Earthquake with magnitude of Md 4.2 on date 21-06-1998 and time 14:59:04 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 4.2 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 21-06-1998 12:59:04 (UTC)
  • 21-06-1998 14:59:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.43, 12.79 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
51 Km NE of Trapani (68759 inhabitants)
61 Km NW of Palermo (674435 inhabitants)
74 Km NW of Bagheria (55387 inhabitants)
76 Km NE of Marsala (83194 inhabitants)
88 Km N of Mazara del Vallo (51718 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 4.2
ML-VAX 3.5
1998-06-21
12:59:04
38.43 12.79 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 343399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-06-21 12:59:04 ± 0.227
Latitude 38.43 ± 0.02
Longitude 12.79 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 343399

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) 2470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
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) 0.00372
Epicentral distance of station farthest from the epicenter (degree) 0.02712
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

Md:4.2

Field Value
Value 4.2
Uncertainty
Num. used stations 10
Type of magnitude Md
Reference to an origin 343399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:21:37

ML:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 343399
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
--.SC9.Z. 1998-06-21T13:00:11.10 10.0 undecidable manual SN 93 0.0206 0.02 0.6
--.ATN.Z. 1998-06-21T13:00:07.00 10.0 undecidable manual SN 96 0.019 0.34 0.5
--.MNO.Z. 1998-06-21T12:59:53.50 10.0 undecidable manual SN 107 0.0142 -0.39 0.5
--.TDS.Z. 1998-06-21T12:59:53.80 10.0 undecidable manual PN 64 0.0271 0.3 1.1
--.RFI.Z. 1998-06-21T12:59:53.80 10.0 undecidable manual PN 17 0.0271 0.37 1
--.SL9.Z. 1998-06-21T12:59:52.78 10.0 undecidable manual PN 47 0.0265 1.02 0.4
--.CI9.Z. 1998-06-21T12:59:51.93 10.0 undecidable manual PN 34 0.0268 -0.3 1.1
--.SGO.Z. 1998-06-21T12:59:50.78 10.0 undecidable manual PN 41 0.0259 -0.15 1.2
--.GRI.Z. 1998-06-21T12:59:50.40 10.0 undecidable manual PN 80 0.0257 -0.25 1.1
--.MGR.Z. 1998-06-21T12:59:47.95 10.0 undecidable manual PN 50 0.0246 -0.99 0.5
--.SOI.Z. 1998-06-21T12:59:47.11 10.0 undecidable manual PN 96 0.0232 0.22 1.3
--.CS9.Z. 1998-06-21T12:59:43.50 10.0 undecidable manual SN 115 0.01 0.01 0.6
--.AU9.Z. 1998-06-21T12:59:43.60 10.0 positive manual PN 120 0.0202 0.8 1.7
--.MO9.Z. 1998-06-21T12:59:43.76 10.0 undecidable manual PN 99 0.0209 0.54 1.1
--.PZI.Z. 1998-06-21T12:59:42.68 10.0 positive manual PN 128 0.0197 1.27 0.8
--.SC9.Z. 1998-06-21T12:59:41.99 10.0 undecidable manual PN 93 0.0206 -0.96 0.5
--.MEU.Z. 1998-06-21T12:59:41.14 10.0 positive manual PN 128 0.0187 1.2 0.9
--.MSI.Z. 1998-06-21T12:59:40.45 10.0 undecidable manual PN 94 0.0196 -0.86 0.6
--.ATN.Z. 1998-06-21T12:59:39.69 10.0 undecidable manual PN 96 0.019 -0.7 0.8
--.MNO.Z. 1998-06-21T12:59:33.28 10.0 undecidable manual PN 107 0.0142 0.27 1.4
--.CS9.Z. 1998-06-21T12:59:25.98 10.0 undecidable manual PN 115 0.01 -0.77 0.7
--.GIB.Z. 1998-06-21T12:59:25.33 10.0 positive manual PG 113 0.0096 -0.63 1.8
--.LVI.Z. 1998-06-21T12:59:16.39 10.0 undecidable manual PG 218 0.0051 -0.27 1.2
--.MPG.Z. 1998-06-21T12:59:15.00 10.0 undecidable manual PG 120 0.0046 -0.75 0.7
--.ERC.Z. 1998-06-21T12:59:13.85 10.0 negative manual PG 201 0.0037 -0.1 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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