A SIMPLE CLOSURE MECHANISM FOR A COMPACT, LARGE-DIAMETER, GRAVITY CORER

被引:29
作者
BOYLE, JF
机构
[1] Dept. of Geography, University of Liverpool, Liverpool, L69 3BX
关键词
CORER CLOSURE MECHANISM; LAKE SEDIMENT CORERS; GRAVITY CORERS;
D O I
10.1007/BF00678113
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A simple and reliable corer closure mechanism is described, which has three principal advantages over published designs for similar automatic gravity corers. First, it allows the use of large diameter tubes (at least 80 mm internal diameter), reducing core shortening effects. Second, it allows free passage of water during descent minimising bow wave effects. Third, it is compact enough for convenient use through seasonal ice cover.
引用
收藏
页码:85 / 87
页数:3
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