Earthquake with magnitude of Md 2.5 on date 17-10-1986 and time 21:01:52 (Italy) in region Golfo di Manfredonia (Foggia)

A magnitude Md 2.5 earthquake occured in region: Golfo di Manfredonia (Foggia), on

  • 17-10-1986 20:01:52 (UTC)
  • 17-10-1986 21:01:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.5060, 15.9550 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
Zapponeta FG 6 3396 3396
Manfredonia FG 14 57279 60675
Trinitapoli BT 20 14733 75408

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Manfredonia (57279 inhabitants)
27 Km N of Cerignola (58396 inhabitants)
34 Km NW of Barletta (94814 inhabitants)
35 Km E of Foggia (151991 inhabitants)
42 Km NW of Andria (100440 inhabitants)
46 Km NW of Trani (56217 inhabitants)
52 Km E of San Severo (53905 inhabitants)
54 Km NW of Bisceglie (55422 inhabitants)
63 Km NW of Molfetta (59874 inhabitants)
76 Km NW of Bitonto (55540 inhabitants)
87 Km NW of Bari (326344 inhabitants)
90 Km NW of Altamura (70396 inhabitants)
97 Km N of Potenza (67122 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 2.5 1986-10-17
20:01:52
41.506 15.955 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 36079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-10-17 20:01:52 ± 0.563
Latitude 41.5060 ± 0.0365
Longitude 15.9550 ± 0.0289
Depth (km) 7 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 36079

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) 4724.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01449
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 36079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SD1.Z. 1986-10-17T20:02:43.00 10.0 undecidable manual SN 277 1.6095 0.71 0.5
--.SGG.Z. 1986-10-17T20:02:31.50 10.0 undecidable manual SN 264 1.1877 -0.59 0.6
--.DUI.Z. 1986-10-17T20:02:29.00 10.0 undecidable manual SN 278 1.1211 -1.73 0.2
--.SGO.Z. 1986-10-17T20:02:28.50 10.0 undecidable manual SN 207 1.0656 -0.68 0.6
--.SD1.Z. 1986-10-17T20:02:23.00 10.0 undecidable manual PN 277 1.6095 1.66 0.3
--.BAI.Z. 1986-10-17T20:02:21.00 10.0 undecidable manual SG 119 0.7881 0.23 0.7
--.SOR.Z. 1986-10-17T20:02:21.10 10.0 undecidable manual PN 233 1.5318 0.93 1
--.PE1.Z. 1986-10-17T20:02:17.50 10.0 undecidable manual PN 121 1.2987 0.4 1.6
--.DUI.Z. 1986-10-17T20:02:15.00 10.0 undecidable manual PN 278 1.1211 0.34 1.8
--.SGO.Z. 1986-10-17T20:02:14.50 10.0 undecidable manual PN 207 1.0656 0.73 1.4
--.SGG.Z. 1986-10-17T20:02:14.90 10.0 undecidable manual PN 264 1.1877 -0.55 1.5
--.BAI.Z. 1986-10-17T20:02:08.00 10.0 undecidable manual PG 119 0.7881 -0.91 1.2
--.TR9.Z. 1986-10-17T20:02:06.20 10.0 undecidable manual PG 230 0.7104 -1.09 0.9
--.MS1.Z. 1986-10-17T20:01:57.00 10.0 undecidable manual PG 357 0.1998 -0.38 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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