@article{oai:tsukuba.repo.nii.ac.jp:00016886,
 author = {武若, 聡 and GALAL, ELSAYED M. and TAKEWAKA, SATOSHI},
 issue = {3},
 journal = {Coastal engineering journal},
 month = {Sep},
 note = {application/pdf, Intertidal morphology was monitored continuously with an X-band radar at the research
pier HORS in Hasaki, Japan. Hourly-averaged radar images were processed to observe longshore
distributions of shoreline positions. Variations of longshore mean shoreline positions
and their fluctuation intensities observed in the years 2005 and 2006 showed a seasonal
change which followed the so-called beach-cycle. Longshore pixel intensities close to the
waterline were extracted from time-averaged images for every hour of the two years to
process longshore time-stack image. Longshore migration speeds of shoreline mega-cusps
were estimated by cross correlation analysis of the time-stack image, and the reliability of
the method was checked. Migration speeds were compared to measured longshore current
speeds at the pier and the longshore component of the wave power, showing that they
are highly synchronized for most conditions. Finally, the migration statistics were related
to the wave data, and the results showed that the northwards migration rates were typically
larger than southwards rates, which was consistent with the statistical results for
wave forcing variables. Also, the relationship between the migration speeds and the forcing
variables indicates that the migration was more active when the wave incidence angle was
close to 45◦.},
 pages = {247--276},
 title = {LONGSHORE MIGRATION OF SHORELINE MEGA-CUSPS OBSERVED WITH X-BAND RADAR},
 volume = {50},
 year = {2008}
}