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Collaborative research: Large-scale, long-term, multi-directional, cross-hole experiments in the upper oceanic crust using a borehole observatory network

Collaborative research: Large-scale, long-term, multi-directional, cross-hole experiments in the upper oceanic crust using a borehole observatory network
合作研究:利用钻孔观测网络在上洋地壳进行大规模、长期、多方向的跨孔实验
批准号:
0727952
负责人:
Andrew Fisher
金额:
$19.07万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2007
资助国家:
美国
项目状态:
已结题
起止时间:
2007-09-01 至 2011-08-31

项目摘要

项目成果

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中文摘要
翻译
PIS将在洋壳中进行多学科钻孔实验,以在多个空间和时间尺度(米到公里、秒到年)评估水文地质、溶质和胶体运移以及微生物过程和特性。这些实验的结果将是我们在理解洋壳内流体过程方面的重大进展,并将开发可在许多环境中应用的新工具和方法。该项目可能的地球化学亮点包括评估钻孔内和穿过钻孔的流体循环以及深层地层流体与浅层地层流体的混合程度(基于已部署在这些孔中的示踪剂的浓度和分布)、深层和浅层2基底储集层之间的组成差异,以及绘制将比热和压力反弹更慢的地球化学反弹,以用于未来的微生物和地球化学实验的评估。该奖项的基础将支持科学仪器的建设;这些活动包括:利用遥控潜水器安装、回收和更换长期仪器;从观测站系统收集海底和海底以下数据和样本;分析数据和样本;利用条件模拟对流体-热-溶质耦合运移进行数值模拟;对学生进行培训;介绍和发表结果。
英文摘要
The PIs will conduct multidisciplinary borehole experiments in oceanic crust, to assess hydrogeologic, solute and colloid transport, and microbiological processes and properties at multiple spatial and temporal scales (meters to kilometers, seconds to years). Results of these experiments will comprise a major advance in our understanding of fluid processes within oceanic crust, and will develop new tools and methods that can be applied in many settings.Possible geochemical highlights from this project include an assessment of fluid circulation within and through the boreholes and the extent of mixing of deep formation fluids with shallow formation fluids (based on the concentration and distribution of tracers that have been deployed in these holes), differences in the composition between deep and shallow 2 basement reservoirs, and mapping the geochemical rebound, which will be slower than the thermal and pressure rebound, for the future assessment of microbiological and geochemical experiments.Funding from this award will support construction of scientific instrumentation; emplacement, recovery and replacement of long-term instruments by remotely operated vehicle; collection of seafloor and subseafloor data and samples from observatory systems; analysis of data and samples; numerical modeling of coupled fluid-heat-solute transport using conditional simulation; training of students; and presentation and publication of results.
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