气候变化领域集成服务门户(CCPortal): Enhanced; Climate-Driven Sedimentation on Salt Marshes

CCPortal

DOI	10.1029/2019GL086737
	Enhanced; Climate-Driven Sedimentation on Salt Marshes
	FitzGerald D.M.; Hughes Z.J.; Georgiou I.Y.; Black S.; Novak A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	With Arctic amplification (enhanced polar warming) possibly increasing periods of intense winter freezing and global warming producing more powerful extratropical storms, winter sedimentation on northern salt marshes may likely increase in the future. Here, we show that a large ice-rafting event in northern Massachusetts delivered the equivalent of 15 years of mineral deposition to the marsh surface in a single storm. During an intense extratropical cyclone in January 2018, sediment-laden ice was rafted onto the Great Marsh, Massachusetts, by an ~1-m storm surge coinciding with high astronomical tides. The muddy sand content combined with abundant shells indicates that the sediment originated from proximal bays and tidal flats. Sediment layers delivered by individual ice rafts averaged 3.19 cm in thickness, 12 times the combined organic and inorganic yearly vertical accretion rate on high marshes. This previously underappreciated vector for sediment deposition is likely to help marsh resiliency to sea-level rise. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deposition; Global warming; Ice; Sea level; Sediments; Storms; Tides; Astronomical tides; Extratropical cyclones; Extratropical storms; Ice-rafting events; Mineral depositions; Sediment deposition; Sediment layers; Vertical accretion; Wetlands; accretion; amplification; extratropical cyclone; freezing; global warming; saltmarsh; sea level change; sedimentation; storm surge; warming; winter; Massachusetts; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170332
作者单位	Department of Earth and Environment, Boston University, Boston, MA, United States; Department of Earth and Environmental Sciences, University of New Orleans, New Orleans, LA, United States
推荐引用方式 GB/T 7714	FitzGerald D.M.,Hughes Z.J.,Georgiou I.Y.,et al. Enhanced; Climate-Driven Sedimentation on Salt Marshes[J],2020,47(10).
APA	FitzGerald D.M.,Hughes Z.J.,Georgiou I.Y.,Black S.,&Novak A..(2020).Enhanced; Climate-Driven Sedimentation on Salt Marshes.Geophysical Research Letters,47(10).
MLA	FitzGerald D.M.,et al."Enhanced; Climate-Driven Sedimentation on Salt Marshes".Geophysical Research Letters 47.10(2020).