日本地球惑星科学連合2014年大会

講演情報

ポスター発表

セッション記号 A (大気海洋・環境科学) » A-CG 大気海洋・環境科学複合領域・一般

[A-CG35_28PO1] 陸海相互作用-沿岸生態系に果たす水・物質循環の役割-

2014年4月28日(月) 18:15 〜 19:30 3階ポスター会場 (3F)

コンビーナ:*山田 誠(総合地球環境学研究所)、谷口 真人(総合地球環境学研究所)、杉本 亮(福井県立大学海洋生物資源学部)、小野 昌彦(産業技術総合研究所)

18:15 〜 19:30

[ACG35-P03] 沿岸域における海底湧水と一次生産過程の同時モニタリング手法の開発

*杉本 亮1大河内 允基1本田 尚美1小路 淳2大沢 信二3谷口 真人4 (1.福井県立大学、2.広島大学、3.京都大学、4.総合地球環境学研究所)

キーワード:同時モニタリング, 海底湧水, 一次生産, 沿岸海域

In recent years, a number of studies have shown that submarine groundwater discharge is an alternative nutrient pathway and can drive primary production in coastal seas. However, very little is known about quantitative relationship between input of groundwater and response of primary production, because both processes are temporally variable. Recent technological advances (i.e., automation) have increased our ability to assess submarine groundwater discharge in coastal ecosystems using natural tracers such as radon-222 (222Rn). Simultaneous monitoring of 222Rn with indicators of primary production such as pCO2 and/or chlorophyll-a would allow us to grasp the nexus of both processes. Therefore, automated radon and CO2 gas analyzer were connected in series and a closed air loop was established with gas equilibration devices to examine the nexus between submarine groundwater discharge and primary production. In this presentation, we will report the results of simultaneous monitoring of 222Rn and pCO2 with other parameters in several coastal environments.