Fiche de révision : Fundamentals of Physical Oceanography

📋 Course Outline

1. Physical Oceanography Laws
2. Ocean Motion Objects
3. Fluid Stratification
4. Convection Processes
5. Eddies and Waves
6. Seawater Physical Properties
7. Temperature and Salinity
8. Density and Stratification
9. Water Masses and Distribution
10. Ocean-Atmosphere Interaction
11. Wind and Ocean Currents
12. Coriolis Effect

📖 1. Physical Oceanography Laws

🔑 Key Concepts & Definitions

• Convection: The vertical movement of fluid caused by density differences, where lighter fluid rises and denser fluid sinks, leading to fluid mixing and instability.
• Eddies: Circular or spiral fluid motions resulting from instabilities in flow, often generated by wind shear or current shear, contributing to mixing and transport.
• Waves: Periodic oscillations in the fluid driven by restoring forces such as gravity or Earth's rotation, capable of transporting energy over large distances.
• Hydrostatic Equilibrium: The balance between the vertical pressure gradient force and gravity in a stationary ocean, resulting in horizontal isobaric surfaces.
• Navier-Stokes Equations: Fundamental equations describing fluid motion, incorporating forces like pressure, gravity, Coriolis effect, and viscous stresses.
• Reynolds Number (Re): A dimensionless quantity indicating flow regime; low Re signifies laminar flow, high Re indicates turbulence.

📝 Essential Points

• Physical laws such as Newton's laws govern ocean motion, linking forces and acceleration.
• Fluid stratification depends on density variations primarily driven by temperature and salinity.
• Convection occurs when density stratification is unstable, leading to vertical mixing.
• Eddies are generated by flow instabilities and wind/current shear, playing a key role in ocean mixing.
• Waves are categorized into planetary, surface, and internal waves, each with distinct restoring forces.
• The hydrostatic approximation simplifies vertical momentum equations, assuming vertical acceleration is negligible.
• The Navier-Stokes equations form the basis for modeling ocean dynamics, incorporating viscosity and turbulence.
• The Reynolds number determines whether flow is laminar or turbulent, influencing the importance of molecular viscosity.
• The Coriolis force causes deflection of moving fluids, shaping large-scale circulation patterns.
• Conservation laws (mass, momentum, energy, angular momentum) underpin the fundamental equations of oceanography.

💡 Key Takeaway

Physical oceanography laws describe how forces like gravity, pressure, Coriolis effect, and turbulence govern ocean motion, enabling understanding and prediction of complex circulation patterns and fluid behavior in the marine environment.

📖 2. Ocean Motion Objects

🔑 Key Concepts & Definitions

• Convection: The vertical movement of fluid caused by density differences, occurring when lighter fluid rises and denser fluid sinks to restore stability in stratified fluids.

• Eddies: Circular currents or whirlpools resulting from fluid instabilities, generated by wind shear or current shear, involving complex force balances.

• Waves: Periodic fluid motions caused by restoring forces such as gravity or density differences, transporting energy efficiently over large distances.

• Seawater Density: The mass per unit volume of seawater, influenced primarily by temperature and salinity, ranging from about 1022 kg/m³ at the surface to 1050 kg/m³ at depth.

• Thermal Expansion (β): The change in seawater specific volume in response to temperature variation, affecting density and ocean dynamics.

• Coriolis Force: An apparent force caused by Earth's rotation, deflecting moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, influencing ocean currents.

📝 Essential Points

• Ocean motion is governed by physical laws, notably Newton's laws, which describe how forces like pressure gradients, Coriolis effect, gravity, and friction influence fluid movement.

• Convection occurs when density stratification is unstable, leading to vertical mixing; stability requires density to decrease from bottom to top.

• Eddies are generated by instabilities in currents, playing a key role in mixing and energy transfer within the ocean.

• Waves vary in type: planetary (Rossby, Kelvin), surface (gravity), internal (density interface), and tsunamis, each with different restoring forces and scales.

• Seawater density depends on temperature, salinity, and pressure, with temperature being the dominant factor in most of the ocean, affecting sound speed, stratification, and circulation.

• The equation of state relates seawater density to temperature, salinity, and pressure, incorporating non-linear relationships and anomalies like water's unique thermal expansion behavior.

• Ocean currents are driven by wind stress, pressure gradients, Earth's rotation (Coriolis), and buoyancy, forming large-scale features like gyres and boundary currents.

