Earthquake with magnitude of ML 0.7 on date 31-12-2010 and time 04:49:48 (Italy) in region 4 km S Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 4 km S Norcia (PG), on

  • 31-12-2010 03:49:48 (UTC)
  • 31-12-2010 04:49:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7620, 13.1000 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
Norcia PG 4 4957 4957
Cascia PG 9 3217 8174
Preci PG 14 724 8898
Accumoli RI 14 667 9565
Poggiodomo PG 15 117 9682
Castelsantangelo sul Nera MC 16 281 9963
Arquata del Tronto AP 16 1178 11141
Cerreto di Spoleto PG 16 1075 12216
Cittareale RI 17 482 12698
Monteleone di Spoleto PG 17 599 13297
Visso MC 19 1107 14404
Vallo di Nera PG 19 364 14768
Sellano PG 20 1079 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 Km W of Chieti (51815 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 1.5
ML 0.7
2010-12-31
03:49:48
42.762 13.1 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1155659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-31 03:49:48 ± 0.04
Latitude 42.7620 ± 0.0018
Longitude 13.1000 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1155659

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 447.2
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 10
Number of defining phases 8
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28149
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1155659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:25

Md:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1155659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHN. 2010-12-31T03:49:59.13 0.6 undecidable manual Sg 329 31.2465 0.025 48
IV.SMA1.EHZ. 2010-12-31T03:49:57.26 0.1 undecidable manual Sg 127 24.0537 0.063 97
IV.LNSS.HHN. 2010-12-31T03:49:55.49 0.1 undecidable manual Sg 195 18.3705 -0.02 99
IV.CESI.HHN. 2010-12-31T03:49:54.46 0.1 undecidable manual Pg 329 31.2465 -0.025 97
IV.SMA1.EHZ. 2010-12-31T03:49:53.27 0.1 undecidable manual Pg 127 24.0537 -0.114 96
IV.NRCA.HHZ. 2010-12-31T03:49:52.68 0.1 undecidable manual Sg 8 7.9809 -0.068 100
IV.LNSS.HHN. 2010-12-31T03:49:52.44 0.1 undecidable manual Pg 195 18.3705 0.031 99
IV.NRCA.HHZ. 2010-12-31T03:49:50.93 0.1 undecidable manual Pg 8 7.9809 0.115 99
IV.IMOL.EHE. 2010-12-31T03:49:34.65 10.0 undecidable manual Pg 0 0 0
CH.BERNI.HHZ. 2010-12-31T03:49:15.80 10.0 undecidable manual Pg 0 0 0
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