Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 03-09-2011 and time 20:39:38 (Italy) in region 3 km S Carrega Ligure (AL)

A magnitude ML 1.4 earthquake occured in region: 3 km S Carrega Ligure (AL), on

  • 03-09-2011 18:39:38 (UTC)
  • 03-09-2011 20:39:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5950, 9.1680 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
Carrega Ligure AL 3 84 84
Propata GE 4 142 226
Rondanina GE 5 62 288
Fascia GE 6 81 369
Torriglia GE 8 2311 2680
Rovegno GE 9 554 3234
Valbrevenna GE 9 798 4032
Mongiardino Ligure AL 10 165 4197
Montebruno GE 10 240 4437
Gorreto GE 10 97 4534
Vobbia GE 10 409 4943
Cabella Ligure AL 10 528 5471
Crocefieschi GE 12 548 6019
Fontanigorda GE 12 277 6296
Zerba PC 12 77 6373
Montoggio GE 13 2067 8440
Ottone PC 13 516 8956
Albera Ligure AL 14 325 9281
Roccaforte Ligure AL 14 136 9417
Savignone GE 15 3205 12622
Casella GE 15 3144 15766
Rocchetta Ligure AL 16 200 15966
Davagna GE 16 1884 17850
Neirone GE 16 916 18766
Cantalupo Ligure AL 17 527 19293
Lumarzo GE 17 1535 20828
Ronco Scrivia GE 17 4417 25245
Cerignale PC 17 127 25372
Favale di Malvaro GE 17 466 25838
Bargagli GE 18 2708 28546
Isola del Cantone GE 18 1540 30086
Busalla GE 18 5563 35649
Fabbrica Curone AL 18 656 36305
Brallo di Pregola PV 19 599 36904
Rezzoaglio GE 19 995 37899
Moconesi GE 20 2614 40513
Grondona AL 20 510 41023
Montacuto AL 20 278 41301
Tribogna GE 20 614 41915
Lorsica GE 20 468 42383
Sant'Olcese GE 20 5906 48289

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Genova (586655 inhabitants)
56 Km SE of Alessandria (93943 inhabitants)
63 Km NE of Savona (61345 inhabitants)
66 Km S of Pavia (72576 inhabitants)
66 Km SW of Piacenza (102191 inhabitants)
76 Km NW of La Spezia (93959 inhabitants)
83 Km E of Asti (76202 inhabitants)
84 Km SE of Vigevano (63310 inhabitants)
90 Km SW of Cremona (71901 inhabitants)
94 Km NW of Carrara (63133 inhabitants)
95 Km W of Parma (192836 inhabitants)
97 Km S of Milano (1345851 inhabitants)
99 Km NW of Massa (69479 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 1.9
ML 1.4 		2011-09-03
18:39:38		 44.595 9.168 10 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1280939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-09-03 18:39:38 ± 0.55
Latitude 44.5950 ± 0.0099
Longitude 9.1680 ± 0.0429
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1280939

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3368
Semi-minor axis of confidence ellipse (meter) 1053
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 270
Circular confidence region, given by single value of horizontal uncertainty (meter) 3573.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 271
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) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37322
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:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1280939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:19:48

Md:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1280939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:19:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SENI.EHZ. 2011-09-03T18:40:06.88 10.0 undecidable manual Pg 0 0 0
GU.SC2M.HHN. 2011-09-03T18:39:51.08 0.1 undecidable manual Sg 126 35.8419 0.358 93
IV.MSSA.HHE. 2011-09-03T18:39:51.71 0.1 undecidable manual Sg 138 41.4252 -0.504 89
IV.BOB.HHE. 2011-09-03T18:39:48.91 0.1 undecidable manual Sg 49 29.2485 -0.055 100
IV.MSSA.HHE. 2011-09-03T18:39:46.51 0.1 undecidable manual Pg 138 41.4252 0.112 97
GU.SC2M.HHN. 2011-09-03T18:39:45.65 0.1 undecidable manual Pg 126 35.8419 0.116 97
IV.BOB.HHE. 2011-09-03T18:39:44.47 0.1 undecidable manual Pg 49 29.2485 -0.048 100
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