HISTORICAL CHRONOLOGIES OF SEDIMENTATION AND HEAVY-METAL CONTAMINATION IN STRANGFORD LOUGH, NORTHERN IRELAND

IF 0.6 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Biology and Environment-Proceedings of the Royal Irish Academy Pub Date : 2022-01-01 DOI:10.3318/BIOE.2008.108.2.109

J. Strong, M. Service

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引用次数: 5

Abstract

Abstract:Sediment coring for subsequent elemental analysis and radionuclide dating is an effective way to reconstruct sedimentation and contamination chronologies in sheltered marine environments. Of four sediment cores collected in Strangford Lough, three showed clear spikes in the mass accumulation of sediment in the late 1970s and early 1980s. These brief periods of heavy sedimentation also coincided with periods of conspicuous change in particle-size parameters in two cores. Monthly meteorological data for Northern Ireland suggest that wind speeds and rainfall were also above average for this period. However, the majority of the annualised meteorological data failed to correlate with the particle-size parameters or the sedimentation rate. Heavy-metal analysis indicated that most metals are near a predicted background concentration, although Cd appears to be particularly enriched, and Cd concentrations continue to increase in the most recent deposits. This study furthers our understanding of historical rates of sedimentation in Strangford Lough. The influence of anthropogenic activities on sedimentation dynamics is also discussed.

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北爱尔兰斯特兰奇福德湖沉积和重金属污染的历史年表

摘要:沉积物取心进行后续元素分析和放射性核素定年是重建遮蔽海洋环境沉积和污染年代学的有效方法。在斯特兰福德湾收集的四个沉积物岩心中，有三个显示出在20世纪70年代末和80年代初沉积物大量堆积的明显峰值。这些短暂的重沉积时期也与两个岩心中颗粒尺寸参数的显著变化时期相吻合。北爱尔兰的月度气象数据显示，风速和降雨量也高于同期的平均水平。然而，大部分的年化气象数据不能与颗粒尺寸参数或沉降速率相关联。重金属分析表明，大多数金属接近预测的背景浓度，尽管Cd似乎特别富集，并且Cd浓度在最近的矿床中继续增加。这项研究进一步加深了我们对斯特兰福德湾历史沉积速率的理解。讨论了人为活动对沉积动力学的影响。

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来源期刊

Biology and Environment-Proceedings of the Royal Irish Academy 环境科学-环境科学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： The journal aims to offer a broad coverage of the subject area, including the following: - biology and ecology of the Irish flora and fauna - microbial ecology - animal, plant and environmental physiology - global change - palaeoecology and palaeoclimatology - population biology; conservation of genetic resources - pollution and environmental quality; ecotoxicology - environmental management - hydrology - land use, agriculture, soils and environment. Submissions on other relevant topics are also welcome, and papers of a cross-disciplinary nature are particularly encouraged.