.SOR.Z. 1987-02-11T10:47:57.00 10.0 undecidable manual PN 290 0.0136 -0.04 1.9
--.TR9.Z. 1987-02-11T10:47:54.20 10.0 undecidable manual PN! 322 0.011 1.17 0
--.GR9.Z. 1987-02-11T10:47:53.50 10.0 undecidable manual PN 172 0.0113 -0.07 2.1
--.TS9.Z. 1987-02-11T10:47:50.00 10.0 undecidable manual SG 167 0.0038 1.95 0.1
--.BRT.Z. 1987-02-11T10:47:49.50 10.0 undecidable manual PN 41 0.0096 -1.38 0.7
--.SGO.Z. 1987-02-11T10:47:43.00 10.0 undecidable manual PN! 305 0.0075 -4.78 0
--.ORI.Z. 1987-02-11T10:47:42.00 10.0 undecidable manual SG 97 0.0015 0.61 0.8
--.TS9.Z. 1987-02-11T10:47:39.70 10.0 undecidable manual PG 167 0.0038 -1.44 0.7
--.ORI.Z. 1987-02-11T10:47:37.50 10.0 undecidable manual PG 97 0.0015 0.2 2.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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