AIR BUBBLE FORMATION PROCESS OBSERVED IN THE G6 ANTARCTIC ICE CORE

• Main Authors: ミタニ アタウ, ショウジ ヒトシ, フジイ ヨシユキ, Atau MITANI, Hitoshi SHOJI, Yoshiyuki FUJII
• Format: Report
• Language: English
• Published: Faculty of Science, Toyama University 1992
• Subjects: Antarctic; Antarc*; Antarctica; ice core; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3708; http://id.nii.ac.jp/1291/00003708/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3708&item_no=1&attribute_id=18&file_no=1

Air bubble formation processes were investigated on a 100m-long ice core from G6,Antarctica (73°07'S, 39°46'E). The observational results revealed clearly the five-stage process of air bubble entrapment. The pore space was closed off at a depth of 72m, which leads to about 470 years age difference between air bubbles and the ice estimated under an assumption of 9cm of ice/year for the accumulation rate.