Iodine Dating Of Pore Waters And Sediments Associated With Gas Hydrates In The Nankai Trough

天然气水合物作为一种潜在资源很重要，也因为它们可能对气候和全球碳循环产生影响。他们的形成是众所周知的，但他们的来源(S)还不是很清楚。一项初步研究表明，与天然气水合物伴生的孔隙水具有较高的卤素含量，使129I(AMS)测年成为可能。这项提议的想法是确定孔隙水的年代，并利用它们和沉积物的化学成分来开始解开甲烷水合物的来源。日本合作者将提供与这项研究相关的样本和数据。在这项提案中，PI请求支持在普渡大学进行的样品制备(罗切斯特)和AMS测年。

Gas hydrates are important as a potential resource, and also because of their possible influence on climate and the global carbon cycle. Their formation is well understood, but their source(s) is not. Pore waters associated with gas hydrates have elevated halogen content, making dating by 129I (AMS) feasible, as has been shown by a pilot study. The idea of this proposal is to date the pore waters and to use their chemistry and that of the sediments to begin to unravel the origin of methane hydrates. Japanese collaborators will provide samples and data relevant to the study. In this proposal, the PI requests support for the sample preparation (Rochester) and AMS dating to be done at Purdue Univ.