2011 Fiscal Year Final Research Report

Crystal structure study of ice from the Dome Fuji ice core by the X-ray diffraction reciprocal mapping measurements

Research Project

Project/Area Number	21560004
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Applied materials science/Crystal engineering
Research Institution	Kitami Institute of Technology
Principal Investigator	HORI Akira 北見工業大学, 工学部, 准教授 (60280856)
Co-Investigator(Renkei-kenkyūsha)	MIYAMOTO Atushi 北海道大学, 低温科学研究所, 博士研究員 (00374645)
Project Period (FY)	2009 – 2011
Keywords	氷床コア / 氷 / X線回折 / 逆格子マップ / 結晶組織 / 転位密度 / 格子定数
Research Abstract	X-ray diffraction reciprocal space mapping measurements were conducted to investigate the crystal structure of ice of the Dome Fuji ice core. The broadening of the rocking curve of the ice crystals was caused by the dislocations introduced during the ice sheet flow. The dislocation density decrease with the increasing depth. The lattice constant c of ice is larger than that of the laboratory ice and decreases with the increasing depth while the lattice constant a is only slightly larger than that of the laboratory and increases a little with the increasing depth. These can be attributed to micro bubbles in the ice samples.

(3 results)