Sequential monitoring of beach litter using webcams

Shin'ichiro Kako, Atsuhiko Isobe, Shinya Magome

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)


This study attempts to establish a system for the sequential monitoring of beach litter using webcams placed at the Ookushi beach, Goto Islands, Japan, to establish the temporal variability in the quantities of beach litter every 90. min over a one and a half year period. The time series of the quantities of beach litter, computed by counting pixels with a greater lightness than a threshold value in photographs, shows that litter does not increase monotonically on the beach, but fluctuates mainly on a monthly time scale or less. To investigate what factors influence this variability, the time derivative of the quantity of beach litter is compared with satellite-derived wind speeds. It is found that the beach litter quantities vary largely with winds, but there may be other influencing factors.

Original languageEnglish
Pages (from-to)775-779
Number of pages5
JournalMarine Pollution Bulletin
Issue number5
Publication statusPublished - 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution


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