气候变化领域集成服务门户(CCPortal): Stochastic ice stream dynamics

CCPortal

DOI	10.1073/pnas.1600362113
	Stochastic ice stream dynamics
	Mantelli E.; Bertagni M.B.; Ridolfi L.
发表日期	2016
ISSN	0027-8424
起始页码	E4594
结束页码	E4600
卷号	113 期号:32
英文摘要	Ice streams are narrow corridors of fast-flowing ice that constitute the arterial drainage network of ice sheets. Therefore, changes in ice stream flow are key to understanding paleoclimate, sea level changes, and rapid disintegration of ice sheets during deglaciation. The dynamics of ice flow are tightly coupled to the climate system through atmospheric temperature and snow recharge, which are known exhibit stochastic variability. Here we focus on the interplay between stochastic climate forcing and ice stream temporal dynamics. Our work demonstrates that realistic climate fluctuations are able to (i) induce the coexistence of dynamic behaviors that would be incompatible in a purely deterministic system and (ii) drive ice stream flow away from the regime expected in a steady climate. We conclude that environmental noise appears to be crucial to interpreting the past behavior of ice sheets, as well as to predicting their future evolution.
英文关键词	Climate variability; Hopf bifurcation; Ice streams\|noise-induced phenomena
语种	英语
scopus关键词	ice; climate; Conference Paper; controlled study; dynamics; flow; noise; priority journal; stochastic model
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158903
作者单位	Mantelli, E., Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, 10129, Italy; Bertagni, M.B., Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, 10129, Italy; Ridolfi, L., Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Turin, 10129, Italy
推荐引用方式 GB/T 7714	Mantelli E.,Bertagni M.B.,Ridolfi L.. Stochastic ice stream dynamics[J],2016,113(32).
APA	Mantelli E.,Bertagni M.B.,&Ridolfi L..(2016).Stochastic ice stream dynamics.Proceedings of the National Academy of Sciences of the United States of America,113(32).
MLA	Mantelli E.,et al."Stochastic ice stream dynamics".Proceedings of the National Academy of Sciences of the United States of America 113.32(2016).