Past 30-year pH record in a firm core from the Brust Ice Shelf, Antarctica, and its relationship to volcanic events

• Main Author: Yoshiyuki Fujii
• Format: Report
• Language: English
• Published: National Institute of Polar Research 1983
• Subjects: Brunt Ice Shelf; Antarc*; Antarctica; Ice Shelf; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1512; http://id.nii.ac.jp/1291/00001512/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1512&item_no=1&attribute_id=18&file_no=1

A pH profile along a well-dated firn core from the Brunt Ice Shelf near Halley Base, Antarctica, was obtained spanning the last 30 years, from 1951/1952 to the present. Especial emphasis is paid to the summer decrease in the seasonal variation and to the extremely low pH values in some summers between 1955/1956 and 1970/1971,and in 1980/1981. Comparison with Lamb's volcanic dust veil indices up to 1968 and to major volcanic events after 1969 suggests that the significant decrease of pH in some summers is linked with major volcanic eruptions in the equatorial zone and to major and even minor ones in the Southern Hemisphere.