A SMALL STRATOSPHERIC GRAB-SAMPLER AND ITS GROUND SUPPORT SYSTEM FOR ANTARCTIC EXPERIMENTS

元データ 国立極地研究所

概要

In order to measure the concentrations of various minor constituents and their isotopic ratios in the stratosphere over Antarctica, a simple grab sampling system was newly developed. The sampling system was designed to be launched by a small number of personnel under severe experimental conditions. Special attention was paid to minimize the contamination of sample air, as well as to allow easy handling of the system. The sampler consisted mainly of a 15l sample container with electromagnetic and manual valves, control electronics for executing the air sampling procedures and sending the position and status information of the sampler to the ground station, batteries and transmitter. All these parts were assembled in an aluminum frame gondola with a shock absorbing system for landing on sea ice. The sampler was equipped with a turn-over mechanism of the gondola to minimize contamination from materials in the gondola, as well as with a GPS receiver and a Rawinsonde for its tracking. Total weight of the sampler was about 11kg. The sampler was designed to launch using a 4.5-kg rubber balloon because of its easy handling and inflation operation compared with a plastic one. A cross parachute was used for its stable descending characteristics so that the shock absorber functioned properly at landing. To receive, display and store the position and status data of the sampling system at the ground station, a simple data acquisition system, with a portable receiver, a demodulator and a microcomputer, was also developed. A new gas handling system and procedures were prepared to simplify the injection of He gas into the balloon and the measurement of its lift. For recovery, two helicopters and conventional beacon searching systems were used; they were confirmed to work well in the recovery tests of the JARE 36th operations.

著者

Tanaka Yoichi Geosystems Inc.
張 紀久夫 阪大基:福井工大工
Morimoto S National Institute Of Polar Research Organization Of Information And Systems
Hashida Gen National Institute Of Polar Research
Nakazawa Takakiyo Center for Atmospheric and Oceanic Studies, Tohoku University
Aoki Shuhji Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
Morimoto Shinji National Institute of Polar Research
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Aoki Shuji Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
AOKI Shuhji National Institute of Polar Research
Aoki Shuhji Center For Atmospheric And Oceanic Studies Faculty Of Science Tohoku University
Yamanouchi Takashi National Institute For Polar Research
Morimoto S National Inst. Polar Res. Tokyo Jpn
清水 明 東大教養
Aoki Shuhji Faculty Of Science Tohoku University
清水 明 東大院総合文化・科技団
Mae S National Institute Of Polar Research Research Organization Of Information And Systems
HONDA Hideyuki The Institute of Space and Astronautical Science
YAJIMA Nobuyuki The Institute of Space and Astronautical Science
AKIYAMA Hiromitsu The Institute of Space and Astronautical Science
Mae Shinji Department Of Applied Physics Hokkaido University
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
Nakazawa Takakiyo Center For Atmospheric And Oceanic Studies Faculty Of Science
Murayama Syohei National Institute For Resources And Environment
清水 明 Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Yajima Nobuyuki Graduate School Of Biostudies And Institute For Virus Research Kyoto University
Nakazawa T Center For Atmospheric And Oceanic Studies Faculty Of Science
Yamada T Geosystems Inc.
Yamanouchi Takashi National Inst. Of Polar Res. And Dep. Of Polar Sci. The Graduate Univ. For Advanced Studies 10-3 Mid
Yamanouchi Takashi National Institute Of Polar Research 10-3 Midoricho Tachikawa Tokyo Japan.
Mae Shinji National Institute For Resources And Environment
Morimoto Shinji National Institute For Resources And Environment
Yamada Tomomi Geosystems Inc.
SHIMIZU Akira Deparment of Physics, Rikkyo University

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