Earthquake with magnitude of Md 2.3 on date 04-01-1987 and time 04:28:49 (UTC) in region Golfo di Manfredonia (Foggia)

A magnitude Md 2.3 earthquake occured in region: Golfo di Manfredonia (Foggia), on

  • 04-01-1987 04:28:49 (UTC)
  • 04-01-1987 05:28:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.61, 15.966 at 11 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
Manfredonia FG 4 57279 57279
Monte Sant'Angelo FG 11 12657 69936
Mattinata FG 13 6310 76246
Zapponeta FG 17 3396 79642

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km SE of Manfredonia (57279 inhabitants)
39 Km N of Cerignola (58396 inhabitants)
39 Km E of Foggia (151991 inhabitants)
41 Km NW of Barletta (94814 inhabitants)
49 Km E of San Severo (53905 inhabitants)
51 Km NW of Andria (100440 inhabitants)
53 Km NW of Trani (56217 inhabitants)
61 Km NW of Bisceglie (55422 inhabitants)
70 Km NW of Molfetta (59874 inhabitants)
82 Km NW of Bitonto (55540 inhabitants)
93 Km NW of Bari (326344 inhabitants)
100 Km NW of Altamura (70396 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 2.3 1987-01-04
04:28:49
41.61 15.966 11 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 38849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-01-04 04:28:49 ± 0.439
Latitude 41.6100 ± 0.0351
Longitude 15.9660 ± 0.0447
Depth (km) 11 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 38849

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) 5384.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.01036
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 38849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:38:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BRT.Z. 1987-01-04T04:29:10.50 10.0 undecidable manual PN 129 0.0104 -0.56 1.1
--.FG2.Z. 1987-01-04T04:29:10.50 10.0 undecidable manual SG 288 0.0057 -0.97 0.4
--.FG4.Z. 1987-01-04T04:29:09.00 10.0 undecidable manual SG 215 0.0053 -0.96 0.4
--.FG5.Z. 1987-01-04T04:29:09.50 10.0 undecidable manual SG 238 0.0055 -1.51 0.1
--.FG2.Z. 1987-01-04T04:29:03.00 10.0 undecidable manual PG 288 0.0057 0.9 1.1
--.FG4.Z. 1987-01-04T04:29:02.00 10.0 undecidable manual PG 215 0.0053 0.77 1.3
--.FG5.Z. 1987-01-04T04:29:02.50 10.0 undecidable manual PG 238 0.0055 0.66 1.4
--.FOG.Z. 1987-01-04T04:28:56.70 10.0 undecidable manual PG 242 0.0031 -0.18 2.1
--.FG3.Z. 1987-01-04T04:28:53.00 10.0 undecidable manual SG 352 0.0008 -1.59 0.1
--.FG3.Z. 1987-01-04T04:28:52.80 10.0 undecidable manual PG 352 0.0008 0.45 1.9
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