巻号一覧
47 巻 (2013)
- 4 号 p. 183-
- 3 号 p. 105-
- 2 号 p. 45-
- 1 号 p. 1-
47 巻, 3 号
日本地球化学会創立60周年記念号
選択された号の論文の12件中1～12を表示しています
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「地球化学」編集委員会（委員長 高橋嘉夫）2013 年 47 巻 3 号 p. A1-
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーPDF形式でダウンロード (174K) -
吉田 尚弘2013 年 47 巻 3 号 p. A2-A4
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーPDF形式でダウンロード (443K)
地球化学・温故知新
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野津 憲治2013 年 47 巻 3 号 p. 105-115
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーIt is often documented that geochemistry has been established in the West in early 1920s. Since the same period or earlier, books and literatures on the developing geochemistry have been imported to Japan. Jun-ichi Takahashi, who met Vernadsky in Paris in 1924 and later translated his textbook "La Géochimie" to Japanese language in 1933, has studied such imported publications and has used "Chikagaku" as a Japanese equivalent for "Geochimistry" since early 1920s. Separately, Yuji Shibata, who is respected as a founder of Japanese geochemistry, was inspired by Vernadsky's "La Géochimie" (1924) and contributed an article introducing geochemistry as a promising new discipline to a newspaper "Kokumin-Shinbun" in 1926. In this article, he coined "Chikyukagaku" as a Japanese equivalent for "Geochemistry". Since then, the term "Chikyukagaku" became popular in Japanese scientific community. Although Takahashi claimed that the Japanese equivalent for "Geochemistry" was not "Chikyukagaku" but "Chikagaku" in his review paper in 1929, it was too late. Finally, Takahashi had to change his mind to use "Chikyukagaku" on the title of the Japanese translation version (1933) of Vernadsky's "La Géochimie".抄録全体を表示PDF形式でダウンロード (8515K) -
長澤 宏2013 年 47 巻 3 号 p. 117-127
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーIn this article I am intending to describe how researchers proceeded geochemical works under limited availability of facilities, instruments etc. in ninety fifties and sixties when the after-effects of the war still continued: researchers were forced to separate minerals by handpicking, to make their vacuum systems by themselves with glass-blowing, to use mass-spectrometer designed for analysis of gas molecules for isotope analysis. Among the people I was acquainted with, Drs. Hitoshi Sakai, Akimasa Masuda and Naoki Onuma, all of them have already passed away, showed distinguished performances in studying geochemistry during that period. They overcame many difficulties by carefully choosing their main theme of study, and by elaborately designing the studying procedures. I will show some rarely-talk-about stories hidden under their published work. In addition to the stories about the work of the legendary researchers, I will show performances of some other researchers.抄録全体を表示PDF形式でダウンロード (10447K) -
和田 英太郎2013 年 47 巻 3 号 p. 129-138
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーMy life as an isotope scientist started in 1967, when the enrichment of 15N along a marine food chain in the western North Pacific Ocean was reported in my DS Dissertation. After 46 years, my newest paper which was published in March, 2013 concluded that the ratios of trophic fractionation of carbon and nitrogen isotopes (Δδ15N/Δδ13C) throughout marine and terrestrial food chains could be regarded to have similar correlation, expressed with the following linear regression line:δ15N=1.61δ13C+44.3+ [ecosystem specific constant].
with standard errors of [±0.41] and [±9.7] for the slope and the intercept, respectively. After this long journey of isotope research, I finally reached to a hypothesis on "ISOTOPICALLY ORDERED WORLD" with emphasis on amino acid synthesis, which I will describe in this article.
