Earthquake with magnitude of Md 2.1 on date 17-04-1987 and time 21:27:13 (UTC) in region 4 km SE Monte Sant'Angelo (FG)

A magnitude Md 2.1 earthquake occured in region: 4 km SE Monte Sant'Angelo (FG), on

  • 17-04-1987 21:27:13 (UTC)
  • 17-04-1987 23:27:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.681, 15.998 at 12 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
Monte Sant'Angelo FG 4 12657 12657
Mattinata FG 6 6310 18967
Manfredonia FG 9 57279 76246

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NE of Manfredonia (57279 inhabitants)
45 Km NE of Foggia (151991 inhabitants)
46 Km NW of Barletta (94814 inhabitants)
47 Km N of Cerignola (58396 inhabitants)
51 Km E of San Severo (53905 inhabitants)
56 Km NW of Andria (100440 inhabitants)
57 Km NW of Trani (56217 inhabitants)
64 Km NW of Bisceglie (55422 inhabitants)
73 Km NW of Molfetta (59874 inhabitants)
86 Km NW of Bitonto (55540 inhabitants)
95 Km NW of Bari (326344 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 2.1 1987-04-17
21:27:13
41.681 15.998 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 45109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-04-17 21:27:13 ± 0.214
Latitude 41.6810 ± 0.0138
Longitude 15.9980 ± 0.0134
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 45109

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) 1892.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.01238
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 45109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:44:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PE1.Z. 1987-04-17T21:27:38.50 10.0 undecidable manual PN 128 0.0124 -0.25 0.8
--.FG5.Z. 1987-04-17T21:27:37.00 10.0 undecidable manual SG 234 0.0061 -0.63 0.1
--.FG4.Z. 1987-04-17T21:27:37.00 10.0 undecidable manual SG 213 0.0058 0.02 0.8
--.CDM.Z. 1987-04-17T21:27:36.00 10.0 undecidable manual SG 161 0.0057 -0.36 0.3
--.BAI.Z. 1987-04-17T21:27:31.50 10.0 undecidable manual PG 130 0.0079 0.2 1.3
--.FG5.Z. 1987-04-17T21:27:27.70 10.0 undecidable manual PG 234 0.0061 0.07 1.8
--.FG4.Z. 1987-04-17T21:27:27.70 10.0 undecidable manual PG 213 0.0058 0.44 0.6
--.CDM.Z. 1987-04-17T21:27:27.00 10.0 undecidable manual PG 161 0.0057 0.09 1.8
--.MS1.Z. 1987-04-17T21:27:19.00 10.0 undecidable manual SG 299 0.0004 0.48 0.2
--.FG3.Z. 1987-04-17T21:27:18.00 10.0 undecidable manual SG 306 0.0003 -0.47 0.2
--.MS1.Z. 1987-04-17T21:27:16.50 10.0 undecidable manual PG 299 0.0004 -0.1 2
--.FG3.Z. 1987-04-17T21:27:16.50 10.0 undecidable manual PG 306 0.0003 -0.07 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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