Earthquake with magnitude of Md 3.1 on date 20-10-1996 and time 02:57:21 (Italy) in region 4 km NE Borbona (RI)

A magnitude Md 3.1 earthquake occured in region: 4 km NE Borbona (RI), on

  • 20-10-1996 00:57:21 (UTC)
  • 20-10-1996 02:57:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.54, 13.16 at 6 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 4 617 617
Posta RI 6 694 1311
Montereale AQ 7 2581 3892
Cittareale RI 9 482 4374
Cagnano Amiterno AQ 10 1369 5743
Capitignano AQ 11 665 6408
Micigliano RI 13 127 6535
Barete AQ 14 737 7272
Amatrice RI 15 2657 9929
Antrodoco RI 15 2588 12517
Pizzoli AQ 16 4326 16843
Leonessa RI 17 2435 19278
Borgo Velino RI 17 972 20250
Campotosto AQ 17 542 20792
Accumoli RI 19 667 21459
Castel Sant'Angelo RI 19 1308 22767
Scoppito AQ 20 3727 26494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of L'Aquila (69753 inhabitants)
42 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
60 Km SE of Foligno (57155 inhabitants)
70 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
85 Km W of Chieti (51815 inhabitants)
87 Km W of Pescara (121014 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
100 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 3.1
ML-VAX 2.3
1996-10-20
00:57:21
42.54 13.16 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 254869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1996-10-20 00:57:21 ± 0.221
Latitude 42.54 ± 0.01
Longitude 13.16 ± 0.01
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 254869

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) 1486.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01481
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 254869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:01:10

ML:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 254869
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
--.FG2.Z. 1996-10-20T00:58:12.38 10.0 undecidable manual SN 115 0.0148 -0.47 0.4
--.FB9.Z. 1996-10-20T00:58:01.91 10.0 undecidable manual SN 346 0.0107 0.05 0.7
--.ARV.Z. 1996-10-20T00:57:56.14 10.0 undecidable manual SG 350 0.0087 0.18 0.7
--.SDI.Z. 1996-10-20T00:57:55.53 10.0 undecidable manual SG 149 0.0086 0.14 0.7
--.FG2.Z. 1996-10-20T00:57:52.20 10.0 undecidable manual PN 115 0.0148 0.69 0.6
--.RMP.Z. 1996-10-20T00:57:50.17 10.0 undecidable manual SG 205 0.0072 -0.28 0.7
--.RSM.Z. 1996-10-20T00:57:49.57 10.0 undecidable manual PN 339 0.0134 0.51 0.9
--.RFI.Z. 1996-10-20T00:57:48.65 10.0 undecidable manual PN 153 0.0124 1.05 0.2
--.ASS.Z. 1996-10-20T00:57:44.42 10.0 undecidable manual SG 324 0.0057 -0.98 0.1
--.FB9.Z. 1996-10-20T00:57:44.84 10.0 undecidable manual PN 346 0.0107 -0.15 1.6
--.ARV.Z. 1996-10-20T00:57:42.10 10.0 undecidable manual PG 350 0.0087 0.42 1.3
--.PQ9.Z. 1996-10-20T00:57:41.10 10.0 undecidable manual SG 161 0.0049 -1.14 0.1
--.SDI.Z. 1996-10-20T00:57:41.27 10.0 undecidable manual PG 149 0.0086 0.02 1.9
--.RMP.Z. 1996-10-20T00:57:38.78 10.0 undecidable manual PG 205 0.0072 0.38 1.5
--.MNS.Z. 1996-10-20T00:57:37.45 10.0 undecidable manual SG 247 0.0035 0.44 0.5
--.ASS.Z. 1996-10-20T00:57:34.55 10.0 undecidable manual PG 324 0.0057 -0.94 0.4
--.PQ9.Z. 1996-10-20T00:57:33.47 10.0 undecidable manual PG 161 0.0049 -0.14 1.9
--.AQU.Z. 1996-10-20T00:57:32.36 10.0 undecidable manual SG 136 0.0023 0.46 0.5
--.MNS.Z. 1996-10-20T00:57:30.71 10.0 positive manual PG 247 0.0035 0.07 3.8
--.AQU.Z. 1996-10-20T00:57:27.30 10.0 undecidable manual PG 136 0.0023 -0.39 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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