With support from the Strategic Environmental Research and Development Program (SERDP) and Environment Security Technology and Certification Program (ESTCP), SAIC has developed and demonstrated a marine unexploded ordnance (UXO) survey system designed for use in shallow water (<9.1m). The air foil shaped sensor platform has two actuatorcontrolled elevators to control depth, altitude and attitud...

A floating unit with three pontoons made of epoxy-coated carbon textile reinforced, ultra-high durability concrete (ECF UHDC), mineral impregnated fibre-reinforced UHDC (MCF UHDC) and, as references, steel-reinforced concretes has been designed and installed in the Northern Atlantic. While marine structures steel reinforcement require large cover depths, which cause problems size, cost, environ...

The world experience of revitalization coastal areas is considered. Vivid examples for the citizens are "Hafen City" in Hamburg, "VКstra Namnen" MalmЪ, "Fjord Oslo, "Canary Wharf" London. Until beginning 21st century, people were not often seen on banks Yonning River Chinese city Taizhou because embankment was a concrete road without trees. A 2002 project to create park along river successful s...

Installation of hydrokinetic power-generating devices is currently being considered for the Yukon and Tanana rivers, two large and glacially turbid rivers in Alaska. We sampled downstream-migrating fish along the margins of both rivers, a middle island in the Yukon River, and mid-channel in the Tanana River in order to assess the temporal and spatial patterns of movement by resident and anadrom...

Ocean waves are a largely untapped energy resource, and the global wave potential is estimated at about 32,000 TWh/year. Due to its great provide renewable sustainable electricity without carbon dioxide emission, conversion technology has attracted extensive attention from multi-disciplinary communities. Compared with wind solar power, power ocean characterised by high density spatio-temporal a...

JellyWsh are increasingly topical within studies of marine food webs. Stable isotope analysis represents a valuable technique to unravel the complex trophic role of these long-overlooked species. In other taxa, sample preservation has been shown to alter the isotopic values of species under consideration, potentially leading to misinterpretation of trophic ecology. To identify potential preserv...

An enclosure experiment was performed in the brackish layer of a Norwegian fjord, a system where both phytoplankton and bacterial growth have previously been hypothesized to be phosphorus (p) limited. All enclosures had a succession pattern characterized by an initial autotrophic phase with positive net community production, increasing phytoplankton primary production, and chlorophyll, followed...

We explored rates and stoichiometry (C : N : P ratios) of sinking particles in a temperate reservoir during a 2-yr period. Plankton was sampled weekly, and a sediment trap placed below the metalimnion collected sinking particles. There were no significant relationships between the stoichiometry of entrapped material and seston or zooplankton stoichiometry. However the differences in the entrapp...