Earthquake with magnitude of Md 2.0 on date 18-07-1999 and time 18:16:28 (Italy) in region 8 km SE Antrodoco (RI)

A magnitude Md 2.0 earthquake occured in region: 8 km SE Antrodoco (RI), on

  • 18-07-1999 16:16:28 (UTC)
  • 18-07-1999 18:16:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.36, 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
Antrodoco RI 8 2588 2588
Borgo Velino RI 8 972 3560
Castel Sant'Angelo RI 9 1308 4868
Petrella Salto RI 10 1197 6065
Scoppito AQ 10 3727 9792
Fiamignano RI 11 1413 11205
Micigliano RI 12 127 11332
Cagnano Amiterno AQ 13 1369 12701
Concerviano RI 13 291 12992
Pizzoli AQ 15 4326 17318
Barete AQ 15 737 18055
Cittaducale RI 16 6828 24883
Tornimparte AQ 16 3187 28070
Borbona RI 17 617 28687
Varco Sabino RI 17 187 28874
Marcetelli RI 17 89 28963
Longone Sabino RI 17 597 29560
Pescorocchiano RI 18 2075 31635
Posta RI 18 694 32329
Lucoli AQ 18 1011 33340
Montereale AQ 20 2581 35921

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km W of L'Aquila (69753 inhabitants)
46 Km E of Terni (111501 inhabitants)
53 Km NE of Tivoli (56533 inhabitants)
53 Km NE of Guidonia Montecelio (88673 inhabitants)
57 Km SW of Teramo (54892 inhabitants)
75 Km SE of Foligno (57155 inhabitants)
75 Km NE of Roma (2864731 inhabitants)
81 Km NE of Velletri (53303 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
89 Km W of Pescara (121014 inhabitants)
93 Km NE of Pomezia (62966 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
99 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 2.0 1999-07-18
16:16:28
42.37 13.14 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 370669
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1999-07-18 16:16:28 ± 0.087
Latitude 42.37 ± 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 370669

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) 963.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.0017
Epicentral distance of station farthest from the epicenter (degree) 0.00704
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

Field Value
Value 2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 370669
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:47:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.NRCA.Z. 1999-07-18T16:16:46.12 10.0 undecidable manual SG 357 0.0042 0.34 0.1
--.ASS.Z. 1999-07-18T16:16:44.26 10.0 undecidable manual PG 333 0.007 -0.18 0.7
--.MNS.Z. 1999-07-18T16:16:41.45 10.0 undecidable manual SG 273 0.003 -0.16 0.5
--.NRCA.Z. 1999-07-18T16:16:38.54 10.0 undecidable manual PG 357 0.0042 -0.08 1.7
--.AQU.Z. 1999-07-18T16:16:37.60 10.0 undecidable manual SG 93 0.0017 0.04 0.8
--.MNS.Z. 1999-07-18T16:16:36.40 10.0 undecidable manual PG 273 0.003 0.19 1
--.AQU.Z. 1999-07-18T16:16:33.54 10.0 undecidable manual PG 93 0.0017 -0.02 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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