towards an ocean governance framework and national ocean policy
... concepts on ocean governance and ocean policy to show that Peru could be benefited in adopting an ocean governance framework and an integrated national ocean policy. Part I explores the main ocean governance and ocean policy concepts established by academics and specialists. Part II analyzes the Can ...
... concepts on ocean governance and ocean policy to show that Peru could be benefited in adopting an ocean governance framework and an integrated national ocean policy. Part I explores the main ocean governance and ocean policy concepts established by academics and specialists. Part II analyzes the Can ...
Relative Abundance and Diversity of Bacterial Methanotrophs at the
... cold seeps. Surprisingly, MOB phylogenetic lineages typical of terrestrial environments were observed at such water depth. In contrast, MOB cells or pmoA sequences were not detected at the previous lobe complex that is disconnected from the Congo River inputs. Keywords: aerobic methane-oxidizing bac ...
... cold seeps. Surprisingly, MOB phylogenetic lineages typical of terrestrial environments were observed at such water depth. In contrast, MOB cells or pmoA sequences were not detected at the previous lobe complex that is disconnected from the Congo River inputs. Keywords: aerobic methane-oxidizing bac ...
The lithosphere under stress
... can well up to be the base of the oceanic crust at the spreading axis also causes a decrease in the amount of melt generated from mantle at a given temperature. The first change works in the opposite direction to the second two changes, and the revised estimate of mantle temperature is little altere ...
... can well up to be the base of the oceanic crust at the spreading axis also causes a decrease in the amount of melt generated from mantle at a given temperature. The first change works in the opposite direction to the second two changes, and the revised estimate of mantle temperature is little altere ...
SEDIMENTARY BASINS BASIN TYPES ACCORDING TO
... • Deep-sea trench floors are composed of descending oceanic crust. Therefore, some of them represent the deepest elongate basins present on the globe. In areas of very high sediment influx from the neighboring continent, however, they are for the most part filled up and morphologically resemble a co ...
... • Deep-sea trench floors are composed of descending oceanic crust. Therefore, some of them represent the deepest elongate basins present on the globe. In areas of very high sediment influx from the neighboring continent, however, they are for the most part filled up and morphologically resemble a co ...
The NOAA Ship Okeanos Explorer To Boldly Go…
... of water form an open lattice that surrounds molecules of methane without forming chemical bonds between the two materials. In deep-ocean sediments, conditions of low temperature and ...
... of water form an open lattice that surrounds molecules of methane without forming chemical bonds between the two materials. In deep-ocean sediments, conditions of low temperature and ...
Continental Drift - Pearson Higher Education
... ocean as some predict? Have continents really drifted apart over the centuries? Answers to these questions and many others that have intrigued geologists for decades are now being provided by an exciting theory on large-scale movements taking place within Earth. This theory, called plate tectonics, ...
... ocean as some predict? Have continents really drifted apart over the centuries? Answers to these questions and many others that have intrigued geologists for decades are now being provided by an exciting theory on large-scale movements taking place within Earth. This theory, called plate tectonics, ...
Initiation of subduction in nature and models
... of events explains why mature passive margins are typically very stable [4]. The issue of induced versus spontaneous subduction initiation also remains partially controversial in both nature and within numerical models. As summarized by [5], nearly half of all active subduction zones initiated durin ...
... of events explains why mature passive margins are typically very stable [4]. The issue of induced versus spontaneous subduction initiation also remains partially controversial in both nature and within numerical models. As summarized by [5], nearly half of all active subduction zones initiated durin ...
Chapter 8: Atmospheric Circulation and Pressure Distributions
... changes in northward flow of warm, salty surface water along the conveyor belt. ...
... changes in northward flow of warm, salty surface water along the conveyor belt. ...
Ocean acidification due to increasing atmospheric carbon dioxide Policy document 12/05 June 2005
... with the atmosphere. Over the past 200 years, since preindustrial times, the oceans have absorbed about a half of the CO2 emissions produced from burning fossil fuels and cement manufacture. This demonstrates the integral role that oceans play within the natural processes of cycling carbon on a glob ...
... with the atmosphere. Over the past 200 years, since preindustrial times, the oceans have absorbed about a half of the CO2 emissions produced from burning fossil fuels and cement manufacture. This demonstrates the integral role that oceans play within the natural processes of cycling carbon on a glob ...
Ocean acidification due to increasing atmospheric carbon dioxide
... with the atmosphere. Over the past 200 years, since preindustrial times, the oceans have absorbed about a half of the CO2 emissions produced from burning fossil fuels and cement manufacture. This demonstrates the integral role that oceans play within the natural processes of cycling carbon on a glob ...
... with the atmosphere. Over the past 200 years, since preindustrial times, the oceans have absorbed about a half of the CO2 emissions produced from burning fossil fuels and cement manufacture. This demonstrates the integral role that oceans play within the natural processes of cycling carbon on a glob ...
3 Types of Metamorphism
... • Rocks are metamorphosed over large areas that are the size of many states or even several countries ...
... • Rocks are metamorphosed over large areas that are the size of many states or even several countries ...
Cenozoic mass extinctions in the deep sea
... process of food transfer from surface to bottom, or because more food was produced chemosynthetically on the seafloor. Alternatively, after the end-Cretaceous extinction the food supply from the photic zone recovered in less time than previously thought. In contrast, deep-sea benthic foraminifera di ...
... process of food transfer from surface to bottom, or because more food was produced chemosynthetically on the seafloor. Alternatively, after the end-Cretaceous extinction the food supply from the photic zone recovered in less time than previously thought. In contrast, deep-sea benthic foraminifera di ...
