Earthquake with magnitude of ML 1.2 on date 04-03-2009 and time 09:39:39 (Italy) in region 5 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km E Norcia (PG), on

  • 04-03-2009 08:39:39 (UTC)
  • 04-03-2009 09:39:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7900, 13.1560 at 12 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 5 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Arquata del Tronto AP 12 1178 6416
Accumoli RI 13 667 7083
Preci PG 14 724 7807
Cascia PG 14 3217 11024
Montegallo AP 16 523 11547
Visso MC 17 1107 12654
Ussita MC 17 444 13098
Montemonaco AP 19 604 13702
Cittareale RI 19 482 14184
Cerreto di Spoleto PG 20 1075 15259
Poggiodomo PG 20 117 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
49 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 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 1.6
ML 1.2
2009-03-04
08:39:39
42.79 13.156 12 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 747949
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-03-04 08:39:39 ± 0.1
Latitude 42.7900 ± 0.0036
Longitude 13.1560 ± 0.0123
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 747949

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1017
Semi-minor axis of confidence ellipse (meter) 857
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
Circular confidence region, given by single value of horizontal uncertainty (meter) 1077.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 216
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) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.28239
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.6
Num. used stations
Type of magnitude ML
Reference to an origin 747949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:08:36

Md:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 747949
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:08:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHN. 2009-03-04T08:39:50.22 0.1 undecidable manual Sg 319 31.3464 0.165 48
IV.FDMO.HHN. 2009-03-04T08:39:49.11 0.1 undecidable manual Sg 348 27.8499 -0.014 49
IV.LNSS.HHN. 2009-03-04T08:39:47.74 0.1 undecidable manual Sg 204 22.8549 -0.039 50
IV.CESI.HHN. 2009-03-04T08:39:45.34 0.1 undecidable manual Pg 319 31.3464 -0.134 96
IV.FDMO.HHN. 2009-03-04T08:39:44.93 0.1 undecidable manual Pg 348 27.8499 -0.006 99
IV.LNSS.HHN. 2009-03-04T08:39:44.18 0.1 undecidable manual Pg 204 22.8549 0.02 100
IV.NRCA.HHZ. 2009-03-04T08:39:43.62 0.1 undecidable manual Sg 325 5.8941 -0.167 50
IV.NRCA.HHZ. 2009-03-04T08:39:42.00 0.1 undecidable manual Pg 325 5.8941 0.146 100
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