Earthquake with magnitude of Md 2.3 on date 13-12-1998 and time 10:09:03 (Italy) in region 7 km NE L'Aquila (AQ)

A magnitude Md 2.3 earthquake occured in region: 7 km NE L'Aquila (AQ), on

  • 13-12-1998 09:09:03 (UTC)
  • 13-12-1998 10:09:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.41, 13.44 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
L'Aquila AQ 7 69753 69753
Pizzoli AQ 12 4326 74079
Poggio Picenze AQ 13 1136 75215
Fossa AQ 14 721 75936
Barete AQ 14 737 76673
Ocre AQ 14 1167 77840
Sant'Eusanio Forconese AQ 15 394 78234
Scoppito AQ 15 3727 81961
Lucoli AQ 16 1011 82972
Barisciano AQ 16 1828 84800
Crognaleto TE 16 1297 86097
Pietracamela TE 16 271 86368
Capitignano AQ 17 665 87033
San Demetrio ne' Vestini AQ 17 1854 88887
Tornimparte AQ 17 3187 92074
Campotosto AQ 17 542 92616
Villa Sant'Angelo AQ 18 424 93040
Fano Adriano TE 18 296 93336
Cagnano Amiterno AQ 18 1369 94705
Santo Stefano di Sessanio AQ 19 111 94816
Rocca di Cambio AQ 20 533 95349

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NE of L'Aquila (69753 inhabitants)
35 Km SW of Teramo (54892 inhabitants)
60 Km W of Montesilvano (53738 inhabitants)
60 Km W of Chieti (51815 inhabitants)
64 Km W of Pescara (121014 inhabitants)
67 Km E of Terni (111501 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km SE of Foligno (57155 inhabitants)
97 Km NE of Velletri (53303 inhabitants)
97 Km NE of Roma (2864731 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 2.3 1998-12-13
09:09:03
42.41 13.44 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 356329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-12-13 09:09:03 ± 0.412
Latitude 42.41 ± 0.02
Longitude 13.44 ± 0.04
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 356329

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) 4008.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 234
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) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00672
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 356329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:34:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SDI.Z. 1998-12-13T09:09:29.64 10.0 undecidable manual SG 158 0.0067 -0.04 0.7
--.MNS.Z. 1998-12-13T09:09:22.71 10.0 undecidable manual SG 267 0.005 -0.74 0.2
--.SDI.Z. 1998-12-13T09:09:21.30 10.0 undecidable manual PG! 158 0.0067 2.82 0
--.NRCA.Z. 1998-12-13T09:09:21.94 10.0 undecidable manual SG 330 0.0043 0.85 0.2
--.MNS.Z. 1998-12-13T09:09:15.43 10.0 undecidable manual PG 267 0.005 0.54 1.1
--.NRCA.Z. 1998-12-13T09:09:12.87 10.0 undecidable manual PG 330 0.0043 -0.65 0.9
--.AQU.Z. 1998-12-13T09:09:06.43 10.0 undecidable manual SG 205 0.0005 -0.38 0.6
--.AQU.Z. 1998-12-13T09:09:05.39 10.0 negative manual PG 205 0.0005 0.11 4.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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