Earthquake with magnitude of ML 1.8 on date 11-04-2011 and time 18:18:05 (Italy) in region Costa Ionica Crotonese (Crotone)

A magnitude ML 1.8 earthquake occured in region: Costa Ionica Crotonese (Crotone), on

  • 11-04-2011 16:18:05 (UTC)
  • 11-04-2011 18:18:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.8850, 16.9180 at 6 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
Botricello CZ 8 5220 5220
Cropani CZ 15 4778 9998
Sellia Marina CZ 15 7513 17511
Marcedusa CZ 17 448 17959
Cutro KR 18 10541 28500
Isola di Capo Rizzuto KR 18 17643 46143
Belcastro CZ 19 1399 47542
Andali CZ 19 769 48311

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Catanzaro (90612 inhabitants)
28 Km SW of Crotone (62178 inhabitants)
53 Km E of Lamezia Terme (70714 inhabitants)
73 Km SE of Cosenza (67546 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 2.0
ML 1.8
2011-04-11
16:18:05
38.885 16.918 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1195079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-04-11 16:18:05 ± 0.23
Latitude 38.8850 ± 0.0072
Longitude 16.9180 ± 0.0104
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1195079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 967
Semi-minor axis of confidence ellipse (meter) 505
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 1204.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 254
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) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.23382
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1195079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:21:58

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1195079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:21:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHN. 2011-04-11T16:18:28.60 0.3 undecidable manual Sg 304 73.2711 -0.158 71
IV.LADO.HHZ. 2011-04-11T16:18:21.50 0.3 undecidable manual Sg 7 44.5221 0.416 71
IV.GRI.EHE. 2011-04-11T16:18:20.83 0.3 undecidable manual Sg 261 43.623 0.038 77
IV.CAR1.HHN. 2011-04-11T16:18:18.82 0.3 undecidable manual Pg 304 73.2711 -0.122 72
MN.TIP.HHN. 2011-04-11T16:18:17.82 0.3 undecidable manual Sg 337 35.4423 -0.167 77
IV.LADO.HHZ. 2011-04-11T16:18:14.33 0.1 undecidable manual Pg 7 44.5221 -0.183 100
IV.SERS.HHZ. 2011-04-11T16:18:14.88 0.3 undecidable manual Sg 310 25.9518 0.136 78
IV.GRI.EHE. 2011-04-11T16:18:14.45 0.3 undecidable manual Pg 261 43.623 0.108 76
MN.TIP.HHN. 2011-04-11T16:18:12.62 0.3 undecidable manual Pg 337 35.4423 -0.102 78
IV.SERS.HHZ. 2011-04-11T16:18:10.96 0.3 undecidable manual Pg 310 25.9518 0.111 79
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