MRI:  Acquisition of a gamma-ray spectrometer for surface-process and ocean research

GSTDTAP

项目编号	1828314
	MRI: Acquisition of a gamma-ray spectrometer for surface-process and ocean research
	Jane Willenbring
主持机构	University of California-San Diego Scripps Inst of Oceanography
项目开始年	2018
	2018-09-15
项目结束日期	2019-08-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	118947(USD)
国家	美国
语种	英语
英文摘要	Maintenance of soil is critically important for sustaining the world's growing population. Eroded surface sediment can also be a major pollutant degrading aquatic ecosystems worldwide through light attenuation and heavy-metal contamination. This instrumentation grant will add to sediment mobility research through the measurement of decay products from naturally produced radioactive isotopes adsorbed to sediment. This instrument will help build a foundation for efforts to (1) create new datasets, (2) enhance infrastructure for interdisciplinary, collaborative research, and (3) train a diverse workforce capable of tackling society's environmental challenges through student training. Education impacts of this grant include the incorporation of the instrument into a new course and undergraduate student research projects through the NSF-funded Research Experience for Undergraduates program at Scripps Institution of Oceanography, UC San Diego. Measurement of fallout radionuclides provide a means to measure rates of surficial processes. Specifically, the short-lived beryllium nuclide 7Be can be used to understand the chemically similar 10Be radionuclide commonly used in surface-process research but typically only measured by more expensive accelerator mass spectrometry. Detection of the abundant short-lived beryllium radionuclide (7Be) via acquisition of a Canberra/Mirion U-Style Cryostat Small Anode Germanium (SAGe) Well Detector System will facilitate research into the mobility of cosmogenic 10Be and the adsorption behavior of 9Be, which is a toxic pollutant. The acquisition of this instrument will drive scientific research (some already NSF-funded) and innovation and cultivate interdisciplinary collaborations among researchers studying low-temperature geochemistry, marine geoscience, ecology, archaeology, and Earth-surface dynamics. 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.
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/73427
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Jane Willenbring.MRI: Acquisition of a gamma-ray spectrometer for surface-process and ocean research.2018.