Earthquake with magnitude of ML 2.3 on date 11-08-2009 and time 04:09:28 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.3 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 11-08-2009 02:09:28 (UTC)
  • 11-08-2009 04:09:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.2080, 14.7260 at 252 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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
ML 2.3 2009-08-11
02:09:28
39.208 14.726 252 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 946289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-08-11 02:09:28 ± 0.25
Latitude 39.2080 ± 0.0225
Longitude 14.7260 ± 0.0186
Depth (km) 252 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 946289

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3157
Semi-minor axis of confidence ellipse (meter) 948
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 2968.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 315
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 1.31391
Epicentral distance of station farthest from the epicenter (degree) 1.60439
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 946289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 18:03:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPAZ.HHZ. 2009-08-11T02:10:38.03 0.6 undecidable manual Sg 141 178.0884 0.124 42
IV.PLAC.HHE. 2009-08-11T02:10:36.54 0.6 undecidable manual Sg 119 170.1963 -0.371 42
IV.SOI.EHZ. 2009-08-11T02:10:36.97 0.6 undecidable manual Sg 137 170.5959 0.018 45
IV.SERS.HHZ. 2009-08-11T02:10:36.83 0.3 undecidable manual Sg 96 169.9965 -0.05 67
MN.CEL.HHZ. 2009-08-11T02:10:34.30 0.6 undecidable manual Sg 136 145.8429 0.276 47
IV.SERS.HHZ. 2009-08-11T02:10:08.09 0.1 undecidable manual Pg 96 169.9965 0.261 86
IV.MPAZ.HHZ. 2009-08-11T02:10:08.38 0.1 undecidable manual Pg 141 178.0884 -0.042 86
IV.SOI.EHZ. 2009-08-11T02:10:07.82 0.1 undecidable manual Pg 137 170.5959 -0.051 89
IV.PLAC.HHE. 2009-08-11T02:10:07.67 0.1 undecidable manual Pg 119 170.1963 -0.177 87
MN.CEL.HHZ. 2009-08-11T02:10:06.19 0.1 undecidable manual Pg 136 145.8429 0.01 100
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
Waveforms Seismic signals in miniseed + resp format Download