Acquisition of a Superconducting Rock Magnetometer and a Field Free Room

购置超导岩石磁力计和无场室

• 批准号: 9810773
• 负责人: Jimmy Diehl
• 金额: $ 12.9万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-15 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9810773&HistoricalAwards=false
• 关键词: Acquisition; Superconducting; Rock; Magnetometer; Field

9810773 Diehl This grant provides partial support of the costs of acquiring a superconducting rock magnetometer (SRM) and field-free room for the paleomagnetics laboratory at Michigan Technological University (MTU). The SRM will replace their present spinner magnetometer that is besieged with problems and cannot be used to reliably measure weakly magnetized samples. The field free room will optimize the performance of the SRM while eliminating the acquisition of laboratory-induced viscous magnetization during storage and transfer of the samples. The addition of a SRM at MTU will allow rapid analyses of weakly magnetized sediments as well as more strongly magnetized igneous rocks. Some of the current projects that will benefit from the acquisition of the SRM include: (1) studies of the magnetic properties of volcanic ash as an aid in tephra correlation and as indicators of atmospheric fractionation, (2) the reconstruction of upper Pleistocene and Holocene paleoenvironments from cave sediments in the Moravian Karst, Czech Republic and, (3) investigations into the rates of movement along the Hilina Fault System on south flank of Kilauea Volcano, Hawaii. Future projects that will be made possible with the acquisition of the SRM include the following: (1) an investigation into the timing of the unconformity that separates Permian rocks from Triassic rocks in southwestern Utah, (2) investigations into regional climate changes since the last glaciation derived from magnetic properties of lake cores from the Keweenaw Peninsula, and (3) historical studies of the Keweenaw current based on secular variation and correlation of Lake Superior sediments. ***

小行星9810773 这笔赠款提供了部分支持的成本收购超导岩石磁强计（SRM）和无场室的古地磁实验室在密歇根理工大学（MTU）。 SRM将取代他们目前的旋转磁力计，该磁力计存在问题，不能用于可靠地测量弱磁化样品。 无场室将优化SRM的性能，同时消除在样品的储存和转移期间实验室诱导的粘性磁化的获得。 在MTU增加SRM将允许对弱磁化沉积物以及更强磁化火成岩进行快速分析。 一些将从收购SRM中受益的当前项目包括：（1）研究火山灰的磁性，作为火山灰对比的辅助手段和大气分馏的指标，（2）根据捷克共和国摩拉维亚喀斯特洞穴沉积物重建上更新世和全新世古环境，（3）研究了夏威夷基拉韦厄火山南翼Hilina断裂系沿着运动速率。 通过收购SRM，未来的项目将包括以下内容：（1）对犹他州西南部二叠纪岩石与三叠纪岩石之间的不整合的时间进行了调查，（2）根据基韦诺半岛湖芯的磁性对末次冰期以来区域气候变化进行了调查，（3）基于苏必利尔湖上级沉积物长期变化和对比的基威诺海流历史研究。 ***