气候变化领域集成服务门户(CCPortal): Trends of Sediment Resuspension and Budget in Southern Lake Michigan Under Changing Wave Climate and Hydrodynamic Environment

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DOI	10.1029/2023JC020180
	Trends of Sediment Resuspension and Budget in Southern Lake Michigan Under Changing Wave Climate and Hydrodynamic Environment
	Zhu, Longhuan; Xue, Pengfei; Meadows, Guy A.; Huang, Chenfu; Ge, Jianzhong; Troy, Cary D.; Wu, Chin H.
发表日期	2024
ISSN	2169-9275
EISSN	2169-9291
起始页码	129
结束页码	4
卷号	129 期号:4
英文摘要	Sediment suspension and transport driven by waves and currents play a significant role in both the ecological and physical environments of large lakes. Lake Michigan has faced a rapidly increasing water level associated with intensified wind waves in the past decade. To investigate the spatiotemporal characteristics of suspended sediment concentration (SSC) and associated coastal sediment budgets in southern Lake Michigan, a 30-year (1991-2020) hindcast was performed using a coupled wave-current-sediment model (SWAN-FVCOM-CSTMS). We found that in southern Lake Michigan, the basin-wide mean SSC increased, and the coastal sediment loss accelerated dramatically, corresponding with intensified waves, currents and lake water level rises over the past decade. The basin-wide mean SSC, coastal sediment loss, wave height, wind speed, current speed, and water level in southern Lake Michigan are highly correlated. Spatially, the results reveal decreases in coastal SSC and sediment loss in the western portion of the southern basin, while the eastern sectors show an increase in both metrics. This reflects a clear shift in the wave climate and hydrodynamic environment. The alterations in long-term coastal sediment budgets imply that considerable shoreline transformations are being influenced by modifications in the wave climate. Understanding the spatiotemporal characteristics of SSC and coastal sediment budgets is crucial for strategic water resource management and coastal infrastructure planning. The movement of sediment caused by waves and currents greatly impacts the health and shape of large lakes. Over the past decade, Lake Michigan's water level has been rising rapidly, associated with stronger wind waves. To understand how these changes affect the amount of sediment in the water and along the shore in southern Lake Michigan, we employed a complex model to capture sediment changes over past the 30 years (1991-2020). We found that the average amount of sediment suspended in the water and the loss of sediment along the shore both increased as the lake's water level rose and waves became more intense. These changes were strongly correlated with the height of the waves, wind speed, and water level in the lake. We also saw decreases in coastal suspended sediment concentration and sediment loss in the western portion of the southern basin, while an increase in sediment loss within its eastern sectors, reflecting a clear shift in the wave climate and hydrodynamic environment. The changes in coastal sediment over time suggest significant shoreline reshaping, driven by shifts in wave patterns and the hydrodynamic conditions. It's important to understand these changes to manage our water resources effectively and plan our coastal infrastructures wisely. Mean SSC and coastal sediment loss in southern Lake Michigan accelerated with intensified waves and lake level rise in the last decade Coastal SSC and sediment loss decreased in the western lake but increased in the eastern lake following the changes in incident wave energy Basin-wide mean SSC, coastal sediment loss, wave height, wind speed, and water level in southern Lake Michigan are highly correlated
英文关键词	sediment transport; wave climate; hydrodynamic modeling; great lakes; climate change; coastal erosion
语种	英语
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001197061500001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306811
作者单位	Michigan Technological University; Michigan Technological University; United States Department of Energy (DOE); Argonne National Laboratory; East China Normal University; Purdue University System; Purdue University; University of Wisconsin System; University of Wisconsin Madison
推荐引用方式 GB/T 7714	Zhu, Longhuan,Xue, Pengfei,Meadows, Guy A.,et al. Trends of Sediment Resuspension and Budget in Southern Lake Michigan Under Changing Wave Climate and Hydrodynamic Environment[J],2024,129(4).
APA	Zhu, Longhuan.,Xue, Pengfei.,Meadows, Guy A..,Huang, Chenfu.,Ge, Jianzhong.,...&Wu, Chin H..(2024).Trends of Sediment Resuspension and Budget in Southern Lake Michigan Under Changing Wave Climate and Hydrodynamic Environment.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,129(4).
MLA	Zhu, Longhuan,et al."Trends of Sediment Resuspension and Budget in Southern Lake Michigan Under Changing Wave Climate and Hydrodynamic Environment".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 129.4(2024).