Earthquake with magnitude of Md 2.3 on date 17-08-2002 and time 12:21:47 (Italy) in region 1 km SW Borgo Velino (RI)

A magnitude Md 2.3 earthquake occured in region: 1 km SW Borgo Velino (RI), on

  • 17-08-2002 10:21:47 (UTC)
  • 17-08-2002 12:21:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4, 13.05 at 5 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
Borgo Velino RI 1 972 972
Castel Sant'Angelo RI 2 1308 2280
Antrodoco RI 4 2588 4868
Micigliano RI 6 127 4995
Cittaducale RI 9 6828 11823
Concerviano RI 10 291 12114
Petrella Salto RI 11 1197 13311
Cantalice RI 15 2755 16066
Borbona RI 15 617 16683
Posta RI 15 694 17377
Longone Sabino RI 15 597 17974
Belmonte in Sabina RI 16 636 18610
Rieti RI 16 47698 66308
Fiamignano RI 16 1413 67721
Cagnano Amiterno AQ 16 1369 69090
Rocca Sinibalda RI 17 815 69905
Scoppito AQ 17 3727 73632
Varco Sabino RI 18 187 73819
Poggio Bustone RI 18 2055 75874
Marcetelli RI 19 89 75963
Leonessa RI 20 2435 78398
Barete AQ 20 737 79135

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km W of L'Aquila (69753 inhabitants)
38 Km E of Terni (111501 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
52 Km NE of Tivoli (56533 inhabitants)
61 Km W of Teramo (54892 inhabitants)
69 Km SE of Foligno (57155 inhabitants)
73 Km NE of Roma (2864731 inhabitants)
78 Km E of Viterbo (67173 inhabitants)
82 Km N of Velletri (53303 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km W of Chieti (51815 inhabitants)
93 Km NE of Pomezia (62966 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km SE of Perugia (166134 inhabitants)
97 Km NE of Fiumicino (78395 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 2002-08-17
10:21:47
42.4 13.05 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 447089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-08-17 10:21:47 ± 0.178
Latitude 42.40 ± 0.01
Longitude 13.05 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 447089

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) 1290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.00648
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 447089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:03:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 2002-08-17T10:22:13.91 10.0 undecidable manual SG 336 0.0065 -0.18 0.5
--.PTQR.Z. 2002-08-17T10:22:05.96 10.0 undecidable manual SG 145 0.004 0.61 0.1
--.NRCA.Z. 2002-08-17T10:22:04.98 10.0 undecidable manual SG 5 0.0039 0.14 0.7
--.ASS.Z. 2002-08-17T10:22:02.91 10.0 undecidable manual PG 336 0.0065 -0.11 1.5
--.MNS.Z. 2002-08-17T10:21:58.54 10.0 undecidable manual SG 267 0.0024 -0.04 0.8
--.PTQR.Z. 2002-08-17T10:21:57.49 10.0 undecidable manual PG 145 0.004 -0.48 0.4
--.NRCA.Z. 2002-08-17T10:21:57.66 10.0 undecidable manual PG 5 0.0039 -0.02 2
--.MNS.Z. 2002-08-17T10:21:54.15 10.0 undecidable manual PG 267 0.0024 0.09 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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