Results 91 to 100 of about 20,887 (256)

The estimation of geoacoustic properties from broadband acoustic data, focusing on instantaneous frequency techniques [PDF]

open access: yes, 2002
The compressional wave velocity and attenuation of marine sediments are fundamental to marine science. In order to obtain reliable estimates of these parameters it is necessary to examine in situ acoustic data, which is generally broadband.
Best, A.I.   +5 more
core  

Critical knowledge gaps in the conservation and restoration of cold‐water corals

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Critical knowledge gaps hamper effective conservation of threatened cold‐water coral (CWC) ecosystems, facing cumulative anthropogenic and climate pressures. This review provides a strategic roadmap for urgent, informed intervention.
Qian Liu   +33 more
wiley   +1 more source

Specialized Committees of International Organizations an Important Source of Organizational Autonomy

open access: yesRegulation &Governance, EarlyView.
ABSTRACT Assigning the preparation of decisions to specialized committees composed of member state representatives is a widespread response to the ‘governor's dilemma’, that is, the tension between competence and control, in international organizations (IOs). We theorize a causal mechanism referring to self‐selection and agenda‐setting effects and show
Michael Giesen   +3 more
wiley   +1 more source

Studies of oceanic tectonics based on GEOS-3 satellite altimetry [PDF]

open access: yes
Using statistical analysis, geoidal admittance (the relationship between the ocean geoid and seafloor topography) obtained from GEOS-3 altimetry was compared to various model admittances.
Kaula, W. M.   +3 more
core   +1 more source

Box Models of Volatile Cycles over the Entire Phanerozoic [PDF]

open access: yes, 2006
Three stand-alone geochemical box models have been developed to simulate globally coupled biogeochemical cycles. These models reflect the evolution of the participating biotic and abiotic constituents in marine and terrestrial environments, including the
Bartdorff, Oliver
core  

Evaluating the possible role of bottom currents and internal waves in shaping seafloor morphology in a mesophotic reef

open access: yesSedimentology, EarlyView.
ABSTRACT Mesophotic reefs are located in low light conditions which, depending on the region, are usually found in water depths greater than ~30 m. They are less affected by ocean warming than reefs found in shallower water depths and thus might become increasingly important for the sustainability of marine biodiversity.
Or M. Bialik   +7 more
wiley   +1 more source

Mantle Exhumation and Post‐Rift Magmatism at an Oblique Magma‐Poor Continental Margin

open access: yesGeophysical Research Letters
Continental breakup is a fundamental tectonic process, which leads to seafloor spreading and the generation of oceanic crust. However, the current understanding of continental margins, based largely on 2‐D seismic transects, is inadequate to capture the ...
Jie Chen   +3 more
doaj   +1 more source

Is plate tectonis withstanding the test of time?

open access: yesAnnals of Geophysics, 1997
Since the theory of plate tectonics was first proposed thirty years ago, some problems have arisen in its practical application. These call into question its fundamental assumptions of horizontal plate motion, hotspot fixity, true polar wander ...
O. Shields
doaj   +1 more source

Near bottom sediment characterization offshore SW San Clemente Island [PDF]

open access: yes, 2002
Normal incidence, 23.5 kHz seafloor acoustic backscatter data and bottom video were measured with the Deep Tow instrument package of the Scripps Institution of Oceanography in 100 meter water depth south of San Clemente Island, CA.
de Moustier, Christian   +1 more
core   +1 more source

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