Earthquake with magnitude of Md 2.4 on date 15-12-1987 and time 05:41:07 (Italy) in region 2 km SW Andria (BT)

A magnitude Md 2.4 earthquake occured in region: 2 km SW Andria (BT), on

  • 15-12-1987 04:41:07 (UTC)
  • 15-12-1987 05:41:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.22, 16.28 at 2 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
Andria BT 2 100440 100440
Barletta BT 12 94814 195254
Corato BA 13 48312 243566
Trani BT 13 56217 299783
Canosa di Puglia BT 18 30294 330077
Bisceglie BT 19 55422 385499

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km SW of Andria (100440 inhabitants)
12 Km S of Barletta (94814 inhabitants)
13 Km SW of Trani (56217 inhabitants)
19 Km W of Bisceglie (55422 inhabitants)
27 Km W of Molfetta (59874 inhabitants)
32 Km E of Cerignola (58396 inhabitants)
37 Km W of Bitonto (55540 inhabitants)
49 Km NW of Altamura (70396 inhabitants)
50 Km W of Bari (326344 inhabitants)
55 Km SE of Manfredonia (57279 inhabitants)
67 Km NW of Matera (60436 inhabitants)
67 Km E of Foggia (151991 inhabitants)
76 Km NE of Potenza (67122 inhabitants)
91 Km SE of San Severo (53905 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
ML-VAX 1.8
1987-12-15
04:41:07
41.22 16.28 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 59609
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-12-15 04:41:07 ± 0.565
Latitude 41.22 ± 0.02
Longitude 16.28 ± 0.02
Depth (km) 2 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 59609

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) 2912.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00915
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 59609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:56:57

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 59609
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SGO.Z. 1987-12-15T04:41:41.54 10.0 undecidable manual SG 228 0.0088 -0.75 0.5
--.FG2.Z. 1987-12-15T04:41:41.79 10.0 undecidable manual SG 305 0.0091 -1.73 0
--.BRT.Z. 1987-12-15T04:41:33.87 10.0 undecidable manual SG 117 0.0066 -0.48 0.6
--.FG4.Z. 1987-12-15T04:41:30.28 10.0 undecidable manual SG 261 0.0052 0.99 0.3
--.FG2.Z. 1987-12-15T04:41:28.60 10.0 undecidable manual PG 305 0.0091 -0.12 1.6
--.SGO.Z. 1987-12-15T04:41:27.47 10.0 undecidable manual PG 228 0.0088 -0.01 1.6
--.PE1.Z. 1987-12-15T04:41:27.00 10.0 undecidable manual PG 115 0.0086 0.1 1.6
--.BRT.Z. 1987-12-15T04:41:23.27 10.0 undecidable manual PG 117 0.0066 0.38 1.6
--.FG4.Z. 1987-12-15T04:41:20.79 10.0 undecidable manual PG 261 0.0052 0.82 0.8
--.CDM.Z. 1987-12-15T04:41:12.50 10.0 undecidable manual SG 182 0.0012 -0.16 0.8
--.CDM.Z. 1987-12-15T04:41:10.00 10.0 undecidable manual PG 182 0.0012 -0.37 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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