Earthquake with magnitude of Md 2.5 on date 21-08-1998 and time 21:48:23 (Italy) in region Costa Garganica (Foggia)

A magnitude Md 2.5 earthquake occured in region: Costa Garganica (Foggia), on

  • 21-08-1998 19:48:23 (UTC)
  • 21-08-1998 21:48:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.9720, 15.5950 at 5 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
San Nicandro Garganico FG 15 15566 15566
Isole Tremiti FG 18 469 16035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of San Severo (53905 inhabitants)
47 Km NW of Manfredonia (57279 inhabitants)
57 Km N of Foggia (151991 inhabitants)
83 Km NW of Cerignola (58396 inhabitants)
92 Km NW of Barletta (94814 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
ML-VAX 1.8
1998-08-21
19:48:23
41.972 15.595 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 349149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-21 19:48:23 ± 1.015
Latitude 41.9720 ± 0.0601
Longitude 15.5950 ± 0.0267
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 349149

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) 7033.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 252
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00324
Epicentral distance of station farthest from the epicenter (degree) 0.01085
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 349149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:27:03

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 349149
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(km) Takeoff_angle Residual Weight
--.MU9.Z. 1998-08-21T19:49:02.95 10.0 undecidable manual SN 183 1.1988 -0.75 0.4
--.CI9.Z. 1998-08-21T19:49:02.60 10.0 undecidable manual SN 200 1.1877 -0.57 0.5
--.VTB1.Z. 1998-08-21T19:49:00.23 10.0 undecidable manual SG 222 1.0656 0.02 0.8
--.FG5.Z. 1998-08-21T19:48:51.26 10.0 undecidable manual SG 199 0.7326 1.88 0.1
--.CI9.Z. 1998-08-21T19:48:47.10 10.0 undecidable manual PN 200 1.1877 0.8 1.2
--.MU9.Z. 1998-08-21T19:48:46.24 10.0 undecidable manual PN 183 1.1988 -0.27 1.7
--.VTB1.Z. 1998-08-21T19:48:45.61 10.0 undecidable manual PG 222 1.0656 1.11 0.8
--.FG5.Z. 1998-08-21T19:48:38.39 10.0 undecidable manual PG 199 0.7326 0.15 2.2
--.FG3.Z. 1998-08-21T19:48:36.44 10.0 undecidable manual SG 134 0.3663 -1.09 0.3
--.FG2.Z. 1998-08-21T19:48:35.87 10.0 undecidable manual SG 242 0.3552 -1.28 0.2
--.FG3.Z. 1998-08-21T19:48:31.48 10.0 undecidable manual PG 134 0.3663 0.07 2.2
--.FG2.Z. 1998-08-21T19:48:30.55 10.0 undecidable manual PG 242 0.3552 -0.64 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download