Earthquake with magnitude of Md 2.3 on date 31-01-2002 and time 10:58:08 (Italy) in region 2 km W Monteleone di Spoleto (PG)

A magnitude Md 2.3 earthquake occured in region: 2 km W Monteleone di Spoleto (PG), on

  • 31-01-2002 09:58:08 (UTC)
  • 31-01-2002 10:58:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.65, 12.93 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
Monteleone di Spoleto PG 2 599 599
Poggiodomo PG 7 117 716
Leonessa RI 10 2435 3151
Cascia PG 10 3217 6368
Polino TR 10 233 6601
Scheggino PG 11 461 7062
Ferentillo TR 12 1913 8975
Sant'Anatolia di Narco PG 12 564 9539
Vallo di Nera PG 15 364 9903
Montefranco TR 15 1276 11179
Arrone TR 15 2763 13942
Morro Reatino RI 16 373 14315
Rivodutri RI 16 1253 15568
Poggio Bustone RI 17 2055 17623
Labro RI 18 374 17997
Spoleto PG 19 38218 56215
Cittareale RI 19 482 56697
Cerreto di Spoleto PG 19 1075 57772
Posta RI 19 694 58466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Terni (111501 inhabitants)
39 Km SE of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
63 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
74 Km N of Guidonia Montecelio (88673 inhabitants)
77 Km N of Tivoli (56533 inhabitants)
92 Km NE of Roma (2864731 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 2.3 2002-01-31
09:58:08
42.65 12.93 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 435619
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-01-31 09:58:08 ± 0.201
Latitude 42.65 ± 0.01
Longitude 12.93 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 435619

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) 2332.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
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) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.00639
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 435619
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:51:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.ASS.Z. 2002-01-31T09:58:26.90 10.0 undecidable manual SG 333 0.0041 0.67 0.3
--.PTQR.Z. 2002-01-31T09:58:24.26 10.0 undecidable manual PG 151 0.0064 0.76 0.5
--.MNS.Z. 2002-01-31T09:58:21.90 10.0 undecidable manual SG 215 0.0029 -0.09 0.7
--.SNTG.Z. 2002-01-31T09:58:20.94 10.0 undecidable manual PG 0 0.0054 -0.48 1
--.ASS.Z. 2002-01-31T09:58:19.15 10.0 undecidable manual PG 333 0.0041 0.38 1.3
--.NRCA.Z. 2002-01-31T09:58:17.58 10.0 undecidable manual SG 35 0.002 0.17 0.7
--.MNS.Z. 2002-01-31T09:58:15.22 10.0 undecidable manual PG 215 0.0029 -0.63 0.9
--.NRCA.Z. 2002-01-31T09:58:13.26 10.0 positive manual PG 35 0.002 -0.41 2.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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