Earthquake with magnitude of Md 2.4 on date 25-10-1998 and time 06:00:04 (Italy) in region 10 km SW Valle Castellana (TE)

A magnitude Md 2.4 earthquake occured in region: 10 km SW Valle Castellana (TE), on

  • 25-10-1998 05:00:04 (UTC)
  • 25-10-1998 06:00:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.68, 13.4 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
Valle Castellana TE 10 977 977
Rocca Santa Maria TE 10 537 1514
Acquasanta Terme AP 10 2916 4430
Cortino TE 11 656 5086
Amatrice RI 11 2657 7743
Accumoli RI 13 667 8410
Campotosto AQ 14 542 8952
Arquata del Tronto AP 14 1178 10130
Crognaleto TE 16 1297 11427
Fano Adriano TE 18 296 11723
Capitignano AQ 19 665 12388
Montegallo AP 19 523 12911

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of Teramo (54892 inhabitants)
36 Km N of L'Aquila (69753 inhabitants)
63 Km E of Terni (111501 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
65 Km E of Foligno (57155 inhabitants)
71 Km W of Pescara (121014 inhabitants)
72 Km NW of Chieti (51815 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SE of Perugia (166134 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 2.4 1998-10-25
05:00:04
42.68 13.4 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 353999
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-10-25 05:00:04 ± 0.301
Latitude 42.68 ± 0.01
Longitude 13.40 ± 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 353999

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) 2455.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 210
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00599
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 353999
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:31:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SNTG.Z. 1998-10-25T05:00:28.37 10.0 undecidable manual SG 329 0.006 0.45 0.5
--.MNS.Z. 1998-10-25T05:00:25.86 10.0 undecidable manual SG 241 0.0054 -0.03 0.8
--.SNTG.Z. 1998-10-25T05:00:17.30 10.0 undecidable manual PG 329 0.006 -0.72 0.5
--.AQU.Z. 1998-10-25T05:00:17.45 10.0 undecidable manual SG 179 0.0028 0.68 0.3
--.MNS.Z. 1998-10-25T05:00:16.50 10.0 undecidable manual PG 241 0.0054 -0.35 1.5
--.NRCA.Z. 1998-10-25T05:00:15.36 10.0 undecidable manual SG 306 0.0023 0.45 0.5
--.AQU.Z. 1998-10-25T05:00:11.39 10.0 undecidable manual PG 179 0.0028 -0.2 2.1
--.NRCA.Z. 1998-10-25T05:00:10.80 10.0 undecidable manual PG 306 0.0023 0.29 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download