Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-12-2010 and time 17:19:25 (Italy) in region 3 km E Tiglieto (GE)

A magnitude ML 1.2 earthquake occured in region: 3 km E Tiglieto (GE), on

  • 28-12-2010 16:19:25 (UTC)
  • 28-12-2010 17:19:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5320, 8.6550 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Tiglieto GE 3 546 546
Campo Ligure GE 4 2955 3501
Rossiglione GE 4 2779 6280
Masone GE 6 3679 9959
Urbe SV 7 700 10659
Belforte Monferrato AL 10 515 11174
Molare AL 11 2181 13355
Cassinelle AL 11 914 14269
Ovada AL 12 11477 25746
Tagliolo Monferrato AL 12 1581 27327
Mele GE 12 2725 30052
Lerma AL 13 869 30921
Casaleggio Boiro AL 13 372 31293
Cremolino AL 13 1086 32379
Morbello AL 14 402 32781
Sassello SV 14 1777 34558
Mornese AL 15 737 35295
Arenzano GE 15 11519 46814
Prasco AL 15 521 47335
Trisobbio AL 16 655 47990
Rocca Grimalda AL 16 1512 49502
Cogoleto GE 16 9172 58674
Montaldeo AL 16 265 58939
Ponzone AL 17 1051 59990
Carpeneto AL 17 977 60967
Grognardo AL 17 259 61226
Bosio AL 17 1227 62453
Morsasco AL 17 679 63132
Silvano d'Orba AL 17 1988 65120
Castelletto d'Orba AL 18 2047 67167
Parodi Ligure AL 18 715 67882
Montaldo Bormida AL 18 664 68546
Voltaggio AL 18 738 69284
Visone AL 19 1194 70478
Fraconalto AL 19 336 70814
Campomorone GE 19 6996 77810
Orsara Bormida AL 19 424 78234
Malvicino AL 19 85 78319
Ceranesi GE 19 3875 82194
Cavatore AL 19 291 82485
San Cristoforo AL 20 608 83093
Stella SV 20 3009 86102
Cartosio AL 20 747 86849
Mioglia SV 20 526 87375
Pontinvrea SV 20 847 88222
Varazze SV 20 13251 101473

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Genova (586655 inhabitants)
28 Km NE of Savona (61345 inhabitants)
43 Km S of Alessandria (93943 inhabitants)
54 Km SE of Asti (76202 inhabitants)
83 Km SW of Pavia (72576 inhabitants)
89 Km E of Cuneo (56081 inhabitants)
89 Km S of Vigevano (63310 inhabitants)
93 Km SE of Moncalieri (57294 inhabitants)
98 Km SE of Torino (890529 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 		2010-12-28
16:19:25		 44.532 8.655 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1154579
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2010-12-28 16:19:25 ± 0.16
Latitude 44.5320 ± 0.0045
Longitude 8.6550 ± 0.0114
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1154579

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 895
Semi-minor axis of confidence ellipse (meter) 474
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 1029.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 309
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59445
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 0.0
Num. used stations
Type of magnitude ML
Reference to an origin 1154579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:27:58

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1154579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:27:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RORO.HHN. 2010-12-28T16:19:45.89 0.6 undecidable manual Sg 225 65.9895 -0.021 45
GU.FINB.HHE. 2010-12-28T16:19:41.25 10.0 undecidable manual Pg 0 0 0
IV.QLNO.HHN. 2010-12-28T16:19:37.24 0.1 undecidable manual Sg 227 33.6441 -0.037 96
GU.RORO.HHN. 2010-12-28T16:19:37.48 0.3 undecidable manual Pg 225 65.9895 0.158 66
IV.QLNO.HHN. 2010-12-28T16:19:32.30 0.1 undecidable manual Pg 227 33.6441 -0.036 96
GU.PCP.HHZ. 2010-12-28T16:19:30.24 0.1 undecidable manual Sg 276 8.7801 0.044 100
GU.PCP.HHZ. 2010-12-28T16:19:28.17 0.1 undecidable manual Pg 276 8.7801 -0.077 99
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