气候变化领域集成服务门户(CCPortal): Observations of the Size Distribution of Frazil Ice in an Ice Shelf Water Plume

CCPortal

DOI	10.1029/2020GL090498
	Observations of the Size Distribution of Frazil Ice in an Ice Shelf Water Plume
	Frazer E.K.; Langhorne P.J.; Leonard G.H.; Robinson N.J.; Schumayer D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	The size distribution of frazil ice is currently unconstrained in ice shelf cavity modeling. Here we observe the time-dependent behavior of the number and size of frazil ice particles in an Ice Shelf Water plume. A novel acoustic scattering inversion was used to infer frazil ice crystal diameters, assuming a log-normal distribution. Observation sites were on land-fast sea ice approximately 13 and 33 km from the front of the McMurdo Ice Shelf, Antarctica. The water column from the ice-water interface to 30 m below mean sea level was monitored over 3 weeks in November of 2016 and 2017. At 15 m below sea level the mean frazil crystal diameter was ∼1 mm. Fractional ice volume, derived from frazil crystal size and number density, correlates with in situ supercooling (up to 50 mK at 15 m below sea level). The data presented here provide valuable input for model initiation and evaluation. ©2020. The Authors.
英文关键词	Crystals; Normal distribution; Sea ice; Size distribution; Acoustic Scattering; Frazil crystals; Ice shelf waters; Ice-water interfaces; Log-normal distribution; Mcmurdo ice shelves; Number and size; Time dependent behavior; Sea level; hydrothermal plume; ice shelf; sea ice; sea level change; seasonality; snowmelt; supercooling; time dependent behavior; Antarctica; East Antarctica; McMurdo Ice Shelf
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/169483
作者单位	Department of Physics, University of Otago, Dunedin, New Zealand; School of Surveying, University of Otago, Dunedin, New Zealand; National Institute of Water and Atmospheric Research, Wellington, New Zealand; The Dodd-Walls Centre for Photonic and Quantum Technologies, Dunedin, New Zealand
推荐引用方式 GB/T 7714	Frazer E.K.,Langhorne P.J.,Leonard G.H.,et al. Observations of the Size Distribution of Frazil Ice in an Ice Shelf Water Plume[J],2020,47(21).
APA	Frazer E.K.,Langhorne P.J.,Leonard G.H.,Robinson N.J.,&Schumayer D..(2020).Observations of the Size Distribution of Frazil Ice in an Ice Shelf Water Plume.Geophysical Research Letters,47(21).
MLA	Frazer E.K.,et al."Observations of the Size Distribution of Frazil Ice in an Ice Shelf Water Plume".Geophysical Research Letters 47.21(2020).