气候变化领域集成服务门户(CCPortal): Modeling GPS Signal Propagation Through Volcanic Plumes

CCPortal

DOI	10.1029/2020JD034526
	Modeling GPS Signal Propagation Through Volcanic Plumes
	Rainville N.; Palo S.; Larson K.M.
发表日期	2021
ISSN	2169897X
卷号	126 期号:12
英文摘要	Volcanic plumes have been detected by monitoring for a drop in the Signal to Noise Ratio (SNR) of Global Positioning System (GPS) signals at receivers close to the erupting volcano. Understanding the physical processes causing this decrease in GPS SNR during eruptions can help to both refine the plume detection technique and to better understand the structure of the observed plume. However, there are multiple physical effects that may cause signal extinction within a plume, and understanding how GPS signals interact with tephra particles is critical to explaining the loss in signal strength. To uncover which conditions could significantly affect GPS signals, a forward model for electromagnetic scattering and absorption through a plume is developed. Plume geometry as well as particle composition, density, and charge is considered and evaluated for contribution to GPS signal extinction. The simulated results are compared against GPS data taken during two eruptions: the 23 November 2013 eruption at Etna Volcano and the 23 March 2009 eruption of Redoubt Volcano. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185179
作者单位	Ann and HJ Smead Department of Aerospace Engineering Sciences, University of Colorado, Boulder, CO, United States
推荐引用方式 GB/T 7714	Rainville N.,Palo S.,Larson K.M.. Modeling GPS Signal Propagation Through Volcanic Plumes[J],2021,126(12).
APA	Rainville N.,Palo S.,&Larson K.M..(2021).Modeling GPS Signal Propagation Through Volcanic Plumes.Journal of Geophysical Research: Atmospheres,126(12).
MLA	Rainville N.,et al."Modeling GPS Signal Propagation Through Volcanic Plumes".Journal of Geophysical Research: Atmospheres 126.12(2021).