Earthquake with magnitude of Md 2.7 on date 11-04-1985 and time 01:13:32 (Italy) in region 9 km W Manfredonia (FG)

A magnitude Md 2.7 earthquake occured in region: 9 km W Manfredonia (FG), on

  • 10-04-1985 23:13:32 (UTC)
  • 11-04-1985 01:13:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.64, 15.82 at 10 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 9 57279 57279
San Giovanni Rotondo FG 10 27184 84463
Monte Sant'Angelo FG 14 12657 97120
San Marco in Lamis FG 17 13831 110951
Rignano Garganico FG 19 2117 113068

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km W of Manfredonia (57279 inhabitants)
30 Km NE of Foggia (151991 inhabitants)
37 Km E of San Severo (53905 inhabitants)
43 Km N of Cerignola (58396 inhabitants)
53 Km NW of Barletta (94814 inhabitants)
61 Km NW of Andria (100440 inhabitants)
65 Km NW of Trani (56217 inhabitants)
73 Km NW of Bisceglie (55422 inhabitants)
82 Km NW of Molfetta (59874 inhabitants)
94 Km NW of Bitonto (55540 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
Rev 1000 Md 2.7 1985-04-10
23:13:32
41.64 15.82 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-10 23:13:32 ± 0.34
Latitude 41.64 ± 0.04
Longitude 15.82 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4499

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) 4748.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.01344
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 4499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1985-04-10T23:14:18.00 10.0 undecidable manual SN 273 0.0134 -0.27 0.6
--.BRT.Z. 1985-04-10T23:14:14.50 10.0 undecidable manual SN 127 0.0113 1.88 0
--.SD1.Z. 1985-04-10T23:13:59.00 10.0 undecidable manual PN 273 0.0134 0.23 1.5
--.BRT.Z. 1985-04-10T23:13:55.50 10.0 undecidable manual PN 127 0.0113 -0.01 1.7
--.BAI.Z. 1985-04-10T23:13:50.00 10.0 undecidable manual PG 123 0.0086 -1.03 0.7
--.MS1.Z. 1985-04-10T23:13:38.00 10.0 undecidable manual SG 56 0.001 0.35 0.7
--.MS1.Z. 1985-04-10T23:13:35.00 10.0 undecidable manual PG 56 0.001 -0.32 1.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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