Earthquake with magnitude of Md 2.8 on date 17-01-1985 and time 08:26:28 (UTC) in region 4 km SW Stroncone (TR)

A magnitude Md 2.8 earthquake occured in region: 4 km SW Stroncone (TR), on

  • 17-01-1985 08:26:28 (UTC)
  • 17-01-1985 09:26:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.47, 12.65 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 4 4917 4917
Configni RI 5 633 5550
Cottanello RI 8 563 6113
Vacone RI 9 256 6369
Montasola RI 10 395 6764
Calvi dell'Umbria TR 10 1856 8620
Terni TR 10 111501 120121
Greccio RI 10 1558 121679
Colli sul Velino RI 12 533 122212
Contigliano RI 12 3783 125995
Narni TR 12 19785 145780
Montebuono RI 12 883 146663
Torri in Sabina RI 13 1256 147919
Tarano RI 13 1444 149363
Labro RI 14 374 149737
Otricoli TR 15 1869 151606
Casperia RI 15 1246 152852
Arrone TR 16 2763 155615
Morro Reatino RI 17 373 155988
Selci RI 17 1106 157094
Collevecchio RI 17 1577 158671
Roccantica RI 17 563 159234
Montefranco TR 17 1276 160510
Cantalupo in Sabina RI 18 1685 162195
Rivodutri RI 18 1253 163448
Magliano Sabina RI 18 3774 167222
San Gemini TR 18 5018 172240
Monte San Giovanni in Sabina RI 19 714 172954
Rieti RI 19 47698 220652
Forano RI 20 3179 223831
Poggio Catino RI 20 1341 225172

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Terni (111501 inhabitants)
45 Km E of Viterbo (67173 inhabitants)
53 Km N of Guidonia Montecelio (88673 inhabitants)
54 Km S of Foligno (57155 inhabitants)
58 Km N of Tivoli (56533 inhabitants)
63 Km W of L'Aquila (69753 inhabitants)
65 Km N of Roma (2864731 inhabitants)
74 Km S of Perugia (166134 inhabitants)
82 Km NE of Civitavecchia (52991 inhabitants)
85 Km NE of Fiumicino (78395 inhabitants)
88 Km N of Velletri (53303 inhabitants)
89 Km W of Teramo (54892 inhabitants)
90 Km N of Pomezia (62966 inhabitants)
97 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
Bulletin
Rev1000
Md 2.8 1985-01-17
08:26:28
42.47 12.65 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 569
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-01-17 08:26:28 ± 0.608
Latitude 42.47 ± 0.03
Longitude 12.65 ± 0.20
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 569

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) 16993.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
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) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.01028
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:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 569
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:05:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SD1.Z. 1985-01-17T08:26:51.50 10.0 undecidable manual PN 130 0.0103 1.13 0.5
--.AS1.Z. 1985-01-17T08:26:50.00 10.0 undecidable manual SG 0 0.0053 0.55 0.5
--.RMP.Z. 1985-01-17T08:26:43.00 10.0 undecidable manual PG 176 0.0059 1.15 0.7
--.AS1.Z. 1985-01-17T08:26:40.00 10.0 undecidable manual PG 0 0.0053 -0.61 1.3
--.MNS.Z. 1985-01-17T08:26:32.50 10.0 undecidable manual SG 163 0.0007 -0.89 0.6
--.MNS.Z. 1985-01-17T08:26:30.50 10.0 undecidable manual PG 163 0.0007 -0.83 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download