Earthquake with magnitude of Md 2.5 on date 08-08-1999 and time 07:51:19 (Italy) in region 2 km NE Borbona (RI)

A magnitude Md 2.5 earthquake occured in region: 2 km NE Borbona (RI), on

  • 08-08-1999 05:51:19 (UTC)
  • 08-08-1999 07:51:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.53, 13.14 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
Borbona RI 2 617 617
Posta RI 4 694 1311
Montereale AQ 8 2581 3892
Cittareale RI 10 482 4374
Cagnano Amiterno AQ 11 1369 5743
Micigliano RI 12 127 5870
Capitignano AQ 13 665 6535
Antrodoco RI 14 2588 9123
Barete AQ 15 737 9860
Leonessa RI 15 2435 12295
Borgo Velino RI 16 972 13267
Amatrice RI 16 2657 15924
Pizzoli AQ 16 4326 20250
Castel Sant'Angelo RI 18 1308 21558
Campotosto AQ 19 542 22100
Accumoli RI 20 667 22767

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
41 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
69 Km NE of Tivoli (56533 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
86 Km W of Chieti (51815 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km SE of Perugia (166134 inhabitants)
90 Km NE of Roma (2864731 inhabitants)
99 Km NE of Velletri (53303 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 2.5 1999-08-08
05:51:19
42.53 13.14 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 371759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-08-08 05:51:19 ± 0.117
Latitude 42.53 ± 0.01
Longitude 13.14 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 371759

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) 1264.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00235
Epicentral distance of station farthest from the epicenter (degree) 0.00874
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 371759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:48:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ARV.Z. 1999-08-08T05:51:53.33 10.0 undecidable manual SG 351 0.0087 0.31 0.3
--.SNTG.Z. 1999-08-08T05:51:45.76 10.0 undecidable manual SG 348 0.0066 0.44 0.2
--.ASS.Z. 1999-08-08T05:51:42.42 10.0 undecidable manual SG 326 0.0057 0.19 0.5
--.ARV.Z. 1999-08-08T05:51:39.00 10.0 undecidable manual PG 351 0.0087 0.04 1.3
--.PQ9.Z. 1999-08-08T05:51:38.47 10.0 undecidable manual SG 159 0.0049 -0.68 0.1
--.SNTG.Z. 1999-08-08T05:51:34.19 10.0 undecidable manual PG 348 0.0066 -0.33 0.8
--.MNS.Z. 1999-08-08T05:51:33.00 10.0 undecidable manual SG 246 0.0033 -0.61 0.1
--.ASS.Z. 1999-08-08T05:51:32.62 10.0 undecidable manual PG 326 0.0057 -0.11 1.5
--.NRCA.Z. 1999-08-08T05:51:31.24 10.0 undecidable manual SG 355 0.0027 -0.1 0.7
--.PQ9.Z. 1999-08-08T05:51:31.52 10.0 undecidable manual PG 159 0.0049 0.57 0.3
--.AQU.Z. 1999-08-08T05:51:29.61 10.0 undecidable manual SG 133 0.0023 -0.44 0.2
--.MNS.Z. 1999-08-08T05:51:27.90 10.0 positive manual PG 246 0.0033 0.15 3.1
--.NRCA.Z. 1999-08-08T05:51:26.32 10.0 positive manual PG 355 0.0027 -0.13 3.2
--.AQU.Z. 1999-08-08T05:51:25.84 10.0 undecidable manual PG 133 0.0023 0.14 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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