DOI: 10.1002/2017JC013257
Scopus记录号: 2-s2.0-85041725979
论文题名: GPS Vertical Land Motion Corrections to Sea-Level Rise Estimates in the Pacific Northwest
作者: Montillet J.-P. ; Melbourne T.I. ; Szeliga W.M.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 2 起始页码: 1196
结束页码: 1212
语种: 英语
英文关键词: Cascadia
; colored noise
; Pacific North West
; sea-level rise
; tide gauge
; vertical land motion
Scopus关键词: correction
; GPS
; noise
; sea level change
; subduction zone
; subsidence
; tide gauge
; uncertainty analysis
; uplift
; vertical movement
; California
; Cape Blanco
; Cape Mendocino
; Cascade Range
; Crescent City
; Olympic Peninsula
; Oregon
; Pacific Northwest
; Puget Sound
; United States
; Washington [United States]
; Washington [United States]
英文摘要: We construct coastal Pacific Northwest profiles of vertical land motion (VLM) known to bias long-term tide-gauge measurements of sea-level rise (SLR) and use them to estimate absolute sea-level rise with respect to Earth's center of mass. Multidecade GPS measurements at 47 coastal stations along the Cascadia subduction zone show VLM varies regionally but smoothly along the Pacific coast and inland Puget Sound with rates ranging from + 4.9 to −1.2 mm/yr. Puget Sound VLM is characterized by uniform subsidence at relatively slow rates of −0.1 to −0.3 mm/yr. Uplift rates of 4.5 mm/yr persist along the western Olympic Peninsula of northwestern Washington State and decrease southward becoming nearly 0 mm/yr south of central coastal Washington through Cape Blanco, Oregon. South of Cape Blanco, uplift increases to 1-2 mm/yr, peaks at 4 mm/yr near Crescent City, California, and returns to zero at Cape Mendocino, California. Using various stochastic noise models, we estimate long-term (̃50-100yr) relative sea-level rise rates at 18 coastal Cascadia tide gauges and correct them for VLM. Uncorrected SLR rates are scattered, ranging between −2 mm/yr and + 5 mm/yr with mean 0.52±1.59 mm/yr, whereas correcting for VLM increases the mean value to 1.99 mm/yr and reduces the uncertainty to ±1.18 mm/yr, commensurate with, but approximately 17% higher than, twentieth century global mean. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114532
Appears in Collections: 气候减缓与适应
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作者单位: School of Engineering (EPFL STI IMT-ESPLAB), Ecole Polytechnique Fédérale de Lausanne, Neuchâtel, Switzerland; Pacific Northwest Geodetic Array, Department of Geological Sciences, Central Washington University, Ellensburg, WA, United States
Recommended Citation:
Montillet J.-P.,Melbourne T.I.,Szeliga W.M.. GPS Vertical Land Motion Corrections to Sea-Level Rise Estimates in the Pacific Northwest[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(2)