Now showing items 11-20 of 5511
Sedation at sea of entangled North Atlantic right whales (Eubalaena glacialis) to enhance disentanglement
(Public Library of Science, 2010-03-09)
The objective of this study was to enhance removal of fishing gear from right whales (Eubalaena glacialis) at sea that evade disentanglement boat approaches. Titrated intra muscular injections to achieve sedation were ...
Seismic reflection images of a near-axis melt sill within the lower crust at the Juan de Fuca ridge
The oceanic crust extends over two thirds of the Earth’s solid surface and is generated along mid-ocean ridges from melts derived from the upwelling mantle. The upper and mid crust are constructed by dyking and seafloor ...
External tagging does not affect the feeding behavior of a coral reef fish, Chaetodon vagabundus (Pisces: Chaetodontidae)
Increasingly, the ability to recognize individual fishes is important for studies of population dynamics, ecology, and behavior. Although a variety of methods exist, external tags remain one of the most widely applied ...
Deep-sea mining of seafloor massive sulfides
The potential emergence of an ocean mining industry to exploit seafloor massive sulfides could present opportunities for oceanographic science to facilitate seafloor mineral development in ways that lessen environmental harms.
Pacific Ocean inflow : influence on catastrophic reduction of sea ice cover in the Arctic Ocean
(American Geophysical Union, 2006-04-21)
The spatial pattern of recent ice reduction in the Arctic Ocean is similar to the distribution of warm Pacific Summer Water (PSW) that interflows the upper portion of halocline in the southern Canada Basin. Increases in ...
Selective preservation of organic matter in marine environments; processes and impact on the sedimentary record
(Copernicus Publications on behalf of the European Geosciences Union, 2010-02-05)
The present paper is the result of a workshop sponsored by the DFG Research Center/Cluster of Excellence MARUM "The Ocean in the Earth System", the International Graduate College EUROPROX, and the Alfred Wegener Institute ...
A model for uranium, rhenium, and molybdenum diagenesis in marine sediments based on results from coastal locations
The purpose of this research is to characterize the mobilization and immobilization processes that control the authigenic accumulation of uranium (U), rhenium (Re) and molybdenum (Mo) in marine sediments. We analyzed ...
Uranium diagenesis in sediments underlying bottom waters with high oxygen content
We measured U in sediments (both pore waters and solid phase) from three locations on the middle Atlantic Bight (MAB) from the eastern margin of the United States: a northern location on the continental shelf off ...
Oxygen and hydrogen isotope fractionation in serpentine–water and talc–water systems from 250 to 450°C, 50 MPa
Oxygen and hydrogen isotope fractionation factors in the talc-water and serpentine-water systems have been determined by laboratory experiment from 250 to 450°C at 50 MPa using the partial exchange technique. Talc was ...
Auditory temporal resolution of a wild white-beaked dolphin (Lagenorhynchus albirostris)
Adequate temporal resolution is required across taxa to properly utilize amplitude modulated acoustic signals. Among mammals, odontocete marine mammals are considered to have relatively high temporal resolution, which is ...