Experimental Field Study of Shell Abrasion
Experimental Field Study of Shell Abrasion
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壳体磨损实验现场研究
DOI：
10.1306/74d71843-2b21-11d7-8648000102c1865d
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发表时间：
1967
影响因子：
2
通讯作者：
E. G. Driscoll
中科院分区：
文献类型：
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作者：
E. G. Driscoll
摘要在马萨诸塞州海岸的三种海洋环境中，短尾小球藻(Mercenaria Ureenaria)、小球藻(Mya Arenaria)和长尾小球藻(Aequecten IrRadians)的贝壳都受到了磨损。壳牌被暴露在砾石海滩上的中度冲浪18小时；在沙滩上的中度冲浪100小时；以及在30英尺深的沙底上的潮下条件一年。砂砾质海滩磨损最大，潮下带磨损最小。单位重量表面积较大的物种在百分比基础上减少得更快，但单位重量表面积较小的物种在绝对值上损失更多的壳材料。在决定阀门的磨损改性时，颗粒尺寸是最重要的。冲浪作用比滚筒中的实验室磨损更容易改变阀板。此外，阀门不同部分的不同磨损在SURF中很常见，但在实验室中不常见。由于溶液或磨损，在当前的冲刷沙底上暴露一年会导致阀门几乎不会发生变化。放置在这种环境中的阀门由于结壳而增加了重量。
ABSTRACT Shells of Mercenaria mercenaria, Mya arenaria and Aequipecten irradians have been subjected to abrasion in three marine environments on the Massachusetts coast. Shells were exposed to moderate surf on a gravelly sand beach for 18 hours; to moderate surf on a sand beach for 100 hours; and to sublittoral conditions on a sand bottom in 30 feet of water for one year. Abrasion is greatest on the gravelly sand beach and least in the sublittoral zone. Species with more surface area per unit weight are more rapidly reduced on a percentage basis but those with less surface area per unit weight lose more shell material in absolute terms. Grain size is of overriding importance in determining the modification of valves by abrasion. Surf action modifies pelecypod valves much more slo ly than laboratory abrasion in rolling barrels. Furthermore, differential abrasion of various portions of the valve are common in surf but not in the laboratory. Exposure on a current swept sand bottom for one year results in little modification of valves, due to solution or abrasion. Valves placed in this environment gained weight due to encrusting organisms.