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Full-Text Articles in Physical Sciences and Mathematics
Reply [To “Comment On ‘Topographic And Volcanic Asymmetry Around The Red Sea: Constraints On Rift Models’”], Timothy H. Dixon, Erik R. Ivins, Brenda J. Franklin
Reply [To “Comment On ‘Topographic And Volcanic Asymmetry Around The Red Sea: Constraints On Rift Models’”], Timothy H. Dixon, Erik R. Ivins, Brenda J. Franklin
School of Geosciences Faculty and Staff Publications
No abstract provided.
Preliminary Determination Of Pacfic-North America Relative Motion In The Southern Gulf Of Calfornia Using The Global Positioning System, Timothy H. Dixon, G. Gonzalez, S. M. Lichten, D. M. Tralli, G. E. Ness, J. P. Dauphin
Preliminary Determination Of Pacfic-North America Relative Motion In The Southern Gulf Of Calfornia Using The Global Positioning System, Timothy H. Dixon, G. Gonzalez, S. M. Lichten, D. M. Tralli, G. E. Ness, J. P. Dauphin
School of Geosciences Faculty and Staff Publications
Global Positioning System (GPS) data from experiments conducted in 1985 and 1989 in the southern Gulf of California, Mexico, allow a determination of relative motion between the Pacific and North American plates. The data indicate motion of Cabo San Lucas on the Pacific plate relative to North America at a rate of 47±7 mrn/yr and azimuth of 57±6° west of north (1σ errors), equivalent within uncertainties to the NUVEL-1 global plate motion model.
An Introduction To The Global Positioning System And Some Geological Applications, Timothy H. Dixon
An Introduction To The Global Positioning System And Some Geological Applications, Timothy H. Dixon
School of Geosciences Faculty and Staff Publications
Receivers equipped to measure dual frequency carrier phase signals from satellites of the Global Positioning System (GPS) have been capable, under special conditions, of determining relative horizontal positions among stations separated by one to a few hundred kilometers with a precision of one to several millimeters since the early 1980s. The major obstacles to making this capability routine, extending it to all parts of the globe, and extending it to longer station separations, have been equipment cost, limitations in the GPS satellite constellation, arduous data analysis, uncertainties in satellite orbits, uncertainties in propagation delays associated with variable tropospheric water vapor, …
First Epoch Geodetic Measurements With The Global Positioning System Across The Northern Caribbean Plate Boundary Zone, Timothy H. Dixon, G. Gonzalez, S. M. Lichten, E. Katsigris
First Epoch Geodetic Measurements With The Global Positioning System Across The Northern Caribbean Plate Boundary Zone, Timothy H. Dixon, G. Gonzalez, S. M. Lichten, E. Katsigris
School of Geosciences Faculty and Staff Publications
The first geodetic survey across the northern Caribbean plate boundary zone with the Global Positioning System (GPS) was conducted in June 1986. Baseline vectors defined by the six station regional GPS network ranged from 170 to 1260 km in length. Repeatability of independent daily baseline estimates was better than 8 mm plus 1.3 parts in 108 of baseline length for horizontal components. The wet tropospheric path delay during the experiment was both high, sometimes exceeding 30 cm at zenith, and variable, sometimes exceeding 5 cm variation over several hours. Successful carrier phase cycle ambiguity resolution (“bias fixing”) could not …