Antarctic micrometeorite collection at a bare ice region near Syowa Station by JARE-41 in 2000

• Main Authors: Iwata, Naoyoshi, Imae, Naoya
• Format: Report
• Language: English
• Published: Department of Earth and Environmental Sciences, Faculty of Science, Yamagata University/Antarctic Meteorite Research Center, National Institute of Polar Research 2002
• Subjects: Antarctic; Austral; Syowa Station; Antarc*
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6009; http://id.nii.ac.jp/1291/00006009/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6009&item_no=1&attribute_id=18&file_no=1

We collected Antarctic Micrometeorites (AMMs) at a bare ice field near Syowa Station in the austral fall and spring seasons of 2000. The facility for the AMMs collection introduced by the 39th Japanese Antarctic Research Expedition (JARE-39) was improved to increase the filtering rate of the melt water. The filtering rate became 4-5 times quicker than the previous system, ∿1000 liter/hour, by the addition of a new water pump in parallel with the previous pump. About 50 tons of melt water were formed, of which about 40 tons were filtered using this new system, and 18 holes were made in the bare ice region in 23 days. We obtained particles in which abundant micrometeorites should be included.