Oxidation-Reduction Processes in Natural Waters
... Organisms catalyze all significant redox reaction in natural waters. As illustrated in the table, with the exception of photosynthesis and hydrogen generation, all of the reactions in the table are thermodynamically favorable as written. That is, the reactions as written have a negative free energy. ...
... Organisms catalyze all significant redox reaction in natural waters. As illustrated in the table, with the exception of photosynthesis and hydrogen generation, all of the reactions in the table are thermodynamically favorable as written. That is, the reactions as written have a negative free energy. ...
Pomeroy, L. R., 1974. The ocean`s food web, a changing paradigm
... for half of the total degradation of organic matter in the ocean. They estimate that the consumption of glucose and amino acids by microorganisms amounted to 35% of total annual primary production. When glycolate and other carbohydrates are included, the total could indeed be 50%. This is beginning ...
... for half of the total degradation of organic matter in the ocean. They estimate that the consumption of glucose and amino acids by microorganisms amounted to 35% of total annual primary production. When glycolate and other carbohydrates are included, the total could indeed be 50%. This is beginning ...
Tectonic Plates &
... What role does the ocean play in the long-term average state of the atmosphere? The ocean plays a key role in the global radiation budget, the transport of heat between Earth’s surface and atmosphere; the flow of heat from the tropics to the higher latitudes, and the development of storm systems. We ...
... What role does the ocean play in the long-term average state of the atmosphere? The ocean plays a key role in the global radiation budget, the transport of heat between Earth’s surface and atmosphere; the flow of heat from the tropics to the higher latitudes, and the development of storm systems. We ...
Course 2.2. Organic matter
... In water quality monitoring we can express concentration as: •Based on the molecule, so mg NH4/L (M.W. = 14 + 4 =18) (rounded off) •Based on the atom(s), so mg NH4-N/L (Atomic weight A.W. = 14) So a water quality of 1.0 mg NH4/L corresponds to 0.78 mg NH4- N/L . Similarly: the Worlds Health Organiza ...
... In water quality monitoring we can express concentration as: •Based on the molecule, so mg NH4/L (M.W. = 14 + 4 =18) (rounded off) •Based on the atom(s), so mg NH4-N/L (Atomic weight A.W. = 14) So a water quality of 1.0 mg NH4/L corresponds to 0.78 mg NH4- N/L . Similarly: the Worlds Health Organiza ...
Section 2 The Ocean Floor
... They may form where magma pushes its way between tectonic plates. As the magma cools and builds up, it forms a mountain. Seamounts can also form far away from a tectonic plate boundary. Areas of volcanic activity within the interior of tectonic plates are called hot spots. At a hot spot, magma rises ...
... They may form where magma pushes its way between tectonic plates. As the magma cools and builds up, it forms a mountain. Seamounts can also form far away from a tectonic plate boundary. Areas of volcanic activity within the interior of tectonic plates are called hot spots. At a hot spot, magma rises ...
ocean observing and exploration - Consortium for Ocean Leadership
... Ocean Leadership has a proven track record of shaping the future of ocean science and technology through discovery, understanding and action. Representing institutions in 29 U.S. states, Washington, D.C., Australia, Bermuda and Canada, while managing over a billion dollars in science funding since i ...
... Ocean Leadership has a proven track record of shaping the future of ocean science and technology through discovery, understanding and action. Representing institutions in 29 U.S. states, Washington, D.C., Australia, Bermuda and Canada, while managing over a billion dollars in science funding since i ...
Plate Tectonics
... Fossils of the plant Glossopteris are found in rocks in South Africa, India, Australia, South America, and Antarctica ...
... Fossils of the plant Glossopteris are found in rocks in South Africa, India, Australia, South America, and Antarctica ...
3 - Sea Floor Spreading
... 1960s – the theory of seafloor spreading proposed to explain presence of midocean ridge. – SONAR (sound, navigation, and range) used to map the ocean floor – A system of underwater mountain ranges discovered around the world ...
... 1960s – the theory of seafloor spreading proposed to explain presence of midocean ridge. – SONAR (sound, navigation, and range) used to map the ocean floor – A system of underwater mountain ranges discovered around the world ...
The Earth
... • Oceanic = 2 plates made of oceanic crust collide – One plate is pushed under the other – Subduction zone – region where one plate slides under another plate – A deep canyon (trench) forms under the ocean where the plates meet – The plate sinks into the hot mantle and melts to form magma – Creates ...
... • Oceanic = 2 plates made of oceanic crust collide – One plate is pushed under the other – Subduction zone – region where one plate slides under another plate – A deep canyon (trench) forms under the ocean where the plates meet – The plate sinks into the hot mantle and melts to form magma – Creates ...
The Earth
... • Oceanic = 2 plates made of oceanic crust collide – One plate is pushed under the other – Subduction zone – region where one plate slides under another plate – A deep canyon (trench) forms under the ocean where the plates meet – The plate sinks into the hot mantle and melts to form magma – Creates ...
... • Oceanic = 2 plates made of oceanic crust collide – One plate is pushed under the other – Subduction zone – region where one plate slides under another plate – A deep canyon (trench) forms under the ocean where the plates meet – The plate sinks into the hot mantle and melts to form magma – Creates ...
restless continents text
... on continents that are on different sides of the Atlantic Ocean. Many of these ancient species could not have crossed the Atlantic Ocean. As you can see in Figure 1, without continental drift, this pattern of fossils would be hard to explain. In addition to fossils, similar types of rock and evidenc ...
... on continents that are on different sides of the Atlantic Ocean. Many of these ancient species could not have crossed the Atlantic Ocean. As you can see in Figure 1, without continental drift, this pattern of fossils would be hard to explain. In addition to fossils, similar types of rock and evidenc ...
