TY - JOUR
T1 - Sequential monitoring of beach litter using webcams
AU - Kako, Shin'ichiro
AU - Isobe, Atsuhiko
AU - Magome, Shinya
N1 - Funding Information:
The authors express their sincere thanks to Profs. Masahisa Kubota and Takeshi Matsuno. This research was supported by the Global Research Fund (D-071) of the Ministry of the Environment , Japan. We thank Dr. Hirofumi Hinata (National Institute for Land and Infrastructure Management) for setting the webcams.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
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U2 - 10.1016/j.marpolbul.2010.03.009
DO - 10.1016/j.marpolbul.2010.03.009
M3 - Article
C2 - 20392465
AN - SCOPUS:77952950335
VL - 60
SP - 775
EP - 779
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 5
ER -