Earthquake with magnitude of Md 3.0 on date 07-04-1985 and time 09:59:04 (UTC) in region 3 km SW Stroncone (TR)

A magnitude Md 3.0 earthquake occured in region: 3 km SW Stroncone (TR), on

  • 07-04-1985 09:59:04 (UTC)
  • 07-04-1985 11:59:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.48, 12.64 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
Stroncone TR 3 4917 4917
Configni RI 6 633 5550
Cottanello RI 9 563 6113
Terni TR 9 111501 117614
Vacone RI 10 256 117870
Calvi dell'Umbria TR 10 1856 119726
Montasola RI 11 395 120121
Narni TR 11 19785 139906
Greccio RI 11 1558 141464
Colli sul Velino RI 12 533 141997
Montebuono RI 13 883 142880
Contigliano RI 13 3783 146663
Torri in Sabina RI 14 1256 147919
Tarano RI 14 1444 149363
Otricoli TR 14 1869 151232
Labro RI 15 374 151606
Casperia RI 16 1246 152852
Arrone TR 16 2763 155615
San Gemini TR 17 5018 160633
Morro Reatino RI 17 373 161006
Montefranco TR 17 1276 162282
Collevecchio RI 17 1577 163859
Selci RI 18 1106 164965
Roccantica RI 18 563 165528
Magliano Sabina RI 18 3774 169302
Rivodutri RI 19 1253 170555
Cantalupo in Sabina RI 19 1685 172240

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km S of Terni (111501 inhabitants)
44 Km E of Viterbo (67173 inhabitants)
54 Km S of Foligno (57155 inhabitants)
54 Km N of Guidonia Montecelio (88673 inhabitants)
59 Km N of Tivoli (56533 inhabitants)
64 Km W of L'Aquila (69753 inhabitants)
66 Km N of Roma (2864731 inhabitants)
73 Km S of Perugia (166134 inhabitants)
82 Km NE of Civitavecchia (52991 inhabitants)
85 Km NE of Fiumicino (78395 inhabitants)
89 Km N of Velletri (53303 inhabitants)
90 Km W of Teramo (54892 inhabitants)
90 Km N of Pomezia (62966 inhabitants)
98 Km N 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 3.0 1985-04-07
09:59:04
42.48 12.64 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 4309
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-07 09:59:04 ± 0.255
Latitude 42.48 ± 0.01
Longitude 12.64 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4309

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) 2933.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.03699
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 8
Type of magnitude Md
Reference to an origin 4309
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:08:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FO1.Z. 1985-04-07T10:00:08.00 10.0 undecidable manual PN 1 0.037 1.24 0.3
--.CTI.Z. 1985-04-07T10:00:01.00 10.0 undecidable manual PN 349 0.0327 0.8 0.5
--.CH1.Z. 1985-04-07T09:59:45.00 10.0 undecidable manual SN 336 0.0113 0.47 0.5
--.SD1.Z. 1985-04-07T09:59:43.50 10.0 undecidable manual SN 131 0.0104 1.19 0.3
--.AR1.Z. 1985-04-07T09:59:39.50 10.0 undecidable manual SN 12 0.0094 -0.02 0.6
--.RDP.Z. 1985-04-07T09:59:31.00 10.0 undecidable manual SG 175 0.0065 1.68 0.2
--.PRG.Z. 1985-04-07T09:59:28.00 10.0 undecidable manual SG 344 0.0057 1.09 0.5
--.CH1.Z. 1985-04-07T09:59:27.00 10.0 undecidable manual PN 336 0.0113 -0.49 1.1
--.AQU.Z. 1985-04-07T09:59:26.50 10.0 undecidable manual SG 102 0.0052 1.81 0.1
--.SD1.Z. 1985-04-07T09:59:26.50 10.0 undecidable manual PN 131 0.0104 0.29 1.3
--.AS1.Z. 1985-04-07T09:59:26.00 10.0 undecidable manual SG 1 0.0052 1.12 0.5
--.AR1.Z. 1985-04-07T09:59:23.50 10.0 undecidable manual PN 12 0.0094 -1.11 0.8
--.ALP.Z. 1985-04-07T09:59:19.00 10.0 undecidable manual PG 65 0.0067 -0.18 2.9
--.PRG.Z. 1985-04-07T09:59:18.00 10.0 undecidable manual PG 344 0.0057 0.67 2.3
--.RMP.Z. 1985-04-07T09:59:18.00 10.0 positive manual PG 175 0.006 0.28 2.8
--.RDP.Z. 1985-04-07T09:59:17.50 10.0 positive manual PG 175 0.0065 -1.21 1.4
--.AQU.Z. 1985-04-07T09:59:16.00 10.0 undecidable manual PG 102 0.0052 -0.04 1.5
--.AS1.Z. 1985-04-07T09:59:15.00 10.0 undecidable manual PG 1 0.0052 -1.15 1.5
--.PO9.Z. 1985-04-07T09:59:13.50 10.0 undecidable manual SG 66 0.0022 -0.47 0.5
--.MNS.Z. 1985-04-07T09:59:09.50 10.0 undecidable manual SG 161 0.0008 0.13 0.6
--.PO9.Z. 1985-04-07T09:59:08.50 10.0 positive manual PG 66 0.0022 -1.36 1.1
--.MNS.Z. 1985-04-07T09:59:05.70 10.0 positive manual PG 161 0.0008 -1.5 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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