A CURRENT-ACTIVATED SEDIMENT TRAP

被引：4

作者：

HARGRAVE, B ^{[1
]}

SIDDALL, G ^{[1
]}

STEEVES, G ^{[1
]}

AWALT, G ^{[1
]}

机构：

[1] FISHERIES & OCEANS CANADA,BEDFORD INST OCEANOG,DEPT FISHERIES & OCEANS,ENGN & TECH SERV,DARTMOUTH B2Y 4A2,NS,CANADA

来源：

LIMNOLOGY AND OCEANOGRAPHY | 1994年 / 39卷 / 02期

关键词：

D O I：

10.4319/lo.1994.39.2.0383

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A current-activated sediment trap is described that collects particles based on preselected cur-rent speed and direction criteria. The collector incorporates a steep-walled funnel, a motor-driven carousel with sample cups, an absolute optical shaft encoder, and an acoustic current meter. A field trial of the trap was carried out in a shallow marine embayment over 3 d where it correctly positioned cups in response to tidal changes in current speed and direction. Particle organic content and sedimentation rates calculated over hourly intervals were similar to measurements with a standard sequential sampling trap over several hours when the two traps were deployed simultaneously.

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页码：383 / 390

页数：8

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