DOI: 10.1002/2015GL063541
论文题名: CellDyM: A room temperature operating cryogenic cell for the dynamic monitoring of snow metamorphism by time-lapse X-ray microtomography
作者: Calonne N. ; Flin F. ; Lesaffre B. ; Dufour A. ; Roulle J. ; Puglièse P. ; Philip A. ; Lahoucine F. ; Geindreau C. ; Panel J.-M. ; Du Roscoat S.R. ; Charrier P.
刊名: Geophysical Research Letters
ISSN: 0094-9595
EISSN: 1944-9326
出版年: 2015
卷: 42, 期: 10 起始页码: 3911
结束页码: 3918
语种: 英语
英文关键词: 3-D images
; instrumentation
; metamorphism
; snow
; tomography
Scopus关键词: Cells
; Cryogenics
; Cytology
; Heat conduction
; Imaging techniques
; Tomography
; 3-D image
; Dynamic monitoring
; Experimental conditions
; Instrumentation
; Metamorphism
; Snow metamorphisms
; Vacuum Insulation
; X ray microtomography
; Snow
; anisotropic medium
; anisotropy
; imaging method
; instrumentation
; metamorphism
; microstructure
; snow
; temperature gradient
; three-dimensional modeling
; tomography
; X-ray spectroscopy
英文摘要: Monitoring the time evolution of snow microstructure in 3-D is crucial for a better understanding of snow metamorphism. We, therefore, designed a cryogenic cell that precisely controls the experimental conditions of a sample while it is scanned by X-ray tomography. Based on a thermoelectrical regulation and a vacuum insulation, the cell operates at room temperature. It is, thus, adaptable to diverse scanners, offering advantages in terms of imaging techniques, resolution, and speed. Three-dimensional time-lapse series were obtained under equitemperature and temperature gradient conditions at a 7.8 μm precision. The typical features of each metamorphism and the anisotropic faceting behavior between the basal and prismatic planes, known to occur close to -2°C, were observed in less than 30 h. These results are consistent with the temperature fields expected from heat conduction simulations through the cell. They confirm the cell's accuracy and the interest of relatively short periods to study snow metamorphism. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931564217&doi=10.1002%2f2015GL063541&partnerID=40&md5=0f03f0e942d31b63bf2194692f791ba5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9210
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Météo-France - CNRS, CNRM, CEN, Saint-Martin-d'Hères, France
Recommended Citation:
Calonne N.,Flin F.,Lesaffre B.,et al. CellDyM: A room temperature operating cryogenic cell for the dynamic monitoring of snow metamorphism by time-lapse X-ray microtomography[J]. Geophysical Research Letters,2015-01-01,42(10).