Satellite altimetry has become an operational remote sensing technique with important applications to geodynamics. In the present paper, ocean floor topography and tectonic detection in the deep earth are investigated using gravity anomalies from global gravity models and satellite altimetry corrected for waveform distortions. We compute the spherical harmonic degree components of the gravity a...

We analyze errors in the global bathymetry models of Smith and Sandwell that combine satellite altimetry with acoustic soundings and shorelines to estimate depths. Versions of these models have been incorporated into Google Earth and the General Bathymetric Chart of the Oceans (GEBCO). We use Japan Agency for Marine-Earth Science and Technology (JAMSTEC) multibeam surveys not previously incorpo...

The objective of this study is to determine spatio-temporal variations of water volume over inundated areas located in large river basins using combined observations from the Synthetic Aperture Radar (SAR) onboard the Japanese Earth Resources Satellite (JERS1), the Topex/Poseidon (T/P) altimetry satellite, and in-situ hydrographic stations. Ultimately, the goal is to quantify the role of floodp...

Abstract. The outflow of supercooled Ice Shelf Water from the conjoined Ross and McMurdo ice shelf cavity augments fast thickness forms a thick sub-ice platelet layer in Sound. Here, we investigate whether CryoSat-2 satellite radar altimeter can consistently detect higher freeboard caused by thicker combined with buoyant forcing beneath. Freeboards obtained were compared 4 years drill-hole-meas...

Abstract The seasonal variability of mode-1 M 2 internal tides is investigated using 25 years multi-satellite altimeter data from 1992–2017. Four tide models are constructed seasonally-subsetted and World Ocean Atlas climatologies. This work made possible by a newly-developed mapping procedure that can significantly suppress model errors. Seasonal-mean seasonally-variable derived the four model...