ADVANCED LEVEL GEOGRAPHY
... Ocean-- the Philippines Trench (over 11km deep). It is produced by the subduction of the Pacific plate beneath the Philippine plate. -- There is cycling of material : At collision plate boundaries, denser oceanic crust is squeezed down and melts in the magma of the mantle. It is consumed, hence des ...
... Ocean-- the Philippines Trench (over 11km deep). It is produced by the subduction of the Pacific plate beneath the Philippine plate. -- There is cycling of material : At collision plate boundaries, denser oceanic crust is squeezed down and melts in the magma of the mantle. It is consumed, hence des ...
Plate Tectonics and the Dynamic Earth
... Oceanic and Continental Plates The oceanic plate subducts below the less dense continental plate Descent of the oceanic plate causes earthquakes The subducting plate melts into the asthenosphere fueling volcanic activity Example: West coast of South America ...
... Oceanic and Continental Plates The oceanic plate subducts below the less dense continental plate Descent of the oceanic plate causes earthquakes The subducting plate melts into the asthenosphere fueling volcanic activity Example: West coast of South America ...
Chapter 13 Section 3 Life in the Ocean
... Characteristics of Ocean Water, continued • Salinity is a measure of the amount of dissolved solids in a given amount of liquid. • Changes in Salinity Climate and water movement affect salinity. Costal water in cool, humid places has a low salinity. Slow-moving bodies of water have higher salinity t ...
... Characteristics of Ocean Water, continued • Salinity is a measure of the amount of dissolved solids in a given amount of liquid. • Changes in Salinity Climate and water movement affect salinity. Costal water in cool, humid places has a low salinity. Slow-moving bodies of water have higher salinity t ...
Ocean Basin Profile
... A theoretical cooling model of the oceanic lithosphere can be derived from the theory of the flow of heat through solids. The theory indicates that the ocean depth should increase away from the ridge approximately following the equation: Depth = slope • SQRT (age) + y-intercept. The theory is furthe ...
... A theoretical cooling model of the oceanic lithosphere can be derived from the theory of the flow of heat through solids. The theory indicates that the ocean depth should increase away from the ridge approximately following the equation: Depth = slope • SQRT (age) + y-intercept. The theory is furthe ...
Ocean Basin Profiles Description
... A theoretical cooling model of the oceanic lithosphere can be derived from the theory of the flow of heat through solids. The theory indicates that the ocean depth should increase away from the ridge approximately following the equation: Depth = slope • SQRT (age) + y-intercept. The theory is furthe ...
... A theoretical cooling model of the oceanic lithosphere can be derived from the theory of the flow of heat through solids. The theory indicates that the ocean depth should increase away from the ridge approximately following the equation: Depth = slope • SQRT (age) + y-intercept. The theory is furthe ...
Dispersal of Plants and Animals to Oceanic Islands
... biology; this title includes extensive discussion and exemplification of dispersal, particularly in the context of tropical Pacific islands, especially Hawaii.] Fridriksson S. (1975). Surtsey. Evolution of Life on a Volcanic Island, 198 pp. London: Butterworths. [A detailed, illustrated account of t ...
... biology; this title includes extensive discussion and exemplification of dispersal, particularly in the context of tropical Pacific islands, especially Hawaii.] Fridriksson S. (1975). Surtsey. Evolution of Life on a Volcanic Island, 198 pp. London: Butterworths. [A detailed, illustrated account of t ...
Mid-ocean Ridge Spreading
... In the real mid-ocean, there is not an opening between the plates. At slower spreading ridges, like the northern Mid-Atlantic Ridge, the seafloor behaves like nougat or cold chocolate bars – when it gets pulled enough it cracks and breaks. The ocean crust at slow spreading ridges breaks in to ridges ...
... In the real mid-ocean, there is not an opening between the plates. At slower spreading ridges, like the northern Mid-Atlantic Ridge, the seafloor behaves like nougat or cold chocolate bars – when it gets pulled enough it cracks and breaks. The ocean crust at slow spreading ridges breaks in to ridges ...
Place the two squares of fruit roll up
... represents continental crust, which is thicker and less dense than the oceanic crust (fruit roll up). It floats high on the asthenosphere so don’t push down. ...
... represents continental crust, which is thicker and less dense than the oceanic crust (fruit roll up). It floats high on the asthenosphere so don’t push down. ...
No Plumes Along Mid-Ocean Ridges
... Also, if MgO is relatively uniform but allowed to vary slightly, Na 2O varies positively with FeO during progressive fractional melting of ascending mantle source material (Presnall & Gudfinnsson, 2007). In this modeling, the inverse variation of Na8 vs. Fe8 is caused by mantle heterogeneity rather ...
... Also, if MgO is relatively uniform but allowed to vary slightly, Na 2O varies positively with FeO during progressive fractional melting of ascending mantle source material (Presnall & Gudfinnsson, 2007). In this modeling, the inverse variation of Na8 vs. Fe8 is caused by mantle heterogeneity rather ...
Slab Ocean El Niño atmospheric feedbacks in Coupled Climate
... ECHAM5-AGCM coupled to a slab ocean model. In fact, atmospheric feedbacks crucial to the Slab Ocean El Niño can also be found in many state-of-the-art coupled climate models participating in CMIP3 and CMIP5, so that ENSO in many CMIP models can be understood as a mixed recharge oscillator/Slab Ocean ...
... ECHAM5-AGCM coupled to a slab ocean model. In fact, atmospheric feedbacks crucial to the Slab Ocean El Niño can also be found in many state-of-the-art coupled climate models participating in CMIP3 and CMIP5, so that ENSO in many CMIP models can be understood as a mixed recharge oscillator/Slab Ocean ...
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.