Earthquake with magnitude of ML 0.7 on date 31-12-2010 and time 01:56:27 (Italy) in region 2 km SE Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 2 km SE Norcia (PG), on

  • 31-12-2010 00:56:27 (UTC)
  • 31-12-2010 01:56:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 13.1120 at 8 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 2 4957 4957
Cascia PG 10 3217 8174
Preci PG 13 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Accumoli RI 15 667 9846
Arquata del Tronto AP 15 1178 11024
Poggiodomo PG 16 117 11141
Cerreto di Spoleto PG 17 1075 12216
Visso MC 17 1107 13323
Cittareale RI 18 482 13805
Ussita MC 19 444 14249
Monteleone di Spoleto PG 19 599 14848
Sellano PG 19 1079 15927
Montegallo AP 20 523 16450

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 Km W of Chieti (51815 inhabitants)
99 Km SW of Ancona (100861 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 1.7
ML 0.7
2010-12-31
00:56:27
42.779 13.112 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1155559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-31 00:56:27 ± 0.28
Latitude 42.7790 ± 0.0054
Longitude 13.1120 ± 0.0086
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1155559

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 664
Semi-minor axis of confidence ellipse (meter) 558
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 922.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.22123
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1155559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:17

Md:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1155559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:29:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2010-12-31T00:56:36.88 0.3 undecidable manual Sg 132 24.5532 0.115 72
IV.LNSS.HHE. 2010-12-31T00:56:35.41 0.3 undecidable manual Sg 197 20.3685 -0.001 74
IV.LNSS.HHE. 2010-12-31T00:56:32.19 0.1 undecidable manual Pg 197 20.3685 0.001 99
IV.SMA1.EHZ. 2010-12-31T00:56:32.82 0.1 undecidable manual Pg 132 24.5532 -0.15 96
IV.NRCA.HHE. 2010-12-31T00:56:31.22 0.1 undecidable manual Sg 2 5.994 -0.082 100
IV.NRCA.HHE. 2010-12-31T00:56:29.96 0.1 undecidable manual Pg 2 5.994 0.144 99
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download