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Volume 59 (2021)
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Volume 59, Issue 1
Displaying 1-9 of 9 articles from this issue
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Original Article
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Michio Nogami2021 Volume 59 Issue 1 Pages 1-10
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSIno observed celestial bodies at about 1220 sites to measure latitudes. These sites are illustrated by star marks on his map of 1:216000. I read 135 coordinates of the sites on the map and corresponding latitudes-longitudes on actual map of Geographical Survey Institute. Using these data， I analyzed map projection method by which the surveyed results were plotted on the map sheet. He applied an equidistant orthogonal coordinate system not only for 1/36000 map but also for 1/216000 map. Therefore or consequently, any vertical lines at right angle to the straight latitude line are not the meridians. The increase rate of longitude on the vertical line should be expressed by 1/cos(latitude).
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Materials
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Junko SUZUKI, Yoshihisa HOSHINO, Keita Arai, Hiroshi OTA, Hirotada Kaw ...2021 Volume 59 Issue 1 Pages 11-14
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (1622K)
Explanation of Attached Map
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Koichi YOKOMIZO2021 Volume 59 Issue 1 Pages 15-18
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
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Essays / Opinions
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Hiroshi MITSUHASHI2021 Volume 59 Issue 1 Pages 26-27
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
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New Publication Reviews
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[in Japanese]2021 Volume 59 Issue 1 Pages 28
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (1279K) -
[in Japanese]2021 Volume 59 Issue 1 Pages 29
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (1248K) -
[in Japanese]2021 Volume 59 Issue 1 Pages 30
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (1224K) -
[in Japanese]2021 Volume 59 Issue 1 Pages 31
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (1225K)
Attached Map
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2021 Volume 59 Issue 1 Pages AP1
Published: March 31, 2021
Released on J-STAGE: August 20, 2022
JOURNAL FREE ACCESSDownload PDF (2107K)
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