We exhibit a canonical geometric pairing of the simple closed curves of the degree three cover of the modular surface, Γ\H , with the proper single self-intersecting geodesics of Crisp and Moran. This leads to a pairing of fundamental domains for Γ with Markoff triples. The routes of the simple closed geodesics are directly related to the above. We give two parametrizations of these. Combining ...

International Journal of Remote Sensing Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713722504 Mapping evapotranspiration in the Indus Basin using ASTER data Asaf Sarwar a; Ralf Bill b a Department of Irrigation and Drainage, University of Agriculture, Faisalabad, Pakistan b Institute for Geodesy and Geoinf...

GPS radio occultation with CHAMP: monitoring of climate change parameters T. Schmidt, S. Heise, J. Wickert, G. Beyerle, and C. Reigber GeoForschungsZentrum Potsdam, Department 1: Geodesy and Remote Sensing, Potsdam, Germany Received: 20 September 2004 – Accepted: 27 October 2004 – Published: 1 December 2004 Correspondence to: T. Schmidt ([email protected]) © 2004 Author(s). This work is l...

1 Hungarian Academy of Sciences, Research Group for Physical Geodesy and Geodynamics, Budapest, Hungary 2 FÖMI Satellite Geodetic Observatory, Budapest, Hungary 3 Max-Planck-Institute für Radioastronomie, Bonn, Germany 4 Urumqi Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Urumqi 830011, PR China 5 National Astronomical Observatories, Chinese Academy of Sciences...

Spherical radial basis functions are used to define approximate solutions to strongly elliptic and elliptic pseudodifferential equations on the unit sphere. These equations arise from geodesy. The approximate solutions are found by the Galerkin and collocation methods. A salient feature of the paper is a unified theory for error analysis of both approximation methods.

An extensive review of past work on relativistic gravimetry, gradiometry and chronometric geodesy is given. Then, general theoretical tools are presented and applied for the case of a stationary parameterized post-Newtonian metric. The special case of a stationary clock on the surface of the Earth is studied.

Abstract. Spherical radial basis functions are used to define approximate solutions to pseudodifferential equations of negative orders on the unit sphere. These equations arise from geodesy. The approximate solutions are found by the collocation method. A salient feature of our approach in this paper is a simple error analysis for the collocation method using the same argument as that for the G...

A 3-dimensional model based on a molecular structural recipe having some unique and unexpected shape characteristics is demonstrated. The project was originally initiated to satisfy the aesthetic creative impulse to build a 3-dimensional model or sculpture. Further scientific investigation explained some important nanoscale structural observations that had been seen many years beforehand and mi...

Chronometric geodesy applies general relativity to study the problem of the shape of celestial bodies including the earth, and their gravitational field. The present paper discusses the relativistic problem of construction of a background geometric manifold that is used for describing a reference ellipsoid, geoid, the normal gravity field of the earth and for calculating geoid’s undulation (hei...

Recent theoretical developments in astronomical aperture synthesis have revealed the existence of integer-ambiguity problems. Those problems, which appear in the self-calibration procedures of radio imaging, have been shown to be similar to the nearest-lattice point (NLP) problems encountered in high-precision geodetic positioning, and in global navigation satellite systems. In this paper, we a...