Earthquake with magnitude of ML 2.0 on date 28-05-2011 and time 01:56:27 (Italy) in region 6 km W Palazzuolo sul Senio (FI)

A magnitude ML 2.0 earthquake occured in region: 6 km W Palazzuolo sul Senio (FI), on

  • 27-05-2011 23:56:27 (UTC)
  • 28-05-2011 01:56:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1230, 11.4770 at 27 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
Palazzuolo sul Senio FI 6 1154 1154
Firenzuola FI 8 4726 5880
Castel del Rio BO 10 1246 7126
Marradi FI 12 3139 10265
Casola Valsenio RA 16 2617 12882
Fontanelice BO 16 1943 14825
Monghidoro BO 17 3749 18574
Borgo Tossignano BO 20 3288 21862
Borgo San Lorenzo FI 20 18211 40073

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Imola (69797 inhabitants)
37 Km W of Faenza (58541 inhabitants)
41 Km NE of Prato (191150 inhabitants)
43 Km S of Bologna (386663 inhabitants)
43 Km NE of Firenze (382808 inhabitants)
46 Km W of Forlì (117913 inhabitants)
47 Km NE of Scandicci (50609 inhabitants)
49 Km E of Pistoia (90315 inhabitants)
61 Km W of Cesena (96758 inhabitants)
66 Km W of Ravenna (159116 inhabitants)
73 Km SE of Modena (184973 inhabitants)
80 Km NW of Arezzo (99543 inhabitants)
80 Km S of Ferrara (133155 inhabitants)
84 Km E of Lucca (89046 inhabitants)
87 Km SE of Carpi (70699 inhabitants)
87 Km W of Rimini (147750 inhabitants)
90 Km N of Siena (53903 inhabitants)
93 Km SE of Reggio nell'Emilia (171345 inhabitants)
97 Km E of Pisa (89158 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 1.8
ML 2.0
2011-05-27
23:56:27
44.123 11.477 27 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1223069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-27 23:56:27 ± 0.41
Latitude 44.1230 ± 0.0099
Longitude 11.4770 ± 0.0238
Depth (km) 27 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1223069

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1594
Semi-minor axis of confidence ellipse (meter) 1249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 2195.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
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) 0.35
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:2.0

Field Value
Value 2.0
Uncertainty 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1223069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:59:57

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1223069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:59:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHN. 2011-05-27T23:56:41.39 0.3 undecidable manual Sg 129 38.1285 0.25 70
IV.LAV9.HHZ. 2011-05-27T23:56:39.73 10.0 undecidable manual Pg 0 0 0
IV.MTRZ.HHE. 2011-05-27T23:56:37.70 0.6 undecidable manual Sg 349 21.5673 0.079 49
IV.SEI.SHZ. 2011-05-27T23:56:36.32 0.3 undecidable manual Sg 231 12.0768 0.141 75
IV.VMG.SHZ. 2011-05-27T23:56:36.55 0.6 undecidable manual Sg 163 18.6702 -0.573 44
IV.SFI.EHN. 2011-05-27T23:56:35.19 0.1 undecidable manual Pg 129 38.1285 -0.125 96
IV.VMG.SHZ. 2011-05-27T23:56:33.08 0.3 undecidable manual Pg 163 18.6702 0.087 75
IV.MTRZ.HHE. 2011-05-27T23:56:33.09 0.3 undecidable manual Pg 349 21.5673 -0.189 73
IV.SEI.SHZ. 2011-05-27T23:56:32.59 0.1 undecidable manual Pg 231 12.0768 0.146 100
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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