Central and South America GPS geodesy ‐ CASA Uno

Kellogg, James N.; Dixon, Timothy H.

doi:10.1029/gl017i003p00195

Cited by 30 publications

(11 citation statements)

References 21 publications

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“…[31] There have been several major GPS projects in South America, including CASA [e.g., Kellogg and Dixon, 1990], SNAPP [e.g., Leffler et al, 1997;Norabuena et al, 1998], SAGA [e.g., Khazaradze and Klotz, 2003], CAP [e.g., Kendrick et al, 2001] and ANSA [e.g., Klotz and Lelgemann, 1988]. These clearly document shortening within the modern cordillera mountain front [e.g., Leffler et al, 1997;Norabuena et al, 1998;Kendrick et al 2001].…”

Section: Discussionmentioning

confidence: 99%

Recent, slow normal and strike‐slip faulting in the Pasto Ventura region of the southern Puna Plateau, NW Argentina

2013

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Recent normal and strike‐slip faulting on the Puna Plateau of NW Argentina has been linked to lithospheric foundering, gravitational spreading, plate boundary forces and a decrease in crustal shortening from north to south. However, the timing, kinematics and rate of extension remain poorly constrained. We focus on the Pasto Ventura region (NW Argentina) located on the southern Puna Plateau and recent deformation (<1 Ma). Field mapping and kinematic analysis across offset volcanic cinder cones show that the overall extension direction is subhorizontal, is oriented NE‐SW to NNE‐SSW, and occurs at a slow, time‐integrated rate of 0.02 to 0.08 mm/yr since at least 0.8–0.5 Ma. A regional compilation from this study and existing data shows that recent extension across the Puna Plateau is subhorizontal but varies in azimuthal orientation dramatically. Data from the Pasto Ventura region are consistent with a number of models to explain normal and strike‐slip faulting on the Puna Plateau, all of which likely influence the region. Some role for lower lithospheric foundering through dripping appears to be seen based on the regional extension directions and ages of mafic volcanism in the southern Puna Plateau.

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Section: Discussionmentioning

confidence: 99%

Recent, slow normal and strike‐slip faulting in the Pasto Ventura region of the southern Puna Plateau, NW Argentina

2013

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“…As yet, published crustal‐deformation results (discussed in the previous sections) include only a few isolated areas with repeated surveys or areas where recent GPS data are combined with historical triangulation or trilateration surveys. Many ambitious GPS measurement programs have been initiated worldwide and results are expected in the next few years (e.g., Jordan and Minster [1988a], Kellogg and Dixon [1990], Smith et al . [1989]).…”

Section: Gps Relative Position Measurementsmentioning

confidence: 99%

Recent Plate Motions and Crustal Deformation

Lisowski

1991

Reviews of Geophysics

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“…Global GPS data from the CASA UNO experiment (Kellogg and Dixon, 1990) have been analyzed in a double differenced mode using GEOSAT. The results show length differences with UTOPIA solutions at the level of 3 × 10 -9 for weekly solutions, and lengths agree with VLBI to better than 10 -s up to 5400 km (Andersen and Hauge, unpublished work, 1991).…”

Section: Introductionmentioning

confidence: 99%

GPS relative positioning at a precision level of one part per billion

Andersen

Hauge

Kristiansen

1993

Bulletin Géodésique

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A b s t r a c t . Six days of data from the GIG'91 experiment have been analyzed with a fiducial strategy. The results obtained with our orbital software GEOSAT, show daily horizontal and length repeatabilities at the level of 1 part in 109 plus 2 mm for baseline lengths up to 4000 kin. A direct comparison with results from the GIPSY software shows, with some exceptions, mean differences at the sub-cm level. After transformation to ITRF'90 the rms of the coordinate differences is 14.8 ram. Studies of orbital predictions and comparisons with external high precision orbits indicate a mean orbit precision and accuracy of around 35 cm in each cartesian coordinate. Correlations between the GEOSAT and GIPSY solutions indicate some common model deficiencies.

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Central and South America GPS geodesy ‐ CASA Uno

Abstract: Abstract. In January 1988, scientists from over 25 organizations in ! 3 countries and territories cooperated in the largest Global Positioning System (GPS) campaign in t_he world to date (Table !)

Cited by 30 publications

References 21 publications

Recent, slow normal and strike‐slip faulting in the Pasto Ventura region of the southern Puna Plateau, NW Argentina

Recent, slow normal and strike‐slip faulting in the Pasto Ventura region of the southern Puna Plateau, NW Argentina

Recent Plate Motions and Crustal Deformation

GPS relative positioning at a precision level of one part per billion

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