Skip to main content

Advertisement

You are viewing the new article page. Let us know what you think. Return to old version

Letter | Open | Published:

The impact of atmospheric mountain lee waves on systematic geodetic errors observed using the Global Positioning System

Abstract

Atmospheric mountain lee waves excited by a strong westerly wind ahead of approaching cold front are shown to have significant effect on GPS positioning. Before the approach of the cold front significant atmospheric gradients caused by the inhomogeneous water vapor are detected at the sites along the east coast of the Izu Peninsula because of a wet atmosphere to the west of these sites. In contrast, the island site 6 km east of the coast detects a strong gradient with the opposite sense. The Geostationary Meteorological Satellite cloud shows rows of the clouds due to mountain lee waves consistent with the GPS measurements. A numerical simulation explains the mountain lee waves. The atmospheric perturbations induce large systematic errors in the estimates of horizontal positions of the sites in the region.

References

  1. Bar-Sever, Y. E., P. M. Kroger, and J. A. Borjesson, Estimating horizontal gradients of tropospheric path delay with a single GPS receiver, J. Geophys. Res., 103, 5,019–5,035, 1998.

  2. Boucher, C., Z. Altamimi, and P. Sillard, Results and analysis of the ITRF96, IERS Technical Note, 24, 166 pp., 1998.

  3. Chen, G. and T. A. Herring, Effects of atmospheric azimuth asymmetry on the analysis of space geodetic data, J. Geophys. Res., 102, 20,489–20,502, 1997.

  4. Geographical Survey Institute, Crustal movements in the Izu Peninsula and its vicinity, Rep. Coord. Commit. Earthquake Prediction, 58, 290–311, 1997.

  5. Hooke, W. H., Gravity waves, in Mesoscale Meteorology and Forecasting, pp. 272–288, Amer. Meteor. Soc., 1986.

  6. King, R. W. and Y. Bock, Documentation for the GAMIT GPS Analysis Software, Massachusetts Institute of Technology, Cambridge, 2000.

  7. MacMillan, D. S., Atmospheric gradients from very long baseline interferometry observation, Geophys. Res. Lett., 22, 1041–1044, 1995.

  8. Okada, Y. and E. Yamamoto, Dyke intrusion model or the 1989 seismovolcanic activity Off Ito, Central Japan, J. Geophys. Res., 96, 10361–10376, 1991.

  9. Saito, K., Semi-implicit fully compressible version of the MRI mesoscale nonhydrostatic model—Forecast experiment of the 6 August 1993 Kagoshima Torrential Rain—, Geophys. Mag. Ser. 2, 2, 109–137, 1997.

  10. Shimada, S., Y. Fujinawa, S. Sekiguchi, S. Ohmi, T. Eguchi, and Y. Okada, Detection of a volcanic fracture opening in Japan using Global Positioning System measurements, Nature, 343, 631–633, 1990.

Download references

Author information

Correspondence to Seiichi Shimada.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Keywords

  • Global Position System
  • Cold Front
  • Precipitable Water Vapor
  • Global Position System Measurement
  • Geographical Survey Institute