Use of a REMUS-100 AUV to obtain hydrographic observations beneath coastal sea ice offshore of Barrow, Alaska is described. The work is motivated by the desire to obtain crossshore hydrographic transects that would provide estimates of the transport of relatively dense, salty water from the Chukchi Sea to the Arctic Ocean in winter. The horizontal scales (~10 km), maximum water depths (~100 m) ...

This paper describes the Simple Ocean Data Assimilation (SODA) reanalysis of ocean climate variability. In the assimilation, a model forecast produced by an ocean general circulation model with an average resolution of 0.25° 0.4° 40 levels is continuously corrected by contemporaneous observations with corrections estimated every 10 days. The basic reanalysis, SODA 1.4.2, spans the 44-yr period ...

Hydrographic sections obtained during the World Ocean Circulation Experiment are combined using a geostrophic inverse model to estimate the global-scale horizontal transports and transport divergences of heat and freshwater with self-consistent error bars. The overall results are compared to bulk formula–derived climatologies and estimates derived from atmospheric reanalyses. At 7.58N in the At...

Bathymetry on continental hydrographic networks is up to now limited to small areas. This hampers exhaustive hydrological or ecological studies on hydrographic networks at management scales. To enlarge rivers bathymetry surveys, bathymetric, i.e. green LiDAR appears as an interesting tool. But if this technique has been widely used for coastal surveys, very few studies focus on water depth meas...

Recent algorithms for processing hydrographic data have treated the problem of achievable resolution by constructing grids of fixed resolution, a composite grid of variable resolution, recursive sub-division in a quad-tree, or by relying on a comprehensive TIN of the original points. These algorithms all impose some artificial structure on the data to allow for efficient computation, however, w...

submitted for presentation at upcoming IEEE/MTSOceans09 International Conference to be held in Biloxi, MS,October 2009 – currently awaiting acceptance. Fulford, Janice M., Davies, William J., “Radar Water-LevelMeasurement for Open Channels”, Proceedings of ThirdInternational Conference on Irrigation and Drainage (USCID), San Diego, CA, 2005. Fulford, Janice M., Ester, L., Heaton...

[1] Seawater dissolved iron isotope ratios (dFe) have been measured in the North Atlantic near Bermuda. In a full-depth profile, seawater dissolved dFe is isotopically heavy compared to crustal values throughout the water column (dFeIRMM-014 = +0.30‰ to +0.71‰). Iron isotope ratios are relatively homogenous in the upper water column (between +0.30‰ to +0.45‰ above 1500 m), and dFe increases bel...

The subtidal circulation of the southeast Greenland shelf is described using a set of high-resolution hydrographic and velocity transects occupied in summer 2004. The main feature is the East Greenland Coastal Current (EGCC), a low-salinity, high-velocity jet with a wedge-shaped hydrographic structure characteristic of other surface buoyancy-driven currents. The EGCC was observed along the enti...

The U.S. Department of Interior has identified the Truckee River basin as highly likely for potential water supply conflict in the future. A critical water supply to the Truckee River is outflow from Lake Tahoe, and surface and groundwater contributions from the Martis Valley hydrographic area. This paper highlights the development of an integrated surface water and groundwater model, GSFLOW, i...

Accurate and reliable bathymetric data are needed for a wide diversity of marine research management applications. Satellite-derived bathymetry represents time saving method to map large shallow waters remote regions compared the current costly in situ measurement techniques. This study aims create very high-resolution (VHR) habitat mapping Mayotte island (Indian Ocean) by fusing 0.5 m Pleiades...