Microstructural characterization of ice cores
نویسندگان
چکیده
منابع مشابه
Advanced microstructural characterization of four East Antarctic firn/ice cores
The microstructures and microchemistry of four US International Trans-Antarctic Scientific Expedition ice cores were examined, at three depths (30, 60, 90m) each, using scanning electron microscopy, including electron backscattered patterns and energy-dispersive spectroscopy (EDS), in order to assess the relationship between chemical and physical properties. The physical characteristics (grain ...
متن کاملGases in ice cores.
Air trapped in glacial ice offers a means of reconstructing variations in the concentrations of atmospheric gases over time scales ranging from anthropogenic (last 200 yr) to glacial/interglacial (hundreds of thousands of years). In this paper, we review the glaciological processes by which air is trapped in the ice and discuss processes that fractionate gases in ice cores relative to the conte...
متن کاملPast temperature from ice cores
V. Masson-Delmotte, G. Dreyfus, P. Braconnot, S. Johnsen, J. Jouzel, M. Kageyama, A. Landais, M.-F. Loutre, J. Nouet, F. Parrenin, D. Raynaud, B. Stenni, and E. Tuenter Laboratoire des Sciences du Climat et de l’Environnement, CEA-CNRS-UVSQ, Bat 701 L’Orme des Merisiers, CEA Saclay, 91 191 Gif-sur-Yvette cédex, France Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark Institute...
متن کاملMicrostructural characterization of cyanobacterial mats from the McMurdo Ice Shelf, Antarctica.
The three-dimensional structures of two types of cyanobacterium-dominated microbial mats from meltwater ponds on the McMurdo Ice Shelf were as determined by using a broad suite of complementary techniques, including optical and fluorescence microscopy, confocal scanning laser microscopy, scanning electron microscopy with back-scattered electron-imaging mode, low-temperature scanning electron mi...
متن کاملIce Cores , High - Mountain Glaciers , and Climate
The near-global retreat of high-mountain glaciers and the shrinkage of ice fields and ice caps and retreat of their associated outlet glaciers are perhaps the most visible evidence for 20th-century climate change and the recent increase in the globally averaged near-surface temperatures of the Earth’s surface. The loss of high-mountain glaciers—including ice fields, ice caps, and other glaciers...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 2005
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756405781812853