Technician Support for the Noble Gas Geochemistry Lab at Caltech

小行星9707119法利 这笔赠款提供了149，996美元，作为一名技术人员三年的部分工资支持，以监督操作和维护，并为加州理工学院惰性气体地球化学实验室的新用户提供培训。该设施增加了一名熟练的技术人员，将使PI能够继续开发利用稀有气体地球化学来阐明地球科学中基本问题的新颖和令人兴奋的技术。 迄今为止，PI的成就的具体例子包括，PI的磷灰石氦热年代学的发展。 该技术利用已知的扩散率4He从磷灰石中的铀和钍系列核素的衰变来约束冷却历史。 此外，PI发现了地外氦到海底沉积物的通量与全球气候和动物群变化之间的相关性，这对我们理解地球气候与地外因素之间的联系具有潜在意义。 ***

9707119 Farley This grant provides $149,996 as three years partial salary support for a technician to oversee operation and maintenance and to provide training to new users of the Caltech Noble gas geochemistry laboratory. The addition of a skilled technician to this facility will allow the PI to continue development of novel and exciting techniques utilizing rare gas geochemistry to elucidate fundamental problems in the Earth sciences. Specific examples of the PI's accomplishments to date include, the PI's development of apatite helium thermochronology. This technique utilizes known diffusional rates of 4He from decay of uranium and thorium series nuclides in apatite to constrain cooling histories. Additionally, the PI's discovery of correlations between the flux of extraterrestrial helium to seafloor sediments and global climate and faunal changes are potentially significant for our understanding of the linkages between the Earth's climate and extraterrestrial factors. ***