抄録全体を表示PDF形式でダウンロード (1343K) -
海老原 充2013 年 47 巻 3 号 p. 139-147
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーAfter finishing the Ph.D. course at University of Tokyo in 1979, I started my research carrier as a research associate to Professor Edward Anders at the Enrico Fermi Institute of University of Chicago. During a two and a half years stay in Chicago, I engaged in neutron activation analysis (NAA) of lunar samples and meteorites for the first half term and then switched the research subject to noble gas mass-spectrometry. Based on NAA of CI chondrites, two papers were published in 1982, one of which is focused on the elemental fractionation in CI chondrites. We confirmed two types of fractionation caused by either aqueous activity on the CI chondrite parent body or nebular processes (possibly condensation). Another paper was entitled "Solar-system abundances of the elements". Here, I reviewed these two papers and presented several significant characteristics observed in the elemental abundances of CI chondrites.抄録全体を表示PDF形式でダウンロード (1069K) -
杉崎 隆一2013 年 47 巻 3 号 p. 149-154
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーThere are two distinct points of view which might be called the ideal and realistic pictures of science: One appears to be concerned only with discovery and contemplation of truth. The other concerned with only its usefulness (practical application). Throughout any plan of scientific advance it would be necessary to keep a just proportion between fundamental and applied research and to maintain at all times the closest contact between them. In this paper the author presents three examples that show social function of geochemistry. One is the research providing the ground water pollution caused by civil engineering. The other is earthquake prediction by means of behavior of crustal gases erupted from mineral springs and active faults.抄録全体を表示PDF形式でダウンロード (835K)
30年後の地球化学
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丸山 茂穂2013 年 47 巻 3 号 p. 155-157
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーTo understand the origin and evolution of life and to predict the future of life is the ultimate goal of geochemistry that we need to reach. Here, I will show the history of geochemistry and future outlook on the Earth, the universe and Astrobiology.抄録全体を表示PDF形式でダウンロード (410K) -
鳥海 光弘2013 年 47 巻 3 号 p. 159-162
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーRecent investigations of geochemical processes in the earth's interior produce continuously huge amounts of various data. Many geological and geophysical processes can be investigated by recently developing data-driven machine learning methods to make realistic modeling combining geochemical, geological, geophysical, and seismological time series data. In this paper, the author tries to apply the dimension reduction using phase-reduction equation method for modeling the geochemical processes in the plate dynamics.抄録全体を表示PDF形式でダウンロード (425K) -
加藤 學2013 年 47 巻 3 号 p. 163-166
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーSample return from Mars must be carried out within future thirty years. Spacecrafts are sustainably sent to Mars to seek origin of life for these thirty years. Human Mars exploration is also considered as a final destination of human space exploration after completion of the International Space Station. International team is studying Mars sample return project as an international collaboration.抄録全体を表示PDF形式でダウンロード (3571K) -
荒井 章司2013 年 47 巻 3 号 p. 167-170
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリーWe seriously desire mantle drilling to observe and sample in-situ mantle materials. Our understanding of the mantle has been so limited because of our very limited access to the mantle materials, which inevitably lost mantle signatures. The mantle drilling should be performed on the ocean floor, especially of the Pacific, which shows a thin crust and the simplest geological context. All the signatures that are shown by the mantle peridotite obtained in the drilling are representative of mantle processes. The results will providea new standard for our understanding of the mantle: the mantle drilling will be really a window to the Earth's interior.抄録全体を表示PDF形式でダウンロード (568K)
2043年の仮想的「地球化学」誌
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田中 剛, 加藤 丈典, 蒲生 俊敬, 植松 光夫, 「地球化学」編集委員会2013 年 47 巻 3 号 p. 171-179
発行日: 2013/09/05
公開日: 2017/02/23
ジャーナル フリー本60周年記念号では，2043年の宇宙地球化学を予測し，こんな成果が生まれたら素晴らしい，ということを予想して頂き，それをまとめた想定論文の執筆を何人かの先生方に依頼した。最終的に以下に掲載の3つの想定論文をご執筆頂くことができた。これらは架空の内容ではあるが，一読するだけで30年後の地球化学に夢を馳せることができる内容になっている。同時に，30年後の日本や世界がどのようになっているかを思い描きながら，これらをお読み頂ければ幸いである。抄録全体を表示PDF形式でダウンロード (5391K)
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