气候变化领域集成服务门户(CCPortal): Present-Day Crustal Vertical Velocity Field for the Contiguous United States

CCPortal

DOI	10.1029/2020JB020066
	Present-Day Crustal Vertical Velocity Field for the Contiguous United States
	Lau N.; Borsa A.A.; Becker T.W.
发表日期	2020
ISSN	21699313
卷号	125 期号:10
英文摘要	The study of vertical crustal motion in the contiguous United States (CONUS) has traditionally focused on the high-amplitude deformation caused by glacial isostatic adjustment. To better understand more subtle vertical crustal motion resulting from other geophysical processes, we take advantage of the ongoing expansion of continuous Global Positioning System (GPS) networks, whose geodetic observations provide ever-increasing accuracy and spatial resolution of surface deformation. Using position data for 2,782 GPS stations operating between 2007 and 2017, we produce a new vertical crustal velocity field for the CONUS region. We estimate our own station velocities to ensure consistent treatment of time series outliers, noise, and offsets, and we use adaptive smoothing and interpolation to account for spatially varying station density. Our velocity field reveals spatially coherent vertical features that are representative of regional tectonics, hydrologic, and anthropogenic processes. By removing the effects of modeled glacial isostatic adjustment and hydrologic loading estimated from Gravity Recovery and Climate Experiment (GRACE) data, we reduce the variance in our velocity field by 36% and show residuals potentially due to geocenter motion and underlying tectonics. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	center of mass; geodesy; GIA; GPS; GRACE; vertical velocities
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/187569
作者单位	Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States; Institute for Geophysics, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States; Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States
推荐引用方式 GB/T 7714	Lau N.,Borsa A.A.,Becker T.W.. Present-Day Crustal Vertical Velocity Field for the Contiguous United States[J],2020,125(10).
APA	Lau N.,Borsa A.A.,&Becker T.W..(2020).Present-Day Crustal Vertical Velocity Field for the Contiguous United States.Journal of Geophysical Research: Solid Earth,125(10).
MLA	Lau N.,et al."Present-Day Crustal Vertical Velocity Field for the Contiguous United States".Journal of Geophysical Research: Solid Earth 125.10(2020).