Earthquake with magnitude of ML 0.7 on date 21-12-2010 and time 23:18:32 (Italy) in region 10 km S Pietralunga (PG)

A magnitude ML 0.7 earthquake occured in region: 10 km S Pietralunga (PG), on

  • 21-12-2010 22:18:32 (UTC)
  • 21-12-2010 23:18:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3590, 12.4590 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
Pietralunga PG 10 2111 2111
Gubbio PG 10 32216 34327
Montone PG 11 1680 36007
Umbertide PG 12 16681 52688
Scheggia e Pascelupo PG 18 1393 54081
Cantiano PU 19 2245 56326

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
49 Km NW of Foligno (57155 inhabitants)
70 Km SW of Fano (60888 inhabitants)
72 Km SW of Pesaro (94582 inhabitants)
79 Km S of Rimini (147750 inhabitants)
88 Km S of Cesena (96758 inhabitants)
90 Km N of Terni (111501 inhabitants)
90 Km W of Ancona (100861 inhabitants)
91 Km E of Siena (53903 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 1.2
ML 0.7
2010-12-21
22:18:32
43.359 12.459 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1153229
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-21 22:18:32 ± 0.24
Latitude 43.3590 ± 0.0063
Longitude 12.4590 ± 0.0210
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1153229

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1677
Semi-minor axis of confidence ellipse (meter) 608
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 1838.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.24641
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1153229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:26:11

Md:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1153229
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:26:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2010-12-21T22:18:41.88 0.3 undecidable manual Sg 72 27.3504 -0.58 63
IV.PIEI.HHE. 2010-12-21T22:18:40.31 0.3 undecidable manual Sg 17 20.4684 0.001 73
IV.SSFR.HHZ. 2010-12-21T22:18:38.53 0.1 undecidable manual Pg 72 27.3504 0.312 91
IV.ATPC.HHN. 2010-12-21T22:18:38.37 0.3 undecidable manual Sg 359 13.4754 0.154 72
IV.PIEI.HHE. 2010-12-21T22:18:37.00 0.1 undecidable manual Pg 17 20.4684 0.023 97
IV.MURB.HHE. 2010-12-21T22:18:37.76 0.3 undecidable manual Sg 154 11.877 -0.023 74
IV.ATPC.HHN. 2010-12-21T22:18:35.91 0.1 undecidable manual Pg 359 13.4754 0.141 96
IV.ATVO.HHZ. 2010-12-21T22:18:35.88 0.1 undecidable manual Sg 301 4.995 -0.364 93
IV.MURB.HHE. 2010-12-21T22:18:35.66 0.1 undecidable manual Pg 154 11.877 0.141 97
IV.ATVO.HHZ. 2010-12-21T22:18:34.66 0.1 undecidable manual Pg 301 4.995 0.026 100
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