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Analysis of water level measurements using GPS

Cheng, Kai-chien
http://rave.ohiolink.edu/etdc/view?acc_num=osu1127151397

Abstract Details

2005, Doctor of Philosophy, Ohio State University, Geodetic Science and Surveying.
Accurate knowledge about sea level and its change is essential to humanity because a large proportion of the Earth's population lives in coastal regions. This study discusses the existing techniques for sea level measurements, including the use of different types of gauges (e.g., water level gauge or tide gauge, and bottom pressure gauge), as well as GPS and satellite altimetry. The GPS water level measurements from a buoy or a vessel are presented and utilized in this study along with other techniques to collect ellipsoidal, geocentric sea surface height measurements for various studies that help improve our knowledge about sea level and its change. An operational technique of using GPS water level measurement is proposed in this study. The limitation and an upper bound accuracy of the kinematic (epoch-by-epoch) positioning in terms of baseline length are discussed. A set of GPS data in Lake Erie, including buoy data as well as a local GPS network on land, are used to provide the numerical results. Three main applications of using the GPS water level measurements are presented in this study. They are integration of various data sources in the coastal, satellite radar calibration, and GPS hydrology. The objective of these applications is to demonstrate the potential of the GPS technique in collecting water level measurements. The use of GPS measurements is also highlighted in connection with the improvement that they may bring to various techniques such as the use of coastal water level gauge and bottom pressure gauge, and satellite altimetry. This study discusses three applications of using GPS water level measurements. They have shown the capabilities of the GPS technique on buoys or vessels to interact with other techniques for making accurate water level measurements. With the water impacts humanity, such measurements have proven to be valuable for better understanding for the coastal environment.
Che Kwan Shum (Advisor)
180 p.
Geodesy
GPS; GPS water level; tide gauge; satellite altimetry; altimeter calibration; GPS hydrology

Recommended Citations

Citations

  • Cheng, K.-C. (2005). Analysis of water level measurements using GPS [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1127151397

    APA Style (7th edition)

  • Cheng, Kai-chien. Analysis of water level measurements using GPS. 2005. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1127151397.

    MLA Style (8th edition)

  • Cheng, Kai-chien. "Analysis of water level measurements using GPS." Doctoral dissertation, Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1127151397

    Chicago Manual of Style (17th edition)

osu1127151397
2,756
© 2005, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.