Acquisition of Thermal and Alternating Field Demagnetizers

9902723通道这笔赠款部分用于支付购置设备的费用，以升级佛罗里达大学地质系的古地磁实验室。具体的设备将包括一个交变场（AF）消磁器和一个热消磁器。佛罗里达大学古地磁实验室配备了u型通道超导岩石磁力计（SRM）和专门用于分析离散样品的SRM。在美国，目前只有加州大学戴维斯分校（Verosub）和夏威夷大学（herrero - bervera）两个实验室在使用u通道仪器。PI的channel和Opdyke利用他们的快速通量u通道SRM分析长，高分辨率的古地磁记录，研究磁地层学和地磁场的长期变化。一个新的AF消磁器将取代不再支持的Schonstedt AF消磁器，一个60个样品容量的热消磁器将用于大型合作项目中通过Thellier-Thellier方法进行古强度分析，以表征上新世至今地磁场的长期变化。这个项目需要一个大型的野外采样项目，沿着南北样带从北极到南极洲，沿着美洲。＊＊＊

9902723ChannellThis grant provides partial support for the costs of acquiring equipment to upgrade the paleomagnetics laboratory in the Department of Geology at the University of Florida (UF). Specific equipment will include an alternating field (AF) demagnetizer and a thermal demagnetizer. The UF paleomag lab is well equipped with both a u-channel superconducting rock magnetometer (SRM) and an SRM dedicated to the analysis of discrete samples. In the U.S., only two other laboratories currently operate u-channel instruments, the University of California Davis (Verosub) and the University of Hawaii (Herrerro-Bervera). PI's Channell and Opdyke utilize their rapid throughput u-channel SRM for analysis of long, high resolution paleomagnetic records in studies of magnetostratigraphy and secular variation of the geomagnetic field. A new AF demagnetizer will replace a no longer supported Schonstedt AF demagnetizer and a 60 sample capacity thermal demagnetizer will be used for paleointensity analyses via the Thellier-Thellier method in large collaborative project to characterize secular variation of the geomagnetic field from the Pliocene to present. This project entails a large field sampling program along a north-south transect from the Arctic to Antarctica along the Americas. ***