Earthquake with magnitude of Md 2.5 on date 28-05-1998 and time 13:33:26 (Italy) in region 8 km NE Grottole (MT)

A magnitude Md 2.5 earthquake occured in region: 8 km NE Grottole (MT), on

  • 28-05-1998 11:33:26 (UTC)
  • 28-05-1998 13:33:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.662, 16.438 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
Grottole MT 8 2208 2208
Miglionico MT 12 2510 4718
Grassano MT 13 5189 9907
Matera MT 14 60436 70343
Gravina in Puglia BA 18 43872 114215
Salandra MT 18 2829 117044
Pomarico MT 18 4145 121189
Ferrandina MT 19 8853 130042
Irsina MT 19 4960 135002

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Matera (60436 inhabitants)
21 Km SW of Altamura (70396 inhabitants)
53 Km E of Potenza (67122 inhabitants)
54 Km SW of Bitonto (55540 inhabitants)
62 Km S of Molfetta (59874 inhabitants)
63 Km SW of Bari (326344 inhabitants)
64 Km S of Andria (100440 inhabitants)
65 Km S of Bisceglie (55422 inhabitants)
68 Km S of Trani (56217 inhabitants)
70 Km W of Taranto (201100 inhabitants)
74 Km S of Barletta (94814 inhabitants)
81 Km SE of Cerignola (58396 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 1.7
1998-05-28
11:33:26
40.662 16.438 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 339979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-05-28 11:33:26 ± 0.162
Latitude 40.6620 ± 0.0080
Longitude 16.4380 ± 0.0078
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 339979

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) 1109.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
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) 0.00259
Epicentral distance of station farthest from the epicenter (degree) 0.00996
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 4
Type of magnitude Md
Reference to an origin 339979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:18:27

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 339979
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 Takeoff_angle Residual Weight
--.FG3.Z. 1998-05-28T11:34:04.32 10.0 undecidable manual SN 341 0.01 0.2 0.5
--.SGO.Z. 1998-05-28T11:33:59.93 10.0 undecidable manual SG! 263 0.0078 3.19 0
--.MU9.Z. 1998-05-28T11:33:51.86 10.0 undecidable manual SG 278 0.0065 -0.46 0.1
--.ORI.Z. 1998-05-28T11:33:49.50 10.0 undecidable manual SG 179 0.0054 0.42 0.2
--.FG3.Z. 1998-05-28T11:33:48.58 10.0 undecidable manual PN 341 0.01 0.3 0.8
--.BRT.Z. 1998-05-28T11:33:47.16 10.0 undecidable manual SG 68 0.0052 -0.39 0.2
--.SGO.Z. 1998-05-28T11:33:43.78 10.0 undecidable manual PG 263 0.0078 -0.24 1.2
--.MU9.Z. 1998-05-28T11:33:41.63 10.0 undecidable manual PG 278 0.0065 0.16 1.7
--.ORI.Z. 1998-05-28T11:33:39.20 10.0 undecidable manual PG 179 0.0054 -0.13 1.9
--.BRT.Z. 1998-05-28T11:33:38.62 10.0 undecidable manual PG 68 0.0052 -0.09 2
--.LT9.Z. 1998-05-28T11:33:38.80 10.0 undecidable manual SG 101 0.0026 -0.18 0.7
--.LT9.Z. 1998-05-28T11:33:33.51 10.0 undecidable manual PG 101 0.0026 0.17 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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