Upgrade of Spinner Magnetometer for Continuing and New Paleomagnetic Research Objectives at Tufts University

塔夫茨大学升级旋转磁力计以实现持续和新的古地磁研究目标

• 批准号: 1934221
• 负责人: John Ridge
• 金额: $ 5.25万
• 依托单位: Tufts University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-03-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1934221&HistoricalAwards=false
• 关键词: Upgrade; Spinner; Magnetometer; Continuing; New

This Division of Earth Sciences Instrumentation and Facilities Program award supports acquisition of an Agico JR-6 Dual Speed Spinner Magnetometer to measure magnetism in oriented geological samples at Tufts University. The instrument would replace a 32-year old and no longer functional magnetometer. The magnetometer measures: polarity, which varies between a normal polarity, like the present Earth’s field, and a reversed field in which magnetic directions are flipped 180 degrees from today’s field; magnetic declination, which is a measurement of how the field direction differs from true north; and magnetic inclination, which is the dip away from horizontal of Earth’s magnetic field direction at any given place. Time varying magnetic signature of rocks and sediments are used for correlation and age dating. Student training in paleomagnetic methods and research applications will be advanced with the acquisition and the investigator plans local outreach through guided field trips and production of educational materials targeted at K-12 teachers and students to advance awareness of the Earth’s magnetic field and its time varying dynamic behavior.Research projects that will immediately benefit from the new magnetometer include study of: the chronology and spatial distribution of glacial varve deposition in New England and by inference the history and mechanisms of Quaternary glacial activity in the region; the tectonic and paleogeographic history of Neoproterozoic rocks of the Avalon terrane; the pre-Wisconsinan glacial history of New England based on determination of the chronology of subglacial till and intra-till lake deposits.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.

这项地球科学仪器仪器设施计划奖支持收购Agico JR-6双速旋转器磁力计，以测量塔夫茨大学定向地质样品中的磁性。该仪器将替代32岁且不再功能磁力计。磁力计测量：极性在正常极性（如当前地球场）之间有所不同，而磁性方向从当今的田地上倾斜了180度；磁决策，这是对田间方向与真实北部的不同之处的测量。和磁性倾斜度，这是远离任何给定位置的地球磁场方向水平的倾斜。岩石和沉积物的时间变化的磁性特征用于相关性和年龄。 Student training in paleomagnetic methods and research applications will be advanced with the acquisition and the investigator plans local outreach through guided field trips and production of educational materials targeted at K-12 teachers and students to advance awareness of the Earth’s magnetic field and its time varying dynamic behavior.Research projects that will immediately benefit from the new magnetometer include study of: the chronology and spatial distribution of glacial varve deposition in New England and by inference the history and该地区第四纪冰川活性的机制；阿瓦隆地座的新元古代岩石的构造和古地理历史；新英格兰的威斯康星州冰川历史基于确定底线下和内部湖泊沉积物的年表。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛的影响审查标准通过评估来评估的。