Acquisition of a Cryogenic Magnetometer

9520528布朗过去二十年来，马萨诸塞大学古地磁实验室一直在进行研究，其重点是研究地球磁场的古长期变化和利用古磁学解决地质问题。目前和过去的研究都是使用旋转磁力计进行测量的。随着古长期变化和构造研究所需的样品数量的增加，以及当前标准要求的详细退磁步骤，诸如此类的测量是一个漫长的过程。这笔拨款为购买低温磁力计提供资金，该磁力计将允许对弱磁化沉积物样品进行精确处理，并从根本上减少测量时间。马萨诸塞大学活跃的第四纪研究小组现在将拥有一个古地磁实验室，能够对近期沉积物的古长期变化研究和弱磁化材料的古气候研究进行竞争性研究。新仪器也将使一个更大的、由来自阿默斯特、汉普郡、霍利奥克山和史密斯以及主办机构的教师组成的五所学院的第四纪研究小组受益。＊＊＊

9520528 Brown Research in the Paleomagnetic Laboratory at the University of Massachusetts has been underway for the last twenty years, with emphasis on studies of the paleosecular variation of the Earth's magnetic field and on the solution of geologic problems using paleo-magnetism. Current and past research have been done using measurements from a spinner magnetometer. With the increasing numbers of samples needed for both paleosecular variation and tectonic studies, and the detailed demagnetization steps required with current standards, measurements such as these are a lengthy process. This grant provide funds for the acquisition of a cryogenic magnetometer that will allow for the accurate processing of weakly magnetized sediment samples, as well as radically decrease measurement times. The active Quaternary research group at the University of Massachusetts will now have a paleomagnetic laboratory that is capable of competitive research into paleosecular variation studies on recent sediments and paleoclimatic studies of weakly magnetized materials. The new instrument will also benefit a larger, five-college Quaternary Research Group composed of faculty from Amherst, Hampshire, Mount Holyoke and Smith as well as the host institution. ***