• Hydrostatic equilibrium describes a state where pressure gradients balance gravity, resulting in horizontal isobaric surfaces aligned with geopotential surfaces.

💡 Key Takeaway

Ocean motion results from a complex interplay of physical forces and processes, with convection, waves, and currents shaping the dynamic behavior of seawater, governed by fundamental physical laws and Earth's rotation.

📖 3. Fluid Stratification

🔑 Key Concepts & Definitions

• Stratification: The layering of fluid due to variations in density, typically caused by differences in temperature, salinity, or both, resulting in distinct layers within the water column.

• Stable Stratification: A state where denser water lies beneath less dense water, preventing vertical mixing and maintaining layered structure.

• Unstable Stratification: Occurs when denser water is above less dense water, leading to buoyancy-driven mixing or convection as the system seeks stability.

• Density Gradient: The change in density with depth, which influences the stability and mixing processes in the water column.

• Brunt-Väisälä Frequency (N): The natural frequency at which a displaced parcel of fluid oscillates vertically within a stratified environment, indicating the stability of the stratification.

• Thermocline / Halocline: Sharp gradients in temperature (thermocline) or salinity (halocline) that create pronounced density stratification within specific layers of the ocean.

📝 Essential Points

• Fluid stratification is primarily driven by variations in temperature and salinity, which alter seawater density.

• Stable stratification inhibits vertical mixing, affecting nutrient transport, heat distribution, and biological productivity.

• The density gradient determines the potential for convection; a strong gradient favors stability, while a weak gradient can lead to mixing.

• The Brunt-Väisälä frequency quantifies the stability: higher values indicate a more stable stratification, reducing vertical motions.

• Internal waves propagate along density interfaces (e.g., thermoclines), playing a significant role in energy transfer and mixing in stratified waters.

• Stratification varies with depth, season, and geographic location, influencing ocean circulation patterns and climate interactions.

💡 Key Takeaway

Fluid stratification, governed by density differences, controls the vertical stability of the ocean, influencing mixing, energy transfer, and climate-related processes through its impact on internal waves and circulation dynamics.

📖 4. Convection Processes

🔑 Key Concepts & Definitions

• Convection: The vertical or horizontal transfer of heat and mass in a fluid caused by buoyancy differences, occurring when denser fluid sinks and less dense fluid rises, leading to fluid motion.
• Density Stratification: The layering of fluids based on density, with denser fluids typically at the bottom and less dense at the top, promoting stability.
• Instability: A state where the density distribution is inverted (denser fluid above lighter fluid), causing buoyant forces to induce fluid movement until stability is restored.
• Eddies: Circular or spiral fluid motions resulting from instabilities, often generated by wind shear or current shear, contributing to mixing.
• Waves: Periodic oscillations in fluid motion caused by restoring forces like gravity or surface tension, capable of transporting energy over large distances.
• Water Anomaly: The unique thermal property of water where it reaches maximum density at about 4°C, leading to unusual convection behavior in oceans.

📝 Essential Points

• Convection in oceans occurs when the stable density stratification is disturbed, leading to mixing and vertical transport of heat, salt, and nutrients.
• Instability arises when the density at the surface exceeds that at the bottom, causing lighter water to rise and denser water to sink, restoring stability.
• Eddies are generated from fluid instabilities and play a crucial role in ocean mixing, influencing climate and biological processes.
• Waves, including internal waves and surface waves, are driven by periodic forces and can efficiently transfer energy across vast distances.
• Water's anomalous thermal behavior (density maximum at 4°C) influences convection patterns, especially in polar regions and during seasonal changes.

💡 Key Takeaway

Convection is a fundamental process in ocean dynamics, driven by density differences and instabilities, responsible for mixing, heat transfer, and the redistribution of properties within the ocean.

📖 5. Eddies and Waves

🔑 Key Concepts & Definitions

• Eddies: Circular or spiral fluid motions resulting from instabilities in ocean currents, often generated by wind shear or current shear. They can transport heat, salt, and nutrients across large distances.

• Waves: Periodic oscillations of the water surface or internal layers, caused by restoring forces such as gravity or Earth's rotation. They transfer energy efficiently over vast areas.

• Internal Waves: Oscillations that occur within the ocean's interior layers, driven by density differences between water masses. They have longer wavelengths and periods compared to surface waves.

• Surface Waves (Gravity Waves): Waves on the ocean surface where gravity acts as the restoring force, including phenomena like tsunamis and wind-generated waves.

