Earthquake with magnitude of ML 2.3 on date 31-07-2007 and time 18:36:43 (Italy) in region Costa Ionica Crotonese (Crotone)

A magnitude ML 2.3 earthquake occured in region: Costa Ionica Crotonese (Crotone), on

  • 31-07-2007 16:36:43 (UTC)
  • 31-07-2007 18:36:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 39.1850, 17.2160 at 4 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
Crotone KR 14 62178 62178
Strongoli KR 17 6571 68749
Rocca di Neto KR 18 5687 74436

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Crotone (62178 inhabitants)
62 Km NE of Catanzaro (90612 inhabitants)
81 Km E of Lamezia Terme (70714 inhabitants)
84 Km E 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 2.5
ML 2.3
2007-07-31
16:36:43
39.185 17.216 4 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 644559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2007-07-31 16:36:43 ± 0.44
Latitude 39.1850 ± 0.0171
Longitude 17.2160 ± 0.0255
Depth (km) 4 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 644559

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2684
Semi-minor axis of confidence ellipse (meter) 1053
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 50
Circular confidence region, given by single value of horizontal uncertainty (meter) 2906.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 277
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) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.35433
Epicentral distance of station farthest from the epicenter (degree) 1.34718
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 644559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:15:15

Md:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 644559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 12:15:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ORI.EHZ. 2007-07-31T16:37:19.76 0.1 undecidable manual Sg 326 116.1948 0.709 37
IV.SCHR.EHE. 2007-07-31T16:37:09.28 0.6 undecidable manual Pg 320 148.74 0.042 41
MN.CUC.HHZ. 2007-07-31T16:37:09.62 0.6 undecidable manual Pg 307 149.5392 0.251 39
IV.CRAC.EHE. 2007-07-31T16:37:08.34 0.1 undecidable manual Pg 333 146.8419 -0.608 72
IV.ORI.EHZ. 2007-07-31T16:37:04.25 0.3 undecidable manual Pg 326 116.1948 0.025 67
IV.SERS.HHZ. 2007-07-31T16:37:00.84 0.1 undecidable manual Sg 250 48.3183 0.062 50
IV.CARO.HHZ. 2007-07-31T16:36:59.84 0.3 undecidable manual Pg 275 85.9473 0.269 67
MN.TIP.HHZ. 2007-07-31T16:36:57.30 0.1 undecidable manual Sg 269 39.3273 -0.381 48
IV.SERS.HHZ. 2007-07-31T16:36:53.85 0.1 negative manual Pg 250 48.3183 0.178 98
MN.TIP.HHZ. 2007-07-31T16:36:51.72 0.1 negative manual Pg 269 39.3273 -0.167 100
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