Goal 2 - The learner will demonstrate an
... properties due to variations in temperature, pressure and penetration of light. Many earth materials and geochemical cycles originate in the ocean. Productivity is greatest in the surface layers of the ocean, where sunlight penetrates and photosynthesis occurs. Currents and recycling processes make ...
... properties due to variations in temperature, pressure and penetration of light. Many earth materials and geochemical cycles originate in the ocean. Productivity is greatest in the surface layers of the ocean, where sunlight penetrates and photosynthesis occurs. Currents and recycling processes make ...
Response to EPA Notice of Call for Public Comment on 303(d) Program and Ocean Acidification from the Ocean Carbon and
... We are pleased that the EPA is considering ocean acidification as it addresses protection of both marine and fresh water. The scientific community has focused primarily on the atmosphereocean linkage in ocean acidification. Technically, ocean acidification is the pH decrease of the Earth’s oceans du ...
... We are pleased that the EPA is considering ocean acidification as it addresses protection of both marine and fresh water. The scientific community has focused primarily on the atmosphereocean linkage in ocean acidification. Technically, ocean acidification is the pH decrease of the Earth’s oceans du ...
Benthic Exchange and Biogeochemical Cycling in Permeable
... this threshold is reached when permeability exceeds 10−12 m2 (Huettel & Rusch 2000, Huettel et al. 1996). In this review, we therefore define permeable sediments as those with a permeability greater than 10−12 m2 ; when this threshold is reached, interfacial solute fluxes deviate significantly from tho ...
... this threshold is reached when permeability exceeds 10−12 m2 (Huettel & Rusch 2000, Huettel et al. 1996). In this review, we therefore define permeable sediments as those with a permeability greater than 10−12 m2 ; when this threshold is reached, interfacial solute fluxes deviate significantly from tho ...
Full text in pdf format
... fueled by nutrient inputs originating from phytoplankton, are clearly reflected by bacterial growth in the mesopelagic zone. This implies that bacteria in the mesopelagic zone, and also those being introduced into this layer by sedimentation, have the capability to respond or adapt rapidly to nutrie ...
... fueled by nutrient inputs originating from phytoplankton, are clearly reflected by bacterial growth in the mesopelagic zone. This implies that bacteria in the mesopelagic zone, and also those being introduced into this layer by sedimentation, have the capability to respond or adapt rapidly to nutrie ...
Anaerobic Digestion Basics
... function in the 90˚F to 110˚F range. Thermophilic bacteria are most productive in the 120˚F to 140˚F range. Thermophilic digestion kills more pathogenic bacteria, but the cost to maintain a higher operating temperature is greater. Thermophilic digesters may also be less stable. ...
... function in the 90˚F to 110˚F range. Thermophilic bacteria are most productive in the 120˚F to 140˚F range. Thermophilic digestion kills more pathogenic bacteria, but the cost to maintain a higher operating temperature is greater. Thermophilic digesters may also be less stable. ...
Resource ratios determine nutrient limitation of primary productivity
... red circle in Figure 2 (a), see SI S8 and figure S9). ...
... red circle in Figure 2 (a), see SI S8 and figure S9). ...
Ocean Climate Indicators Status Report: 2015
... Sea surface salinity values are also used as indicators of upwelling, as high sea surface salinities can be a sign of nutrient inputs from deeper waters. Two climate change-related phenomena have become issues of concern for our coastal oceans: ocean acidification and hypoxia. Rising concentrations ...
... Sea surface salinity values are also used as indicators of upwelling, as high sea surface salinities can be a sign of nutrient inputs from deeper waters. Two climate change-related phenomena have become issues of concern for our coastal oceans: ocean acidification and hypoxia. Rising concentrations ...
Initiation of Subduction Zones as a Consequence
... Tonga and Mariana fore-arc peridotites, inferred to represent their respective sub-arc mantle lithospheres, are compositionally highly depleted (low Fe/Mg) and thus physically buoyant relative to abyssal peridotites representing normal oceanic lithosphere (high Fe/Mg) formed at ocean ridges. The obs ...
... Tonga and Mariana fore-arc peridotites, inferred to represent their respective sub-arc mantle lithospheres, are compositionally highly depleted (low Fe/Mg) and thus physically buoyant relative to abyssal peridotites representing normal oceanic lithosphere (high Fe/Mg) formed at ocean ridges. The obs ...
Reports - geo
... all of these will result in new governance mechanism. In conclusion, there is a need to shift from project-based observations to long-term time-series observations, to ensure full and open exchange of data, and to better coordinate projects and initiatives to ensure that they converge in meeting soc ...
... all of these will result in new governance mechanism. In conclusion, there is a need to shift from project-based observations to long-term time-series observations, to ensure full and open exchange of data, and to better coordinate projects and initiatives to ensure that they converge in meeting soc ...
Anoxic event
Oceanic anoxic events or anoxic events (Anoxia conditions) refer to intervals in the Earth's past where portions of oceans become depleted in oxygen (O2) at depths over a large geographic area. During some of these events, euxinia develops - euxinia refers to anoxic waters that contain H2S hydrogen sulfide. Although anoxic events have not happened for millions of years, the geological record shows that they happened many times in the past. Anoxic events coincide with several mass extinctions and may contribute to these events. These mass extinctions include some that geobiologists use as time markers in biostratigraphic dating. It is believed oceanic anoxic events are strongly linked to slowing of ocean circulation, climatic warming and elevated levels of greenhouse gases. Enhanced volcanism (through the release of CO2 and other greenhouse gases) is the proposed central external trigger for the development of these events.