Marine Sediment Sampling Facility (MARSSAM) Oceanographic Instrumentation: Acquisition of a Seagoing Sediment CT-Scanning System

该提案寻求为俄勒冈州立大学海洋沉积物采样设备(MARSSAM)购买海洋计算机断层扫描(CT)扫描系统的资金，该设备支持整个美国学术研究舰队(ARF)的NSF取心计划。他们计划购买的系统是GeoTek垂直X射线CT扫描仪(VXCT)，占地面积很小，可以安装在集装箱化的实验室中，以便在许多ARF平台上部署。该扫描仪可以在350至30微米的分辨率下采集垂直方向上长达150厘米的岩芯的三维图像，从而能够保存沉积物水界面。全长岩心切片可以在短短40分钟内以微米的分辨率进行扫描，从而使数据收集的速度符合海运沉积物岩心计算机断层扫描仪上岩心处理的流程611,799美元更广泛的影响本提案的主要影响是根据提案指南(NSF19-602)的优点审查标准2。它为科学家提供基础设施支持，以使用该船及其共享仪器，以支持他们由NSF资助的海洋研究项目(这些项目单独接受NSF相关研究计划的单独审查)。共享仪器的获取、维护和操作允许美国国家科学基金会资助的任何美国大学或实验室的研究人员获得用于其研究的工作、校准的仪器，从而降低研究成本，并扩大潜在研究人员的基础。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

This proposal seeks funds for acquisition of a seagoing computed tomography (CT)-scanning system for the Oregon State University Marine Sediment Sampling Facility (MARSSAM), which supports NSF coring programs across the United State Academic Research Fleet (ARF). The system they propose to acquire, a GeoTek Vertical X-ray CT-scanner (VXCT) has a small footprint allowing it to be installed in a containerized lab for deployment aboard many of the ARF platforms. The scanner can collect three-dimensional images at resolutions of between 350 and 30 microns for cores of up to 150 cm in length in a vertical orientation, allowing for preservation of the sediment water interface. Full-length core sections can be scanned in as little as 40 minutes at 64-micron resolution, allowing for data collection at a pace that falls within the flow of core processing aboard the shipSeagoing Sediment Core Computed Tomography Scanner $611,799 Broader ImpactsThe principal impact of the present proposal is under Merit Review Criterion 2 of the Proposal Guidelines (NSF 19-602). It provides infrastructure support for scientists to use the vessel and its shared-use instrumentation in support of their NSF-funded oceanographic research projects (which individually undergo separate review by the relevant research program of NSF). The acquisition, maintenance and operation of shared-use instrumentation allows NSF-funded researchers from any US university or lab access to working, calibrated instruments for their research, reducing the cost of that research, and expanding the base of potential researchers.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.