Earthquake with magnitude of Md 2.4 on date 23-01-2002 and time 22:30:55 (Italy) in region 1 km E Valle Castellana (TE)

A magnitude Md 2.4 earthquake occured in region: 1 km E Valle Castellana (TE), on

  • 23-01-2002 21:30:55 (UTC)
  • 23-01-2002 22:30:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.74, 13.5 at 6 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 1 977 977
Rocca Santa Maria TE 6 537 1514
Acquasanta Terme AP 9 2916 4430
Cortino TE 13 656 5086
Civitella del Tronto TE 14 5116 10202
Roccafluvione AP 14 2010 12212
Folignano AP 14 9241 21453
Ascoli Piceno AP 14 49407 70860
Campli TE 15 7209 78069
Torricella Sicura TE 15 2641 80710
Venarotta AP 16 2066 82776
Arquata del Tronto AP 17 1178 83954
Maltignano AP 18 2401 86355
Montegallo AP 18 523 86878
Palmiano AP 19 196 87074
Teramo TE 19 54892 141966
Montorio al Vomano TE 20 8218 150184

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Teramo (54892 inhabitants)
44 Km N of L'Aquila (69753 inhabitants)
58 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
69 Km NW of Chieti (51815 inhabitants)
70 Km E of Foligno (57155 inhabitants)
73 Km E of Terni (111501 inhabitants)
98 Km S of Ancona (100861 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 2002-01-23
21:30:55
42.74 13.51 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 435199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-01-23 21:30:55 ± 0.458
Latitude 42.74 ± 0.02
Longitude 13.51 ± 0.04
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 435199

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) 3684.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 188
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.0106
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 435199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:51:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FSSB.Z. 2002-01-23T21:31:33.67 10.0 undecidable manual SN 330 0.0098 0.95 0.1
--.ARV.Z. 2002-01-23T21:31:26.68 10.0 undecidable manual SG 331 0.0078 1.06 0.1
--.ASS.Z. 2002-01-23T21:31:20.17 10.0 undecidable manual SG 297 0.0063 -0.29 0.6
--.SNTG.Z. 2002-01-23T21:31:19.82 10.0 undecidable manual SG 321 0.0059 0.7 0.3
--.RVI2.Z. 2002-01-23T21:31:18.43 10.0 undecidable manual PN 160 0.0106 0.37 1.1
--.FSSB.Z. 2002-01-23T21:31:16.65 10.0 undecidable manual PN 330 0.0098 -0.21 1.4
--.ARV.Z. 2002-01-23T21:31:12.68 10.0 undecidable manual PG 331 0.0078 -0.09 1.7
--.AQU.Z. 2002-01-23T21:31:11.31 10.0 undecidable manual SG 190 0.0035 0.95 0.1
--.ASS.Z. 2002-01-23T21:31:09.25 10.0 undecidable manual PG 297 0.0063 -0.53 1.1
--.SNTG.Z. 2002-01-23T21:31:08.43 10.0 undecidable manual PG 321 0.0059 -0.58 1
--.MNS.Z. 2002-01-23T21:31:08.99 10.0 undecidable manual PG 239 0.0062 -0.74 0.7
--.NRCA.Z. 2002-01-23T21:31:07.90 10.0 undecidable manual SG 288 0.0027 0.84 0.2
--.AQU.Z. 2002-01-23T21:31:04.20 10.0 undecidable manual PG 190 0.0035 0.06 1.9
--.NRCA.Z. 2002-01-23T21:31:02.11 10.0 positive manual PG 288 0.0027 0.05 3.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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