Earthquake with magnitude of Md 3.0 on date 31-08-1998 and time 19:48:36 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 3.0 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 31-08-1998 17:48:36 (UTC)
  • 31-08-1998 19:48:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.664, 14.006 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
78 Km NE of Bagheria (55387 inhabitants)
83 Km NE of Palermo (674435 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 3.0
ML-VAX 2.5
1998-08-31
17:48:36
38.664 14.006 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 349939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-08-31 17:48:36 ± 0.244
Latitude 38.6640 ± 0.0176
Longitude 14.0060 ± 0.0185
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 349939

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) 2528.4
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 16
Number of defining phases 16
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) 0.00575
Epicentral distance of station farthest from the epicenter (degree) 0.01854
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 349939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:27:48

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 8
Type of magnitude ML
Reference to an origin 349939
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
--.TDS.Z. 1998-08-31T17:49:12.43 10.0 undecidable manual PN 59 0.0185 0.5 1
--.MNO.Z. 1998-08-31T17:49:09.11 10.0 undecidable manual SG 142 0.0082 0.29 0.7
--.MEU.Z. 1998-08-31T17:49:07.59 10.0 undecidable manual PN 156 0.0151 0.87 0.6
--.AU9.Z. 1998-08-31T17:49:07.15 10.0 undecidable manual PN 144 0.0153 0.14 1.5
--.SOI.Z. 1998-08-31T17:49:06.90 10.0 undecidable manual PN 109 0.0154 -0.2 1.5
--.FAVR.Z. 1998-08-31T17:49:05.48 10.0 undecidable manual PN! 190 0.0127 2.38 0
--.MO9.Z. 1998-08-31T17:49:04.47 10.0 undecidable manual PN 115 0.0133 0.54 1.2
--.LVI.Z. 1998-08-31T17:49:03.16 10.0 undecidable manual PN 242 0.0132 -0.69 1
--.USI.Z. 1998-08-31T17:49:01.21 10.0 undecidable manual SG 273 0.0057 0.82 0.3
--.GIB.Z. 1998-08-31T17:49:01.44 10.0 undecidable manual SG 178 0.0061 0.14 0.7
--.SC9.Z. 1998-08-31T17:49:01.31 10.0 undecidable manual PN 105 0.0125 -1.5 0.1
--.ERC.Z. 1998-08-31T17:49:00.17 10.0 undecidable manual PN 240 0.0114 -0.97 0.6
--.MNO.Z. 1998-08-31T17:48:55.46 10.0 undecidable manual PG 142 0.0082 0.18 1.8
--.CS9.Z. 1998-08-31T17:48:51.87 10.0 undecidable manual PG 175 0.0065 -0.06 1.8
--.USI.Z. 1998-08-31T17:48:50.93 10.0 undecidable manual PG 273 0.0057 0.52 1.3
--.GIB.Z. 1998-08-31T17:48:50.95 10.0 undecidable manual PG 178 0.0061 0.01 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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