Earthquake with magnitude of Md 2.1 on date 18-01-1992 and time 00:59:12 (Italy) in region 2 km SW Polino (TR)

A magnitude Md 2.1 earthquake occured in region: 2 km SW Polino (TR), on

  • 17-01-1992 23:59:12 (UTC)
  • 18-01-1992 00:59:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5700, 12.8310 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
Polino TR 2 233 233
Morro Reatino RI 5 373 606
Arrone TR 5 2763 3369
Labro RI 5 374 3743
Montefranco TR 6 1276 5019
Rivodutri RI 6 1253 6272
Ferentillo TR 7 1913 8185
Poggio Bustone RI 9 2055 10240
Colli sul Velino RI 9 533 10773
Leonessa RI 11 2435 13208
Cantalice RI 13 2755 15963
Monteleone di Spoleto PG 14 599 16562
Greccio RI 14 1558 18120
Terni TR 15 111501 129621
Stroncone TR 16 4917 134538
Scheggino PG 16 461 134999
Poggiodomo PG 18 117 135116
Sant'Anatolia di Narco PG 18 564 135680
Contigliano RI 18 3783 139463
Rieti RI 18 47698 187161
Spoleto PG 20 38218 225379

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Terni (111501 inhabitants)
44 Km S of Foligno (57155 inhabitants)
53 Km W of L'Aquila (69753 inhabitants)
62 Km E of Viterbo (67173 inhabitants)
64 Km N of Guidonia Montecelio (88673 inhabitants)
67 Km N of Tivoli (56533 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
72 Km W of Teramo (54892 inhabitants)
80 Km NE of Roma (2864731 inhabitants)
98 Km N 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
Bulletin
Rev1000
Md 2.1
ML-VAX 1.5
1992-01-17
23:59:12
42.57 12.831 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 157009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1992-01-17 23:59:12 ± 0.284
Latitude 42.5700 ± 0.0132
Longitude 12.8310 ± 0.0425
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 157009

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) 3778.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.01012
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 157009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:26:39

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 157009
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(km) Takeoff_angle Residual Weight
--.ARV.Z. 1992-01-17T23:59:44.85 10.0 undecidable manual SG 4 0.9213 -0.57 0.5
--.SDI.Z. 1992-01-17T23:59:36.20 10.0 undecidable manual PN 139 1.1211 1.08 0.6
--.ASS.Z. 1992-01-17T23:59:33.00 10.0 undecidable manual SG 345 0.4995 1.15 0.2
--.ARV.Z. 1992-01-17T23:59:31.30 10.0 undecidable manual PG 4 0.9213 -0.54 1.2
--.ASS.Z. 1992-01-17T23:59:24.00 10.0 undecidable manual PG 345 0.4995 0.27 2.2
--.AQU.Z. 1992-01-17T23:59:22.40 10.0 undecidable manual PG? 116 0.4662 -0.68 0.4
--.MNS.Z. 1992-01-17T23:59:21.60 10.0 undecidable manual SG 210 0.2109 -0.09 0.9
--.MNS.Z. 1992-01-17T23:59:17.42 10.0 undecidable manual PG 210 0.2109 -0.13 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download