Earthquake with magnitude of Md 2.3 on date 23-07-1999 and time 05:16:07 (Italy) in region 2 km SW Scoppito (AQ)

A magnitude Md 2.3 earthquake occured in region: 2 km SW Scoppito (AQ), on

  • 23-07-1999 03:16:07 (UTC)
  • 23-07-1999 05:16:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.36, 13.25 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
Scoppito AQ 2 3727 3727
Tornimparte AQ 9 3187 6914
Pizzoli AQ 10 4326 11240
Lucoli AQ 11 1011 12251
Barete AQ 11 737 12988
Cagnano Amiterno AQ 11 1369 14357
L'Aquila AQ 13 69753 84110
Fiamignano RI 14 1413 85523
Antrodoco RI 15 2588 88111
Petrella Salto RI 16 1197 89308
Borgo Velino RI 16 972 90280
Castel Sant'Angelo RI 18 1308 91588
Borgorose RI 18 4591 96179
Montereale AQ 19 2581 98760
Capitignano AQ 19 665 99425
Pescorocchiano RI 19 2075 101500
Micigliano RI 19 127 101627
Borbona RI 20 617 102244

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km W of L'Aquila (69753 inhabitants)
50 Km SW of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
57 Km NE of Tivoli (56533 inhabitants)
59 Km NE of Guidonia Montecelio (88673 inhabitants)
76 Km W of Chieti (51815 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
80 Km SE of Foligno (57155 inhabitants)
80 Km W of Pescara (121014 inhabitants)
81 Km NE of Roma (2864731 inhabitants)
84 Km NE of Velletri (53303 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
98 Km NE of Pomezia (62966 inhabitants)
98 Km NE of Aprilia (73446 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
ML-VAX 1.7
1999-07-23
03:16:07
42.36 13.25 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 370939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-07-23 03:16:07 ± 0.162
Latitude 42.36 ± 0.01
Longitude 13.25 ± 0.02
Depth (km) 10 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 370939

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) 1602.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00737
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 370939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:48:04

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 370939
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
--.NRCA.Z. 1999-07-23T03:16:24.69 10.0 undecidable manual SG 348 0.0043 -0.23 0.7
--.ASS.Z. 1999-07-23T03:16:23.89 10.0 undecidable manual PG 328 0.0074 -0.01 1.5
--.SDI.Z. 1999-07-23T03:16:23.35 10.0 undecidable manual PG 147 0.0069 0.44 0.7
--.MNS.Z. 1999-07-23T03:16:23.11 10.0 undecidable manual SG 273 0.0037 0.26 0.6
--.PQ9.Z. 1999-07-23T03:16:20.70 10.0 undecidable manual SG 161 0.0032 -0.73 0.1
--.NRCA.Z. 1999-07-23T03:16:17.21 10.0 undecidable manual PG 348 0.0043 -0.34 1.3
--.MNS.Z. 1999-07-23T03:16:16.38 10.0 undecidable manual PG 273 0.0037 0.03 2.2
--.PQ9.Z. 1999-07-23T03:16:14.79 10.0 undecidable manual PG 161 0.0032 -0.38 1.2
--.AQU.Z. 1999-07-23T03:16:12.90 10.0 undecidable manual SG 92 0.001 -0.22 0.7
--.AQU.Z. 1999-07-23T03:16:11.12 10.0 undecidable manual PG 92 0.001 0.39 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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