• Kelvin Waves: Coastal or equatorial waves trapped along boundaries or the equator, influenced by Earth's rotation, propagating without dispersing.

• Rossby Waves: Large-scale planetary waves driven by Earth's rotation and the variation of the Coriolis effect with latitude, restoring force being the conservation of potential vorticity.

📝 Essential Points

• Eddies are generated by fluid instabilities and are crucial for mixing and transporting properties like heat and salinity in the ocean.

• Waves are classified based on their restoring force: gravity (surface/internal waves) and Earth's rotation (Kelvin and Rossby waves).

• Internal waves influence nutrient mixing and sediment transport, often occurring at thermoclines or pycnoclines.

• Tsunamis are a special type of surface wave caused by seismic activity, characterized by long periods (~15 minutes) and destructive energy.

• Ocean currents, eddies, and waves interact dynamically, influencing climate, weather patterns, and marine ecosystems.

• The energy transfer by waves enables large-scale communication of energy across oceans, affecting global circulation patterns.

💡 Key Takeaway

Eddies and waves are fundamental ocean processes driven by physical instabilities and restoring forces, playing a vital role in ocean mixing, energy transfer, and climate regulation. Understanding their dynamics helps explain how the ocean influences Earth's environment on multiple scales.

📖 6. Seawater Physical Properties

🔑 Key Concepts & Definitions

• Seawater Composition: Mixture of approximately 96.5% pure water and 3.5% dissolved materials such as salts, gases, and organic substances.

• Temperature: A measure of the energy at the molecular level in seawater, primarily influencing density and sound speed; ranges from just below 0°C (due to salinity) up to about 30°C.

• Salinity: The concentration of dissolved salts in seawater, mainly derived from river runoff and weathering, typically expressed in practical salinity units (PSU).

• Density (ρ): The mass per unit volume of seawater, varying with temperature, salinity, and pressure; ranges from about 1022 kg/m³ at the surface to over 1050 kg/m³ at the bottom.

• Specific Volume (α): The reciprocal of density (α = 1/ρ), indicating the volume occupied by a unit mass of seawater; inversely related to density.

• Water Anomaly: The unusual behavior of water where, within certain temperature ranges, volume remains nearly constant despite temperature changes, due to thermal expansion properties.

• Compressibility (K): The measure of seawater's volume change under pressure; less compressible than pure water, especially significant in deep-sea conditions.

• Equation of State (EOS): Mathematical relationship linking seawater density to salinity, temperature, and pressure; used for precise calculations of seawater properties.

• Thermal Expansion Coefficient (β): The rate at which seawater's specific volume changes with temperature; varies with salinity and temperature.

• Hydrostatic Equilibrium: The state where the vertical pressure gradient balances gravity, resulting in horizontal isobaric surfaces parallel to geopotential surfaces.

📝 Essential Points

• Physical Properties Dominated by Pure Water: Seawater's physical characteristics are primarily determined by the 96.5% water component, with salts and gases influencing specific properties like salinity and density.

• Temperature and Salinity Effects: Temperature inversely affects seawater density (warmer water is less dense), while salinity directly increases density; their combined effects determine stratification and circulation.

• Density Variations: Density increases with higher salinity and lower temperature; pressure influences density mainly in deep ocean layers (>1000 m).

• Equation of State: Seawater density is non-linear with respect to salinity, temperature, and pressure, requiring complex algorithms for accurate modeling.

• Water Anomaly & Thermal Expansion: Water exhibits a unique thermal expansion pattern; within certain temperature ranges, volume remains relatively constant despite temperature changes, affecting ocean dynamics.

• Compressibility & Deep Ocean: Seawater's compressibility is low but significant in deep-sea conditions, influencing sound speed and pressure distribution.

• Hydrostatic Balance: Vertical pressure in the ocean results from the weight of overlying water, maintaining stable stratification and influencing ocean circulation.

💡 Key Takeaway

Seawater's physical properties—mainly temperature, salinity, and density—are interconnected factors that govern ocean stratification, circulation, and energy transfer, forming the foundation for understanding physical oceanography processes.

