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Title: 潜水調査船用多連式ガスタイト海底湧水採取装置の開発
Other Titles: WHATS : a new multi-bottle gas-tight sampler for sea-floor vent fluids
Authors: 角皆, 潤1 Browse this author →KAKEN DB
土岐, 知弘2 Browse this author →KAKEN DB
中山, 典子3 Browse this author →KAKEN DB
蒲生, 俊敬4 Browse this author →KAKEN DB
加藤, 博之5 Browse this author →KAKEN DB
金子, 将6 Browse this author
Authors(alt): Tsunogai, Urumu1
Toki, Tomohiro2
Nakayama, Noriko3
Gamo, Toshitaka4
Kato, Hiroyuki5
Kaneko, Sho6
Keywords: WHATS
fluid sampler
gas sampler
hydrothermal and cold seep fluid
handling pressured sample
Issue Date: 1-Aug-2003
Publisher: 日本地球化学会
Journal Title: 地球化学
Journal Title(alt): Chikyukagaku (Geochemistry)
Volume: 37
Issue: 3
Start Page: 101
End Page: 109
Abstract: We report a newly developed water sampler WHATS (Water and Hydrothermal-fluid Atsuryoku Tight Sampler), for collecting seafloor venting gas-rich fluid (or gas itself) at in situ pressure (Atsuryoku means pressure in Japanese). It consist of four 150 cm3 stainless steel sample cylinders, eight ball valves, a motor-driven arm, a rail, a peristaltic pump, and a flexible Teflon tube connected to a titanium inlet tube. The motor-driven arm on the rail can open one of the four cylinders. Then, by pumping out pure water that has filled the cylinder, we can introduce sample fluid into the cylinder. After completely replacing the pure water with sample fluid, the valves at both ends of the cylinder are tightly closed by moving the motor-driven arm again. At this stage, the next cylinder becomes to be ready for next sampling. We can take maximum 4 different gas-tight samples in series. Whole operation can be arranged inside the submersible cabin. Use of only one motor to operate valves makes the sampler small, light (28 kg in water), and easy to handle. With the sampler, we can collect almost uncontaminated sample because we pump fluid slowly (120 cm3/min.) into the cylinder using the peristaltic pump. To date, the sampler has been used for ca. 40 dives of shinkai 2000 and shinkai 6500 with the success rate of more the 90%. We also evaluate the safety factors in handling highly pressured samples. We conclude that the sampler can be used to the depth of 3,000 m.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 角皆 潤

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