Installation of the superconducting gravimeter CT(#043) at Syowa Station, Antarctica

• Main Authors: Ikeda, Hiroshi, Doi, Koichiro, Fukuda, Yoichi, Tamura, Yoshiaki, Shibuya, Kazuo
• Language: English
• Published: National Institute of Polar Research 2005
• Subjects: superconducting gravimeter; GM refrigerator; diaphragm; monitoring system; Syowa Station; Antarctic; Dewar; Antarc*; Antarctica; Polar geoscience
• Online Access: https://nipr.repo.nii.ac.jp/record/3149/files/KJ00003562990.pdf; https://doi.org/10.15094/00003149; https://nipr.repo.nii.ac.jp/records/3149

P(論文) During the wintering period of the 44th Japanese Antarctic Research Expedition (JARE-44: February 2003 to January 2004), a new superconducting gravimeter CT(#043) with a cryocooler was installed and tested to replace the former TT70(#016) at Syowa Station, Antarctica. The CT(#043) has design sensitivity of 1nGal (1×10^(-11)m/s^2) to study the Earth's dynamics in tidal and longer-period bands. A new type of diaphragm was used to effectively isolate the vibration from the refrigerator cold-head and to prevent solid air contamination from entering the Dewar. A real-time remote monitoring system including a Web camera for diagnostics from Japan has also been installed. departmental bulletin paper