📖 7. Temperature and Salinity

🔑 Key Concepts & Definitions

• Temperature: A measure of the energy at the molecular level within seawater, influencing density and sound speed. Range typically from just below 0°C (freezing point) to about 30-31°C.
• Salinity: The concentration of dissolved salts in seawater, primarily determined by freshwater input and oceanic processes. Expressed in practical salinity units (PSU) or parts per thousand (ppt).
• Seawater Density (ρ): The mass per unit volume of seawater, affected by temperature and salinity; ranges from about 1022 kg/m³ at the surface to 1050 kg/m³ at depth.
• Thermal Expansion (β): The change in specific volume of seawater per unit change in temperature; influences buoyancy and stratification.
• Equation of State of Seawater: Mathematical relationship linking seawater density to temperature, salinity, and pressure, often calculated using UNESCO algorithms.
• Water Anomaly: The unusual behavior of water where its volume remains nearly constant despite temperature increases within certain ranges, due to water's unique thermal properties.

📝 Essential Points

• Temperature's Role: Primary determinant of seawater density in most of the ocean; influences sound speed, circulation, and stratification.
• Salinity's Role: Affects seawater density, especially in high-latitude regions; mainly controlled by freshwater fluxes like river runoff, precipitation, and ice melting.
• Density Relationship: Warm water is less dense, cold water is denser; higher salinity increases density. The combined effect depends on temperature and salinity variations.
• Thermal Expansion Coefficient (β): Varies with temperature and salinity; critical for understanding buoyancy and stability.
• Water Anomaly: Water's volume remains nearly unchanged over a temperature range, contrary to most substances, due to its unique molecular structure.
• Equation of State: Used to calculate seawater density based on temperature, salinity, and pressure; essential for modeling ocean circulation.
• Density Stratification: Variations in temperature and salinity create layers in the ocean, influencing mixing and circulation patterns.

💡 Key Takeaway

Seawater's temperature and salinity are fundamental properties that determine its density, stratification, and circulation, with water's unique thermal behavior playing a crucial role in ocean dynamics and climate regulation.

📖 8. Density and Stratification

🔑 Key Concepts & Definitions

• Density: The mass of seawater per unit volume, typically expressed in kg/m³. It influences buoyancy and stratification in the ocean.

• Stratification: The layering of water masses in the ocean due to differences in density, creating distinct vertical zones.

• Stable Stratification: A state where density increases with depth, preventing vertical mixing; lighter water remains on top of denser water.

• Convection: Vertical fluid movement driven by density differences, occurring when denser water rises or lighter water sinks, disrupting stability.

• Water Mass: A body of seawater with uniform physical properties (temperature, salinity, density) that can be traced over large distances.

• Water Anomaly: The unusual behavior of water's volume change with temperature, notably its expansion properties, affecting density.

📝 Essential Points

• Density Determinants: Primarily affected by temperature and salinity; colder and saltier water is denser.

• Temperature and Salinity Relationship: Temperature inversely affects density (warmer water is less dense), while salinity directly affects density (more saltier water is denser).

• Density Distribution: Varies with depth; surface waters are generally warmer and less dense, while deeper waters are colder and denser.

• Stratification Stability: Achieved when density decreases upward; instability occurs if denser water overlays lighter water, leading to convection.

• Water Density Equation: Seawater density (ρ) is a nonlinear function of salinity (S), temperature (T), and pressure (p), often calculated using the UNESCO algorithm.

• Water Anomaly: Water exhibits a unique thermal expansion behavior, with minimal volume change over certain temperature ranges, influencing stratification.

• Implications of Stratification: Affects ocean circulation, mixing processes, heat transfer, nutrient distribution, and biological productivity.

💡 Key Takeaway

Density and stratification are fundamental to understanding ocean structure and dynamics, with temperature and salinity controlling vertical layering and stability, which in turn influence ocean circulation and climate processes.

📖 9. Water Masses and Distribution

🔑 Key Concepts & Definitions

• Water Mass: A large body of seawater with relatively uniform temperature and salinity, which influences its density and properties.
• Thermocline: A layer in the ocean where temperature changes rapidly with depth, separating warmer surface water from colder deep water.
• Halocline: A layer characterized by a rapid change in salinity with depth, affecting water density and stratification.
• Pycnocline: A zone where water density increases sharply with depth, often coinciding with thermoclines and haloclines.
• Water Mass Formation: The process where specific water properties (temperature, salinity) are acquired through surface processes like cooling, evaporation, or mixing, leading to distinct water masses.
• Distribution of Water Masses: The spatial arrangement of different water masses across ocean basins, influenced by currents, temperature, salinity, and geographic features.

