Ice Fabric Studies on a 75m-Long Core Drilled at Mizuho Camp, East Antarctica

A 75m-long snow/ice core was drilled at Mizuho Camp, East Antarctica, by the glaciological members of the 12th Japanese Antarctic Research Expedition (1971-1972), and its density and the orientations of the c-axes of crystal grains composing it were measured immediately after recovery. It was found...

Full description

Bibliographic Details
Main Author: Masayoshi NAKAWO
Format: Article in Journal/Newspaper
Language:English
Japanese
Published: National Institute of Polar Research 1974
Subjects:
Online Access:https://doi.org/10.15094/00007761
https://doaj.org/article/797d93a48ca04f6fbe12532fdb6e40c1
Description
Summary:A 75m-long snow/ice core was drilled at Mizuho Camp, East Antarctica, by the glaciological members of the 12th Japanese Antarctic Research Expedition (1971-1972), and its density and the orientations of the c-axes of crystal grains composing it were measured immediately after recovery. It was found that the density increased with the depth, but that the average grain size was almost constant down to about 35m, at which depth it began to show a sharp increase. At depths shallower than 35 m the directions of the c-axis were almost vertical, while the fabric patterns for the samples deeper than 35 m showed a so-called girdle pattern.