Effects of atmospheric pressure loading on GPS measurements
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2002.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2010
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| Online Access: | http://hdl.handle.net/1721.1/57967 |
| _version_ | 1826193495473258496 |
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| author | Alltop, Jennifer L. (Jennifer Leigh), 1979- |
| author2 | Thomas A. Herring. |
| author_facet | Thomas A. Herring. Alltop, Jennifer L. (Jennifer Leigh), 1979- |
| author_sort | Alltop, Jennifer L. (Jennifer Leigh), 1979- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2002. |
| first_indexed | 2024-09-23T09:40:05Z |
| format | Thesis |
| id | mit-1721.1/57967 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T09:40:05Z |
| publishDate | 2010 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/579672019-04-13T00:07:03Z Effects of atmospheric pressure loading on GPS measurements Effects of atmospheric pressure loading on Global Positioning System measurements Alltop, Jennifer L. (Jennifer Leigh), 1979- Thomas A. Herring. Massachusetts Institute of Technology. Dept. of Earth, Atmospheric, and Planetary Sciences. Massachusetts Institute of Technology. Dept. of Earth, Atmospheric, and Planetary Sciences. Earth, Atmospheric, and Planetary Sciences. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2002. Includes bibliographical references (p. 34). With millimeter-level positioning capabilities, annual fluctuations in GPS height estimates can now be resolved. A likely explanation for these height variations is loading of the Earth's surface. We examine the relative contribution of atmospheric pressure loading to the total signal by modeling loads utilizing Farrell's elastic Green's functions. A focus on four permanent GPS sites provided insight on coastal and seasonal differences as well as the relative impact of atmospheric pressure loading on annual vertical displacements. Our findings suggest that accounting for the inverted barometer response [Farrell, 1972] of the ocean at coastal sites provides a better fit to GPS data. However, near restricted bodies of water we find that the non-inverted barometer fits better. We also found lower closer fits of the modeled pressure load to the GPS data during winter months than during the summer possibly due to larger pressure variations during the winter and/or mismodeling of tropospheric delay during summer months [Herring, 1990]. As for the contribution due to multiple sources of loading, in most cases, by adding an expected water load (from upper 2 meters of soil) to the atmospheric pressure load, a closer agreement to the GPS signal was found. y Jennifer L. Alltop. S.M. 2010-09-01T13:35:00Z 2010-09-01T13:35:00Z 2002 2002 Thesis http://hdl.handle.net/1721.1/57967 51038791 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 34 application/pdf Massachusetts Institute of Technology |
| spellingShingle | Earth, Atmospheric, and Planetary Sciences. Alltop, Jennifer L. (Jennifer Leigh), 1979- Effects of atmospheric pressure loading on GPS measurements |
| title | Effects of atmospheric pressure loading on GPS measurements |
| title_full | Effects of atmospheric pressure loading on GPS measurements |
| title_fullStr | Effects of atmospheric pressure loading on GPS measurements |
| title_full_unstemmed | Effects of atmospheric pressure loading on GPS measurements |
| title_short | Effects of atmospheric pressure loading on GPS measurements |
| title_sort | effects of atmospheric pressure loading on gps measurements |
| topic | Earth, Atmospheric, and Planetary Sciences. |
| url | http://hdl.handle.net/1721.1/57967 |
| work_keys_str_mv | AT alltopjenniferljenniferleigh1979 effectsofatmosphericpressureloadingongpsmeasurements AT alltopjenniferljenniferleigh1979 effectsofatmosphericpressureloadingonglobalpositioningsystemmeasurements |