📝 Essential Points

• Water masses are classified based on their temperature and salinity characteristics, which determine their density and movement.
• Major water masses include Surface Water, Intermediate Water, Deep Water, and Bottom Water, each with distinct properties.
• Water mass formation occurs primarily through surface cooling, evaporation, or mixing, often in polar or high-latitude regions.
• The distribution of water masses influences ocean circulation patterns, climate regulation, and nutrient transport.
• Thermohaline circulation (global conveyor belt) drives the movement of water masses, connecting surface and deep ocean layers globally.
• Water masses tend to maintain their properties over long distances, but mixing and interactions can modify their characteristics.

💡 Key Takeaway

Water masses, defined by their temperature and salinity, form the foundation of ocean stratification and circulation, playing a crucial role in regulating climate, nutrient cycling, and ocean dynamics. Their distribution reflects the complex interplay of surface processes and large-scale currents.

📖 10. Ocean-Atmosphere Interaction

🔑 Key Concepts & Definitions

• Ocean-Atmosphere System: Interdependent global system where oceanic and atmospheric processes influence each other, affecting climate, weather, and ocean currents.

• Coriolis Effect: The deflection of moving air and water masses caused by Earth's rotation, directing winds and currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

• Heat Transfer: Movement of thermal energy between ocean and atmosphere through processes like radiation, conduction, convection, and latent heat flux, crucial for climate regulation.

• Surface Winds: Winds blowing across the ocean surface that generate currents, waves, and influence heat and moisture exchange between ocean and atmosphere.

• Ocean Currents: Large-scale flows of seawater driven by wind, Earth's rotation, and density differences, transporting heat and influencing climate patterns.

• Tidal Dynamics: The gravitational pull of the moon and sun causes periodic rise and fall of sea levels, affecting ocean circulation and energy distribution.

📝 Essential Points

• The Earth's tilt and rotation create seasons and influence the distribution of solar energy, which drives atmospheric and oceanic circulation patterns.

• Wind belts (e.g., trade winds, westerlies) are fundamental in generating ocean currents through wind stress and are affected by the Coriolis effect.

• Ocean currents, such as the Gulf Stream and Kuroshio, transport warm water from equatorial to polar regions, impacting regional climates.

• The atmosphere transfers heat and moisture via processes like evaporation, condensation, and longwave radiation, affecting weather and climate.

• Ocean-atmosphere interactions are central to phenomena like monsoons, El Niño-Southern Oscillation (ENSO), and hurricanes.

• Variations in solar heating, Earth's rotation, and atmospheric composition create complex feedback mechanisms influencing global climate systems.

💡 Key Takeaway

Ocean-atmosphere interactions form a dynamic system that regulates Earth's climate, with wind-driven currents, heat exchange, and Earth's rotation playing critical roles in shaping weather patterns and long-term climate variability.

📖 11. Wind and Ocean Currents

🔑 Key Concepts & Definitions

• Ocean Currents: Large-scale flows of seawater that move continuously through the world's oceans, driven by wind, Earth's rotation, and differences in water density.

• Surface Currents: Ocean currents that occur in the upper 400 meters of the ocean, primarily influenced by wind patterns and the Coriolis effect.

• Thermohaline Circulation: A global-scale deep ocean circulation driven by variations in water density, controlled by temperature (thermo) and salinity (haline).

• Coriolis Effect: The deflection of moving objects (including air and water masses) caused by Earth's rotation, directing currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

• Gyres: Large, circular ocean currents formed by the combined effect of wind patterns and the Coriolis effect, typically found in the major ocean basins.

• Ekman Transport: The net movement of water caused by wind-driven surface currents, resulting from the balance between wind stress and Coriolis force, leading to a spiral of flow with depth.

📝 Essential Points

• Driving Forces: Wind is the primary driver of surface currents, while density differences (temperature and salinity) drive thermohaline circulation.

• Wind Patterns & Currents: Major wind belts (e.g., trade winds, westerlies) generate predictable surface currents, forming gyres that influence climate and marine navigation.

• Coriolis Effect: Causes deflection of currents, shaping the direction of gyres and influencing the formation of coastal currents like the California and Gulf Stream currents.

• Boundary Currents: Fast, narrow currents along continental margins (e.g., Kuroshio, Gulf Stream) that transfer heat poleward or equatorward.

• Internal Waves & Tidal Currents: Waves within the ocean interior and horizontal flows caused by tidal forces, affecting sediment transport and nutrient mixing.

