日本地球惑星科学連合2018年大会

講演情報

[EE] 口頭発表

セッション記号 B (地球生命科学) » B-PT 古生物学・古生態学

[B-PT04] バイオミネラリゼーションと環境指標

2018年5月20日(日) 15:30 〜 17:00 101 (幕張メッセ国際会議場 1F)

コンビーナ:豊福 高志(国立研究開発法人海洋研究開発機構)、北里 洋(国立大学法人東京海洋大学)、Bijma Jelle(アルフレッドウェゲナー極域海洋研究所、共同)、廣瀬 孝太郎(早稲田大学  大学院創造理工学研究科 地球・環境資源理工学専攻)、座長:廣瀬 孝太郎(早稲田大学 大学院創造理工学研究科 地球・環境資源理工学専攻)、豊福 高志

16:00 〜 16:25

[BPT04-09] Mathematical models for the isotopic composition of foraminiferal calcium carbonate

★Invited Papers

*Wolf-Gladrow Dieter1 (1.Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research)

キーワード:numerical models, isotope, foraminifer

The isotopic compositions (δ11B, δ13C, δ18O) of foraminiferal calcium carbonate are used as paleo-proxies for pH, biological production, temperature or ice-volume. However, in order to interpret the observed isotopic values, one needs a process-based (`mechanistic´) understanding of the generation the proxy data. For this purpose, mathematical models have been developed. Because of missing detailed information about various processes involved in biomineralization these models were somewhat speculative despite their formulation based on physical and chemical principles. Application of these models in the framework of paleoceanographic simulations (generation of `simulated sediment cores´) can be used to test these models. I will discuss limitations of the models, open questions, and possible further developments.