Aquisition of a fine thermal demagnetizer and AC susceptibility system for paleomagnetic and rock-magnetic studies

研究地球过去的磁场（古强度）作为时间的函数对于理解地磁场和地核动力学是至关重要的，它们也为地球动力学模型提供了急需的约束。这笔拨款支持购置一台用于绝对古强度实验的高精度热退磁器和一台用于快速精确表征基本岩石磁性质的交流电磁化率系统，这将有助于开发新的更好的精确测量地磁场古强度的技术。这些仪器将支持一系列由美国国家科学基金会支持的加州大学圣克鲁斯分校地球科学系的古、岩石和环境磁调查，并刺激新的国内和国际合作研究项目。所有获得的数据将在相关数据库中提供（例如，Magnetics Information Consortium - MagIC），并在期刊文章中传播。除了研究之外，这些仪器还将扩展学生目前的研究和研究培训能力。

0651228ZhaoStudies of the earth's past magnetic field (paleointensity) as a function of time are crucially important for understanding the geomagnetic field and core-dynamics, and they also provide much-needed constraints for geodynamo models. This grant supports acquisition of a high-precision thermal demagnetizer for absolute paleointensity experiments and an Alternating-Current susceptibility system for rapidly and precisely characterizing basic rock-magnetic properties that will facilitate development of new and better techniques for accurately measuring geomagnetic field paleointensity. The instruments will support a range of NSF-supported paleo, rock and environmental magnetic investigations in the Department of Earth Sciences at the University of California Santa Cruz and stimulate new national and international collaborative research projects in the Earth sciences. All data acquired will be made available in pertinent databases (e.g., Magnetics Information Consortium - MagIC and disseminated in journal articles. In addition to research, these instruments will extend current research and research training capabilities for students.