Carbonate Compensation Dynamics in the Past and Future

过去和未来的碳酸盐补偿动态

• 批准号: 106084-2012
• 负责人: Boudreau, Bernard
• 金额: $ 2.77万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=507818
• 关键词: Carbonate; Compensation; Dynamics; Past; Future

My research program is undergoing a radical change of direction. From three decades of modelling processes in sediments, I have decided to focus on large scale ocean-related problems that impact our society. Specifically, I have chosen to start with predicting acidification of the oceans. The increased acidity is having and will have profound, largely negative, effects on the biology of the Oceans. The source of this acidity is the build-up of man-produced CO2 in the atmosphere and its subsequent adsorption by the Oceans. There is a natural neutralization process acting in the Oceans, called compensation, which involves dissolution of previously deposited calcium carbonate on the seafloor. However, the neutralization is out of synchronization with the input rate of acid. We need to understand better and more fully the mechanics of the neutralization and the time scales on which it will occur. It is the goal of my current research program to investigate and comprehend these mechanisms, including their time scales and their consequences to the earth's chemical environment.

我的研究项目正在经历一个彻底的方向改变。从三十年的沉积物建模过程中，我决定专注于影响我们社会的大规模海洋相关问题。具体来说，我选择从预测海洋酸化开始。酸度的增加正在并将对海洋生物产生深远的、主要是负面的影响。这种酸度的来源是大气中人为产生的二氧化碳的积累以及随后被海洋吸附。海洋中存在一种自然中和过程，称为补偿，它涉及到先前沉积在海底的碳酸钙的溶解。然而，中和与酸的输入速率不同步。我们需要更好和更全面地了解中和的机制以及中和发生的时间尺度。我目前的研究目标是调查和理解这些机制，包括它们的时间尺度和它们对地球化学环境的影响。