Evidence for a slow subsidence of the Tahiti Island from GPS, DORIS, and combined satellite altimetry and tide gauge sea level records

被引：25

作者：

Fadil, Abdelali ^{[1
]}

Sichoix, Lydie ^{[1
]}

Barriot, Jean-Pierre ^{[1
]}

Ortega, Pascal ^{[1
]}

Willis, Pascal ^{[2
,3
]}

机构：

[1] Observ Geodes Tahiti, F-98702 Faaa, Tahiti, France

[2] Inst Geog Natl, Direct Tech, F-94165 St Mande, France

[3] Inst Phys Globe, F-75013 Paris, France

来源：

COMPTES RENDUS GEOSCIENCE | 2011年 / 343卷 / 05期

关键词：

Satellite geodesy; Sea level change; Vertical land motion; VERTICAL CRUSTAL MOTIONS; MODEL; SPACE; PACIFIC; GROWTH; DEFORMATION; CONSTRAINTS; HISTORY; SERVICE; SURFACE;

D O I：

10.1016/j.crte.2011.02.002

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Monitoring vertical land motion is of crucial interest in observations of long-term sea level change and its reconstruction, but is among of the most, yet highly challenging, tasks of space geodesy. The aim of the paper is to compare the vertical velocity estimates of Tahiti Island obtained from five independent geophysical measurements, namely a decade of GPS and DORIS data, 17 years sea level difference (altimeter minus tide gauge (TG)) time series, ICE-5G (VM2 L90) Post-Glacial Rebound (PGR) model predictions, and coral reef stratigraphy. Except for the Glacial Isostatic Adjustment (CIA also known as PGR) model, all the techniques are in a good agreement and reveal a very slow subsidence of the Tahiti Island averaged at -0.5 mm/yr which is barely significant. Nevertheless, despite of that vertical motion, Tahiti remains an ideal location for the calibration of satellite altimeter measurements. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

引用

页码：331 / 341

页数：11

共 81 条

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