Oceanography

Oceanic pollution

  1. Oceanic pollution refers to the contamination of the ocean environment due to human and natural activities.
  2. The major sources of oceanic pollution include industrial waste, agricultural runoff, oil spills, and plastic debris.
  3. Plastic pollution is a significant concern, with millions of tons of plastic entering oceans annually, forming large gyres like the Great Pacific Garbage Patch.
  4. Pollution from agricultural runoff introduces

Marine resources

  1. Marine resources refer to the materials and energy obtained from the ocean that support human life and economic activities.
  2. They are classified into biotic resources, such as fish and seaweed, and abiotic resources, like minerals and oil.
  3. The ocean is a major source of protein, with fisheries providing food for billions of people worldwide.
  4. Fish are the most significant biotic marine resource, with species like tuna, cod, and sardines being widely harvested.
  5. Aqua

Tides and waves

  1. Tides are the periodic rise and fall of sea levels caused by the gravitational forces of the Moon and the Sun, along with Earth's rotation.
  2. The Moon plays a more significant role in causing tides than the Sun due to its proximity to Earth.
  3. High tide occurs when the water level rises to its highest point.
  4. Low tide occurs when the water level falls to its lowest point.
  5. The interval between two high tides or two low tides is approximately 12 hours and 25 minutes

Ocean currents

  1. Ocean currents are large-scale movements of water within the world's oceans, driven by various forces.
  2. They play a critical role in regulating climate and distributing heat across the planet.
  3. Ocean currents are broadly categorized into surface currents and deep-water currents.
  4. Surface currents are primarily driven by wind and cover the upper layer of the ocean.
  5. Deep-water currents, also known as thermohaline circulation, are driven by differences in wate
Oceanography