Earthquake with magnitude of Md 2.3 on date 07-07-2001 and time 05:47:25 (Italy) in region 5 km SW Norcia (PG)

A magnitude Md 2.3 earthquake occured in region: 5 km SW Norcia (PG), on

  • 07-07-2001 03:47:25 (UTC)
  • 07-07-2001 05:47:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7530, 13.0600 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
Cascia PG 5 3217 3217
Norcia PG 5 4957 8174
Poggiodomo PG 11 117 8291
Cerreto di Spoleto PG 14 1075 9366
Monteleone di Spoleto PG 14 599 9965
Preci PG 14 724 10689
Vallo di Nera PG 16 364 11053
Accumoli RI 17 667 11720
Cittareale RI 17 482 12202
Castelsantangelo sul Nera MC 18 281 12483
Sant'Anatolia di Narco PG 18 564 13047
Sellano PG 19 1079 14126
Scheggino PG 19 461 14587
Arquata del Tronto AP 20 1178 15765
Visso MC 20 1107 16872

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
54 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km W of Pescara (121014 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 2.3 2001-07-07
03:47:25
42.753 13.06 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 422139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2001-07-07 03:47:25 ± 0.101
Latitude 42.7530 ± 0.0061
Longitude 13.0600 ± 0.0129
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 422139

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) 1254.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.00672
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 422139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:38:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 2001-07-07T03:47:51.86 10.0 undecidable manual SG 353 0.7437 0.32 0.1
--.SNTG.Z. 2001-07-07T03:47:44.39 10.0 undecidable manual SG 350 0.4995 0.55 0
--.MNS.Z. 2001-07-07T03:47:42.60 10.0 undecidable manual SG 217 0.4551 0.31 0.2
--.AQU.Z. 2001-07-07T03:47:42.47 10.0 undecidable manual SG 147 0.4662 -0.14 0.5
--.ASS.Z. 2001-07-07T03:47:41.36 10.0 undecidable manual SG 316 0.4218 0.09 0.6
--.ARV.Z. 2001-07-07T03:47:40.20 10.0 undecidable manual PG 353 0.7437 -0.36 0.3
--.AQU.Z. 2001-07-07T03:47:35.49 10.0 undecidable manual PG 147 0.4662 0.09 1.4
--.SNTG.Z. 2001-07-07T03:47:35.87 10.0 undecidable manual PG 350 0.4995 -0.24 0.8
--.MNS.Z. 2001-07-07T03:47:35.13 10.0 undecidable manual PG 217 0.4551 -0.09 1.5
--.ASS.Z. 2001-07-07T03:47:34.56 10.0 positive manual PG 316 0.4218 -0.07 3
--.NRCA.Z. 2001-07-07T03:47:30.45 10.0 undecidable manual SG 25 0.0777 -0.02 0.6
--.NRCA.Z. 2001-07-07T03:47:28.47 10.0 positive manual PG 25 0.0777 0.08 3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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