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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >On the nature and causes of luminescent lines and bands in coral skeletons: II. Contribution of skeletal crystals
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On the nature and causes of luminescent lines and bands in coral skeletons: II. Contribution of skeletal crystals

机译：关于珊瑚骨骼中发光线和条带的性质和成因：II。骨骼晶体的贡献

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摘要

Slices cut from skeletons of massive Porites display two types of luminescence when illuminated by ultra-violet (UV) light: (1) faint luminescent banding associated with the annual skeletal density banding pattern and (2) narrow lines of strong luminescence associated with monsoonal runoff of fresh water from nearby land. Barnes and Taylor [Barnes, D.J. Taylor, R.B. 2001a. On the nature and causes of luminescent lines and bands in coral skeletons. Coral Reefs 19, 221-230] showed how larger skeletal holes could give rise to increased luminescence—thus accounting for the link between skeletal density banding and faint luminescent banding. Work described here tests the notion that strongly luminescent lines are also regions of lower skeletal density. Experiments involving real and artificial coral skeletons indicated that likely changes in hole size in real skeletons cannot account for the amount of luminescence associated with luminescent lines. Larger particles (< 50 μm) of powdered skeleton from cut from luminescent lines were more luminescent than similar particles cut from adjacent less luminescent skeleton. However, very small particles (< 3 μm) from the two regions of skeleton showed no difference in luminescence. Since skeletal crystals would have been largely destroyed by powdering skeleton to very small particle sizes, most of the luminescence of strongly luminescent lines is probably associated with changed crystal size and packing, with changed crystal chemistry, or with a combination of these possibilities.
机译：从大块多孔陶瓷的骨架上切下的切片在紫外线（UV）照射下显示两种发光类型：（1）与年度骨骼密度带状图案相关的微弱发光带和（2）与季风径流相关的强发光的窄线来自附近土地的淡水。 Barnes and Taylor [Barnes，D.J.泰勒（Taylor），R.B. 2001a。关于珊瑚骨骼中发光线和条带的性质和成因。 [Coral Reefs 19，221-230]显示了较大的骨骼孔如何导致发光增加-因此可以解释骨骼密度带和微弱的发光带之间的联系。这里描述的工作检验了强烈发光的线也是较低骨骼密度的区域的观点。涉及真实和人造珊瑚骨骼的实验表明，真实骨骼中孔尺寸的可能变化无法解释与发光线相关的发光量。从发光线切割得到的粉末状骨架的较大颗粒（<50μm）比从相邻的发光性较低的骨架切割出的相似颗粒具有更大的发光性。但是，来自骨架两个区域的非常小的颗粒（<3μm）在发光方面没有差异。由于骨骼粉末会被粉化成非常小的颗粒而在很大程度上破坏骨骼晶体，因此强发光线的大部分发光可能与晶体尺寸和堆积的改变，晶体化学性质的改变或这些可能性的结合有关。

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