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A Locally Adaptive Spatial Interpolation Technique for the Generation of High-Resolution DEMs

Dhanasekaran, Deepananthan
http://rave.ohiolink.edu/etdc/view?acc_num=osu1306112037

Abstract Details

2011, Master of Science, Ohio State University, Geodetic Science and Surveying.
Airborne traverse data require spatial interpolation to generate continuous Digital Elevation Models (DEMs). DEMs in turn are important resources for geographical and environmental studies. In this study we use ice thickness data and surface elevation data collected by the NASA DC-8 aircraft as a part of the IceBridge mission from October and November, 2009. The ice thickness and surface elevation data downloaded from the National Snow and Ice Data Center (NSIDC) were processed for removal of anomalous data using a GIS. We developed a locally adaptive interpolation algorithm, which segments the data into several local regions based on the statistical properties of the data. We produced ice thickness, surface elevation and subglacial DEMs for Pine Island and Thwaites glaciers using the processed dataset and our locally adaptive algorithm. We made a comparative study between different interpolation techniques to determine the suitable interpolation technique for use with airborne traverse data. Finally, we validated our DEMs through visual comparison with the RADARSAT imageries and by comparison with the existing DEMs available for the Pine Island and Thwaites glaciers. Our DEMs can be used by glaciologists for climate change studies, as it captures the geographic features better than existing DEMs available for this region.
Dr. Rongxing Li, PhD (Advisor)
Dr. Kenneth C. Jezek, PhD (Committee Member)
Dr. Carolyn J. Merry, PhD (Committee Member)
101 p.
Civil Engineering; Climate Change; Computer Engineering; Earth; Geographic Information Science; Geophysics; Remote Sensing
Mapping; GIS; Geostatistics; Airborne Radar; Lidar; Remote Sensing; Glaciology; Pine Island Glacier; Thwaites Glacier

Recommended Citations

Citations

  • Dhanasekaran, D. (2011). A Locally Adaptive Spatial Interpolation Technique for the Generation of High-Resolution DEMs [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306112037

    APA Style (7th edition)

  • Dhanasekaran, Deepananthan. A Locally Adaptive Spatial Interpolation Technique for the Generation of High-Resolution DEMs. 2011. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1306112037.

    MLA Style (8th edition)

  • Dhanasekaran, Deepananthan. "A Locally Adaptive Spatial Interpolation Technique for the Generation of High-Resolution DEMs." Master's thesis, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306112037

    Chicago Manual of Style (17th edition)

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© 2011, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.