气候变化领域集成服务门户(CCPortal): Uncertainty Propagation in Hierarchical Paleomagnetic Reconstructions

CCPortal

DOI	10.1029/2020JB019488
	Uncertainty Propagation in Hierarchical Paleomagnetic Reconstructions
	Heslop D.; Roberts A.P.
发表日期	2020
ISSN	21699313
卷号	125 期号:6
英文摘要	Estimation of paleomagnetic directions plays a crucial role in magnetostratigaphy, paleogeographic reconstruction, and constraining past geomagnetic field behavior. While analysis and aggregation of paleomagnetic directional data are performed in a hierarchical fashion, the standard statistical framework employed by paleomagnetists does not consider uncertainty propagation through each level of the hierarchy. With this limitation, inferences drawn from paleomagnetic data will be affected by underestimated uncertainties. We provide here an approximate directional uncertainty propagation scheme that applies to Fisher distributions and, thus, to a number of paleomagnetic data processing tasks. The scheme is a straightforward addition to the existing paleomagnetic statistical framework and is demonstrated using case studies to show how uncertainties can be propagated through different stages of the paleomagnetic data processing chain. Furthermore, we discuss situations, such as the transformation into virtual geomagnetic poles, where this simple form of uncertainty propagation cannot be employed because the data are not Fisher distributed. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Paleomagnetism
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187813
作者单位	Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia
推荐引用方式 GB/T 7714	Heslop D.,Roberts A.P.. Uncertainty Propagation in Hierarchical Paleomagnetic Reconstructions[J],2020,125(6).
APA	Heslop D.,&Roberts A.P..(2020).Uncertainty Propagation in Hierarchical Paleomagnetic Reconstructions.Journal of Geophysical Research: Solid Earth,125(6).
MLA	Heslop D.,et al."Uncertainty Propagation in Hierarchical Paleomagnetic Reconstructions".Journal of Geophysical Research: Solid Earth 125.6(2020).