Suboxic Diagenesis in Reef Frameworks

珊瑚礁框架中的缺氧成岩作用

• 批准号: 9504251
• 负责人: Francis Sansone
• 金额: $ 19.7万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-15 至 1999-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9504251&HistoricalAwards=false
• 关键词: Suboxic; Diagenesis; Reef; Frameworks

9504251 SANSONE This team of investigators will study the biogeochemical processes associated with the decomposition of organic matter within (approximately) the upper framework of a coral reef just offshore of Oahu, Hawaii. Particulate and dissolved organic matter originating at or near the reef surface is hydraulically transported into this upper part of the reef where organic moieties are broken down in a suboxic or anoxic environment by heterotrophic bacteria. These studies should lead to a better understanding of nutrient cycling in coral reef ecosystems in many part of the world ocean. Also, because the suboxic reef environment is vertically extensive (about 1 meter deep), this system will afford the opportunity for detailed proxy study of suboxic decomposition processes that are common in other benthic environments, such as soft sediments, but which cannot be carried out in the latter because of the small spatial scale (typically several millimeters).

小行星9504251 这组调查人员将研究与夏威夷奥伯斯近海珊瑚礁上部框架内（大约）有机物分解有关的地球化学过程。源自礁石表面或附近的颗粒和溶解有机物通过水力输送到礁石的上部，在那里有机部分在亚氧或缺氧环境中被异养细菌分解。这些研究应有助于更好地了解世界海洋许多地区珊瑚礁生态系统的营养循环。此外，由于亚氧珊瑚礁环境在垂直方向上很广（约1米深），这一系统将提供机会，对其他底栖环境（如软沉积物）中常见的亚氧分解过程进行详细的替代研究，但由于空间尺度小（通常为几毫米），无法在软沉积物中进行。