ID 4884
File
Title Transcription
カイガン イッタイ ノ ヒョウチャク ゴミ リョウ ヤ タイセキ ゴミ リョウ ノ シヒョウチ オ エル タメ ニ ヒツヨウ ナ チョウサ ハンイ
Title Alternative
A Method of Determining a Suitable Survey Area for Measuring the Reliable Quantities of Beached Litter and Accumulated Litter on Sandy Beaches
Authors
Keywords
Suitable survey area
Beach litter quantity excess
Accumulated plastic debris
Beached litter
Floating marine debris
Abstract
The quantity of accumulated litter on a beach indicates the pollution level, whereas the quantity of beached litter relates to the density of floating marine litter and the amount of inappropriate waste disposal. The purpose of investigating either accumulated litter or beached litter is to obtain the index quantity of litter for an entire beach, and to research the changes of quantity or the differences between other beaches. For this purpose, it is essential to investigate several representative items on a long beach area, with the exclusion of small debris. The reliabilities for the survey area and the measured value can be evaluated with an excess quantity, which is represented by the equation [100×(|Q1-­Q2|)/(Q1+Q2)] where QN is the quantity of litter on Site N. In order to reduce the influence of irregular data of survey areas, it is important to investigate several locations. Assuming that the excess quantity is about 10%, in order to obtain the reliable quantity of the beached litter on the beaches facing the Sea of Japan, it is nessary to investigate at least 500 m of beach-­line area of 6 beaches every month.
Publisher
鳥取大学大学院工学研究科
Content Type
Departmental Bulletin Paper
ISSN
0385-8596
Journal Title
鳥取大学大学院工学研究科/工学部研究報告
Current Journal Title
Reports of the Faculty of Engineering, Tottori University
Volume
45
Start Page
85
End Page
94
Published Date
2014-12-25
Text Version
Publisher
Citation
鳥取大学大学院工学研究科/工学部研究報告. 2014, 45, 85-94
Department
Faculty of Engineering/Graduate School of Engineering
Language
Japanese