Oceans and Coastal Management: In-depth Notes

  • Importance of Oceans

    • Oceans cover over 70% of the Earth’s surface.
    • They influence human activities and climatic conditions.
    • Key concepts:
    • Physical characteristics and processes of ocean systems.
    • Resource bases and management issues.
    • Geographical concepts: processes, power, possibilities.

  • Ocean-Atmosphere Interactions

    • Key Concept: How do physical processes link atmospheric and ocean systems?
    • Key Content:
    • Ocean currents, nutrient and energy transfers, the oceanic conveyor belt.
    • ENSO cycles (El Niño and La Niña), their climatic and economic effects.
    • Hurricane formation and their impacts, including storm surges.
    • Oceans as carbon dioxide reservoirs and effects of ocean acidification.

  • Ocean Currents

    • Characteristics of Ocean Currents:
    • Generated by wind; patterns affected by wind direction, Coriolis effect, and landforms.
    • Upwelling and deep ocean currents transport nutrients and heat.
    • Specific events like storms and earthquakes can cause significant water movement.
    • Ocean Nutrient Cycles: Sources, storage, and transportation of nutrients.

  • El Niño and La Niña Cycles

    • Changes in ocean temperature and atmospheric interactions.
    • Impact assessment of these cycles on social, economic, and environmental factors.

  • Hurricane Distribution and Impacts

    • Formation and Distribution:
    • Tropical storms follow predictable patterns based on warm water environments.
    • Effects include severe storms and storm surges.
    • Case Studies: Conduct assessments of specific hurricanes.

  • Changing Role of Oceans

    • Ocean temperature changes and their implications for the carbon cycle.
    • Ocean acidification effects on coral reefs.

  • Interactions Between Oceans and Coastal Places

    • Physical influences on coastal landscapes: waves, tides, sediment supply, and vegetation.
    • Landforms: erosion and deposition processes, including bays and headlands.
    • Coastal management: advancing and retreating coastlines.

  • Sand Dune Development

    • Formation of sand dunes influenced by wind, waves, beach profiles, and relief.
    • Different sand dune stages from embryo dunes to fixed dunes and their ecological implications.

  • Managing Coastal Margins

    • Strategies for managing coastal erosion and flooding: hard and soft engineering approaches.
    • Conflicting land use pressures and stakeholder perspectives in coastal management.

  • Coral Reefs and Mangrove Management

    • Ecosystems' importance: stakeholders' values and conservation efforts.
    • Issues in sustainable management and protective measures for these environments.

  • Sovereignty and Exclusive Economic Zones (EEZs)

    • Understanding maritime zones and jurisdiction issues related to territorial waters.
    • Conflicts arising from overlapping EEZs and their implications for national and international governance.

  • Ocean Management Futures

    • Increasing demand for ocean resources: implications of resource exploitation and management.
    • Addressing the need for sustainable practices amid environmental pressures like pollution.

  • Biotic Resource Use and Overfishing

    • Impact of fishing practices and conservation measures against overfishing.
    • Importance of sustainable fisheries and management practices for marine biodiversity.