Preprints

Filtering by Subject: Other Mathematics

An experimental combination of IGS repro3 campaign’s orbit products using a variance component estimation strategy

Pierre Sakic, Gustavo Bento Mansur, Benjamin Männel, et al.

Published: 2021-10-05
Subjects: Astrophysics and Astronomy, Earth Sciences, Navigation, Guidance, Control and Dynamics, Other Earth Sciences, Other Mathematics

Over the past years, the International GNSS Service (IGS) has put efforts into reprocessing campaigns reanalyzing the full data collected by the IGS network since 1994. The goal is to provide a consistent set of orbits, station coordinates, and earth rotation parameters using state-of-the-art models. Different from the previous campaigns - namely: repro1 and repro2 - the repro3 includes not only [...]

Facies architecture of submarine channel deposits on the western Niger Delta slope: Implications for grain-size and density stratification in turbidity currents

Zane Richards Jobe, Zoltan Sylvester, Michele Bolla-Pittaluga, et al.

Published: 2018-01-28
Subjects: Earth Sciences, Geology, Geomorphology, Mathematics, Oceanography and Atmospheric Sciences and Meteorology, Other Mathematics, Physical Sciences and Mathematics, Sedimentology, Stratigraphy

High-resolution bathymetry, seismic reflection, and piston core data from a submarine channel on the western Niger Delta slope demonstrate that thick, coarse-grained, amalgamated sands in the channel thalweg/axis transition to thin, fine-grained, bedded sands and muds in the channel margin. Radiocarbon ages indicate that axis and margin deposits are coeval. Core data show that bed thickness, [...]

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