• Global Impact: Ocean currents regulate climate by redistributing heat, influence weather patterns, and impact marine ecosystems.

💡 Key Takeaway

Ocean currents, driven by wind, Earth's rotation, and density differences, are vital in regulating global climate, distributing nutrients, and shaping marine environments through complex dynamic processes.

📖 12. Coriolis Effect

🔑 Key Concepts & Definitions

• Coriolis Force: An apparent force caused by Earth's rotation that deflects moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. It affects the trajectory of fluids and objects on a rotating Earth.

• Coriolis Parameter (f): A measure of the Coriolis effect at a specific latitude, defined as $f = 2 \Omega \sin \theta$, where $\Omega$ is Earth's rotation rate and $\theta$ is latitude. It determines the magnitude of deflection.

• Geostrophic Balance: A state where the Coriolis force balances the horizontal pressure gradient force, resulting in a steady flow parallel to isobars, crucial in large-scale ocean and atmospheric circulation.

• Inertial Motion: The movement of an object in a straight line at constant speed in the absence of external forces, but on Earth, Coriolis force causes this motion to curve.

• Rossby Waves: Large-scale planetary waves influenced by the Coriolis effect, restoring forces due to Earth's rotation that modulate ocean and atmospheric patterns.

• Tidal and Wind-Driven Currents: Ocean currents affected by the Coriolis effect, shaping the formation of gyres, boundary currents, and eddies.

📝 Essential Points

• The Coriolis effect is a consequence of Earth's rotation, not a real force, but it significantly influences the motion of fluids in the atmosphere and oceans.

• The deflection increases with latitude, being zero at the equator and maximum at the poles.

• It causes large-scale oceanic features such as gyres and influences the direction of major currents like the Gulf Stream and Kuroshio.

• The Coriolis force is incorporated into the fundamental equations of ocean dynamics, notably in the geostrophic and beta-plane approximations.

• In the absence of other forces, the Coriolis effect causes moving water parcels to turn, impacting weather systems, ocean circulation, and the formation of waves.

💡 Key Takeaway

The Coriolis effect is a fundamental force arising from Earth's rotation that deflects moving fluids and objects, shaping large-scale ocean and atmospheric circulation patterns critical to climate and environmental systems.

📊 Synthesis Tables

⚠️ Common Pitfalls & Confusions

1. Confusing convection with simple mixing; convection involves buoyancy-driven vertical movement, not just turbulence.
2. Assuming stable stratification always prevents any vertical motion; internal waves can still propagate.
3. Misinterpreting the role of the Brunt-Väisälä frequency; high N indicates stability, not instability.
4. Overlooking the influence of salinity in density stratification; temperature is often emphasized but salinity can be dominant in some regions.
5. Mistaking internal waves for surface waves; they propagate along density interfaces within the water column.
6. Assuming convection only occurs at the surface; it can happen at depth, especially in polar regions or during winter.
7. Ignoring the effect of Earth's rotation on large-scale convection patterns and internal wave propagation.

✅ Exam Checklist

• Understand the fundamental physical laws governing ocean motion, including Newton's laws and hydrostatic equilibrium.
• Define and differentiate between convection, eddies, and waves in the ocean context.
• Describe how seawater density depends on temperature, salinity, and pressure, including the concept of the equation of state.
• Explain the processes and conditions leading to fluid stratification, including stable and unstable configurations.
• Calculate and interpret the Brunt-Väisälä frequency for stratification stability.
• Identify different types of internal waves and their significance in ocean dynamics.
• Recognize the role of the Coriolis force in shaping large-scale ocean circulation.
• Describe the generation and effects of eddies and their contribution to mixing.
• Understand the physical properties of seawater, including temperature, salinity, and density variations.
• Explain how wind stress, pressure gradients, and Earth's rotation drive ocean currents.
• Describe the hydrostatic approximation and its application in ocean modeling.
• Recognize the impact of internal waves and stratification on nutrient transport and climate.
• Be able to compare and contrast the different types of ocean waves and their restoring forces.
• Understand the importance of Reynolds number in determining flow regimes (laminar vs turbulent).
• Be familiar with the distribution and characteristics of water masses in the ocean.
• Comprehend the interactions between the ocean and atmosphere, including heat and moisture exchange.
• Know the effects of the Coriolis force on moving ocean objects and circulation patterns.
• Be able to explain the processes of convection and stratification in the context of ocean stability and mixing.