Earthquake with magnitude of ML 1.3 on date 18-02-2009 and time 11:46:45 (Italy) in region 4 km SE Pieve Santo Stefano (AR)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Pieve Santo Stefano (AR), on

  • 18-02-2009 10:46:45 (UTC)
  • 18-02-2009 11:46:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6470, 12.0860 at 9 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
Pieve Santo Stefano AR 4 3183 3183
Caprese Michelangelo AR 8 1426 4609
Sansepolcro AR 10 15884 20493
Badia Tedalda AR 11 1087 21580
Anghiari AR 12 5638 27218
San Giustino PG 13 11297 38515
Chiusi della Verna AR 14 2023 40538
Citerna PG 17 3531 44069
Chitignano AR 17 899 44968
Borgo Pace PU 17 606 45574
Casteldelci RN 17 407 45981
Verghereto FC 18 1907 47888
Monterchi AR 18 1757 49645
Sestino AR 18 1355 51000
Subbiano AR 19 6331 57331

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NE of Arezzo (99543 inhabitants)
56 Km S of Cesena (96758 inhabitants)
60 Km SW of Rimini (147750 inhabitants)
64 Km S of Forlì (117913 inhabitants)
65 Km NW of Perugia (166134 inhabitants)
68 Km E of Firenze (382808 inhabitants)
71 Km NE of Siena (53903 inhabitants)
73 Km W of Pesaro (94582 inhabitants)
73 Km S of Faenza (58541 inhabitants)
74 Km E of Scandicci (50609 inhabitants)
78 Km W of Fano (60888 inhabitants)
84 Km E of Prato (191150 inhabitants)
84 Km SE of Imola (69797 inhabitants)
86 Km S of Ravenna (159116 inhabitants)
92 Km NW of Foligno (57155 inhabitants)
99 Km E of Pistoia (90315 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 1.3
2009-02-18
10:46:45
43.647 12.086 9 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 745179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-02-18 10:46:45 ± 0.09
Latitude 43.6470 ± 0.0072
Longitude 12.0860 ± 0.0050
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 745179

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 809
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 894.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
Number of associated phases, regardless of their use for origin computation 9
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 745179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:05:31

Md:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 745179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 14:05:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHE. 2009-02-18T10:46:59.12 0.3 undecidable manual Sg 109 38.1285 0.14 71
IV.PIEI.HHE. 2009-02-18T10:46:53.28 0.1 undecidable manual Pg 109 38.1285 -0.202 93
IV.BADI.EHE. 2009-02-18T10:46:53.59 0.3 undecidable manual Sg 140 19.869 -0.01 75
IV.PARC.HHZ. 2009-02-18T10:46:51.22 0.3 undecidable manual Sg 89 12.2766 -0.105 74
IV.BADI.EHE. 2009-02-18T10:46:50.41 0.3 undecidable manual Pg 140 19.869 0.034 75
IV.CRE.HHZ. 2009-02-18T10:46:50.99 0.3 undecidable manual Sg 254 11.2776 -0.072 75
IV.PARC.HHZ. 2009-02-18T10:46:49.19 0.1 positive manual Pg 89 12.2766 0.129 99
IV.CRE.HHZ. 2009-02-18T10:46:48.99 0.1 positive manual Pg 254 11.2776 0.078 100
IV.VENT.EHE. 2009-02-18T10:46:35.47 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