Earthquake with magnitude of ML 1.2 on date 21-02-2009 and time 13:22:12 (Italy) in region 1 km NW Arcevia (AN)

A magnitude ML 1.2 earthquake occured in region: 1 km NW Arcevia (AN), on

  • 21-02-2009 12:22:12 (UTC)
  • 21-02-2009 13:22:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5070, 12.9330 at 5 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
Arcevia AN 1 4612 4612
Genga AN 9 1797 6409
Mergo AN 9 1037 7446
Serra San Quirico AN 9 2850 10296
Serra de' Conti AN 9 3746 14042
Sassoferrato AN 10 7285 21327
Pergola PU 10 6333 27660
Montecarotto AN 11 1987 29647
San Lorenzo in Campo PU 11 3414 33061
Barbara AN 11 1368 34429
Rosora AN 11 1985 36414
Poggio San Marcello AN 12 693 37107
Castelleone di Suasa AN 12 1676 38783
Castelplanio AN 12 3540 42323
Serra Sant'Abbondio PU 13 1027 43350
Fratte Rosa PU 14 966 44316
Ostra Vetere AN 15 3311 47627
Maiolati Spontini AN 15 6248 53875
Frontone PU 16 1300 55175
Cupramontana AN 16 4756 59931
Monte Roberto AN 17 3061 62992
Castelbellino AN 17 4947 67939
Corinaldo AN 18 4998 72937
Barchi PU 19 967 73904
Poggio San Vicino MC 19 246 74150
Fabriano AN 19 31480 105630
Mondavio PU 19 3810 109440

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km S of Fano (60888 inhabitants)
45 Km S of Pesaro (94582 inhabitants)
49 Km W of Ancona (100861 inhabitants)
63 Km NE of Perugia (166134 inhabitants)
64 Km NE of Foligno (57155 inhabitants)
68 Km SE of Rimini (147750 inhabitants)
85 Km E of Arezzo (99543 inhabitants)
89 Km SE of Cesena (96758 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 1.2
2009-02-21
12:22:12
43.507 12.933 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 745499
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-21 12:22:12 ± 0.32
Latitude 43.5070 ± 0.0081
Longitude 12.9330 ± 0.0136
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 745499

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1008
Semi-minor axis of confidence ellipse (meter) 854
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 116
Circular confidence region, given by single value of horizontal uncertainty (meter) 1421.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28958
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 745499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:05:53

Md:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 745499
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:05:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHN. 2009-02-21T12:22:24.22 0.3 undecidable manual Sg 276 32.1456 0.119 71
IV.FSSB.HHZ. 2009-02-21T12:22:21.38 0.3 undecidable manual Sg 329 24.1536 0.016 73
IV.PIEI.HHN. 2009-02-21T12:22:19.17 0.1 undecidable manual Pg 276 32.1456 -0.154 94
IV.FSSB.HHZ. 2009-02-21T12:22:17.72 0.3 undecidable manual Pg 329 24.1536 -0.027 73
IV.ARVD.HHE. 2009-02-21T12:22:14.47 0.1 undecidable manual Sg 145 1.1988 -0.095 100
IV.ARVD.HHE. 2009-02-21T12:22:13.99 0.1 undecidable manual Pg 145 1.1988 0.168 99
IV.NRCA.HHE. 2009-02-21T12:21:50.75 10.0 undecidable manual Pg 0 0 0
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