Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
권호 표지
DOI QR코드

DOI QR Code

Detection of Ocean Tide Loading Constituents Based on Precise Point Positioning by GPS

GPS 정밀단독측위기법을 이용한 해양조석하중 분조성분 검출

  • 원지혜 (인하대학교 지리정보공학과) ;
  • 박관동 (인하대학교 지리정보공학과)
  • Published : 2009.12.15
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the Ocean Tide Loading (OTL) constituents were detected by the Precise Point Positioning (PPP) technique using GPS. Then, the GPS estimates of OTL constituents were compared with the predictions of the ocean tide models. We picked three permanent GPS stations as test sites and they are ICNW, SEOS, and CJUN. To detect the OTL constituents using GPS, we created vertical coordinate time series at 10-minute intervals using the PPP approach implemented in the GIPSY software. Through the tidal harmonic analysis of this height time series, the four major constituents ($M_2$, $S_2$, $K_1$, $O_1$) were determined. The amplitude obtained from the GPS height time series of the OTL constituents showed best match with the model predictions at CJUN, while the phase showed closest match at ICNW. The amplitude accuracy of the $M_2$, which is the dominant factor out of the 11 major constituents, was 24.8% on average.

이 연구에서는 GPS(Global Positioning System) 정밀단독측위 기법을 이용하여 해양조석하 중(Ocean Tide Loading, OTL) 분조성분을 검출하고, 그 결과를 조석모델에 의한 예측값과 비교하였다. 고정밀 GPS 자료처리 프로그램인 GIPSY를 사용하여 인천, 서산, 제주 GPS 상시관측소를 대상으로 10분 단위의 수직좌표 시계열을 산출하였으며, 시계열의 조석조화분해를 통해 OTL 지각변위를 일으키는 주요 4대 분조($M_2$, $S_2$, $K_1$, $O_1$)의 진폭과 위상을 검출하였다. 조석모델의 예측값을 기준으로 GPS로 산출한 OTL 분조의 정확도를 평가한 결과 진폭은 제주관측소, 위상은 인천관측소에서 가장 높은 정확도를 나타내었다. 주요 11개 분조 중 최대비율을 차지하는 $M_2$분조의 경우 진폭성분에서 평균 23.8%의 상대오차를 보였다.

Keywords

References

  1. 김명규 2007, 석사학위논문, 관동대학교 국토방재대학원
  2. 박관동, 원지혜, 김호균, 임관창 2007, 한국우주과학회지, 24, 249
  3. 윤홍식, 이동하, 2003, 한국측량학회지, 21, 317
  4. Baker, T. F., Edge, R. J., & Jeffries, G. 1991, Geophys. J. Int., 107, 1 https://doi.org/10.1111/j.1365-246X.1991.tb01151.x
  5. Choi, B. H. 1980, A tidal model of the Yellow Sea and the Eastern China Sea (Ansan: Korea Ocean Research and Development Institute)
  6. Khan, S. A. & Scherneck, H. -G. 2003, J. Geodesy, 77, 117 https://doi.org/10.1007/s00190-003-0312-y
  7. Khan, S. A. & Tscherning, C. C. 2001, GRL, 28, 2249 https://doi.org/10.1029/2000GL011890
  8. King, M. 2006, J. Geodynamics, 41, 77 https://doi.org/10.1016/j.jog.2005.08.019
  9. Lambeck, K. 1988, Geophysical Geodesy: The Slow Deformations of the Earth (Oxford: Oxford Science Publications), p.718
  10. Lee, H. C. & Moon, W. M. 2001, Geosciences J., 5, 319 https://doi.org/10.1007/BF02912703
  11. Lyard, F., Lefevre, F., Letellier, T., & Francis, O. 2006, Ocean Dyn., 56, 394 https://doi.org/10.1007/s10236-006-0086-x
  12. Matsumoto, K., Sato, T., Takanezawa, T., & Ooe, M. 2000, J. Oceanography, 56, 567 https://doi.org/10.1023/A:1011157212596
  13. Matsumoto, K., Sato, T., Takanezawa, T., & Ooe, M. 2001, J. Geod. Soc. Japan, 47, 243
  14. McCarthy, D. D. & Petit, G. 2003, IERS Technical Note 32
  15. Rich, P., Bob, B., & Steve, L. 2002, Computers & Geosciences, 28, 929 https://doi.org/10.1016/S0098-3004(02)00013-4
  16. Schaer, S. & Hugentobler, U. 2006, IGSMAIL-5518
  17. Schenewerk, M. S., Marshall, J., & Dillinger, W. 2001, J. Geod. Soc. Japan, 47, 237
  18. Scherneck, H. G. & Bos, M. S. 2002, in IVS 2002 General Meeting Proceedings, eds. N. R. Vandengerg & K. D. Baver (Washington, D.C.: NASA), pp.205-214
  19. Scherneck, H. G., Johansson, J. M., & Webb, F. H. 2000, Ocean loading tides in GPS and rapid variations of the frame origin (Heidelberg: Springer Berlin), pp.32-40
  20. Shum, C. K., Woodworth, P. L., Andersen, O. B., Egbert, G., Francis, O., King, C., Klosko, S., Le Provost, C., Li, X., Molines, J., Parke, M., Ray, R., Schlax, M., Stammer, D., Tierney, C., Vincent, P., & Wunsch, C. 1997, JGR, 102, 25173 https://doi.org/10.1029/97JC00445
  21. Sovers, O. J. 1994, GRL, 21, 357 https://doi.org/10.1029/93GL02648
  22. Thomas, I. D., King, M. A., & Clarke, P. J. 2007, J. Geodesy, 81, 359 https://doi.org/10.1007/s00190-006-0118-9
  23. Vergnolle, M., Bouin, M. -N., Morel, L., Masson, F., Durand, S., Nicolas, J., & Melachroinos, S. A. 2008, Geophys. J. Int., 173, 444 https://doi.org/10.1111/j.1365-246X.2008.03734.x
  24. Webb, F. H. & Zumberge, J. F. 1993, An introduction to the GIPSY/OASIS II (Pasadena: JPL Publication), D-11088

Cited by

  1. Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea vol.32, pp.4, 2015, https://doi.org/10.5140/JASS.2015.32.4.403
  2. Accuracy Analysis of Ocean Tide Loading Constituent Detection Using GNSS Positioning vol.34, pp.3, 2016, https://doi.org/10.7848/ksgpc.2016.34.3.299