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Long-Term GNSS Analysis for Local Geodetic Datum After 2011 Tohoku Earthquake

Published online by Cambridge University Press:  02 October 2017

Su-Kyung Kim  and
Tae-Suk Bae
Su-Kyung Kim
Affiliation:
(Department of. Geoinformation Engineering, Sejong University, Seoul 05006, Korea)
Tae-Suk Bae*
Affiliation:
(Department of. Geoinformation Engineering, Sejong University, Seoul 05006, Korea)
*
(E-mail: baezae@sejong.ac.kr)
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Abstract

The current Korean national geodetic reference frame, KGD2002, refers to the fixed epoch at 2002·0 under the assumption that there is no crustal movement of the Korean peninsula. A discontinuity in the coordinates of the reference stations may occur due to the relocation of the stations, antenna replacement, or earthquakes. The static reference frame has difficulty in covering continuous and/or discontinuous crustal movements at the same time. A new dynamic local geodetic reference frame has been calculated based on eight years (2007–2014) of Global Navigation Satellite System (GNSS) data. The final geodetic coordinates and velocities were calculated on the basis of the IGb08 reference frame. The discontinuity caused by the 2011 Tohoku earthquake can be addressed using the newly proposed model in this study, which ensures the consistency and continuity of the local geodetic datum.

Keywords

Geodetic DatumGNSSCrustal Movement
Type
Research Article
Information
The Journal of Navigation , Volume 71 , Issue 1 , January 2018 , pp. 117 - 133
Copyright
Copyright © The Royal Institute of Navigation 2017 

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