Earthquake with magnitude of ML 2.0 on date 08-04-2011 and time 09:05:57 (Italy) in region Tirreno Meridionale (MARE)

A magnitude ML 2.0 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 08-04-2011 07:05:57 (UTC)
  • 08-04-2011 09:05:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.5380, 13.3700 at 11 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

An earthquake occurred to
47 Km N of Palermo (674435 inhabitants)
52 Km N of Bagheria (55387 inhabitants)
94 Km NE of Trapani (68759 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 2.2
ML 2.0
2011-04-08
07:05:57
38.538 13.37 11 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1193399
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-08 07:05:57 ± 0.31
Latitude 38.5380 ± 0.0225
Longitude 13.3700 ± 0.0471
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1193399

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4579
Semi-minor axis of confidence ellipse (meter) 1421
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 4802.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.75
Epicentral distance of station closest to the epicenter (degree) 0.22573
Epicentral distance of station farthest from the epicenter (degree) 0.84356
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 1193399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:19:43

Md:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1193399
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:19:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ALJA.HHZ. 2011-04-08T07:06:14.44 0.3 undecidable manual Pg 159 93.6396 0.68 64
IV.SOLUN.HHN. 2011-04-08T07:06:14.81 0.6 undecidable manual Sg 164 51.4152 0.683 46
IV.PLLN.SHE. 2011-04-08T07:06:12.51 0.3 undecidable manual Pg 132 90.5427 -0.76 62
IV.GIB.HHN. 2011-04-08T07:06:12.67 0.3 undecidable manual Pg 137 83.3499 0.495 70
IV.MPG.SHN. 2011-04-08T07:06:11.46 0.3 undecidable manual Sg 181 41.7249 -0.074 83
IV.USI.HHZ. 2011-04-08T07:06:07.87 0.3 undecidable manual Sg 319 25.0527 0.767 70
IV.SOLUN.HHN. 2011-04-08T07:06:07.31 0.3 undecidable manual Pg 164 51.4152 0.062 81
IV.MPG.SHN. 2011-04-08T07:06:04.91 0.3 undecidable manual Pg 181 41.7249 -0.842 66
IV.USI.HHZ. 2011-04-08T07:06:02.60 0.1 undecidable manual Pg 319 25.0527 -0.593 100
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