中研院地球科學研究所 - 地球動力學研究室
IES, Academia Sinica - Geodynamics Lab


研究成果

利用台灣連續GPS資料探討海潮負荷現像

目前主要從事利用全球GPS連續運行參考站的長期觀測資料研究固體地球潮汐形變。主要研究內容包括:

  1. 發展利用GPS台站的觀測資料精密測定潮汐位移參數的關鍵技術與方法;
  2. 探索利用GPS潮汐位移參數反演固體地球潮汐勒夫數;
  3. 建立用於高精度GPS資料處理的GPS實測潮汐形變改正模型;
  4. 分析GPS實測潮汐形變改正模型對GPS座標序列的影響。

該項研究成果,不僅可為深入認識地球深內部的構造提供有價值的觀測約束,而且可為現代大地測量和地球物理觀測提供精密的GPS實測潮汐形變改正模型。

Fig. Spatial distribution of M2 phasor diagrams in three components for the residuals between the GPS tidal displacement estimates and the OTL predictions using the NAO99b and NAO99jb models. The phasor diagrams are represented by the red and blue arrows, for inland GPS sites more than 40 km from the coast and coastal GPS sites within 40 km of the coastline, respectively. The length and azimuth of the arrows indicate amplitude and phase, and phases increase clockwise from the upward direction. The amplitudes and phases of the OTL predictions using the NAO99b and NAO99jb models are indicated by color scales and white contours, respectively.