Marine Bio CH 2
Terms
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- Anoxia
- without oxygen
- Upwelling
- the process that carries nutrient-rich subsurface water upward to the photic zone
- Semidiurnal tides
- tidal patterns with 2 high tides and two low tides each lunar day
- Fjords
- a deep coastal embayment caused by glacial erosion
- Spring tides
- extremely high tides and low tides that alternate with neap tides and recur every 2 weeks
- Oceanic province
- the portion of the marine environment that overlies the deep ocean basins
- Tidal range
- vertical distance between high and low tides
- Low tide
- the lowest level reached by the falling tide
- Trade winds
- subtropical winds that blow from northeast to southwest in the northern hemisphere and from southeast to northwest in the southern hemisphere
- Countercurrent
- an ocean current that flows directly back into another current
- Tide
- a long period wave noticeable as a periodic rise and fall of the sea surface along coastlines
- O3 minimum zone
- the ocean layer below the photic zone dissolved oxygen concentration is lowest
- Fetch
- the extent of the ocean over which winds blow to create waves
- Pelagic division
- pertaining to the waters of the ocean and the organisms that inhabit the water column
- Mixed semidiurnal division
- tidal pattern during a lunar day with unequal high tides and unequal low tides
- Surface currents
- long-term directional flow of water at the sea surface
- Photic zone
- the portion of the ocean where light intensity is sufficient to accommodate plant growth
- Coriolis effect
- changes in direction in moving objects based on the rotating of the earth
- Continental boundary current
- a surface ocean current flowing generally north or south along a continental edge
- Atmosphere
- a unit of pressure equal to 14.7 lb/in and equivalent to the pressure created by a 10 m column of water
- Period
- in ocean waves, the time required for 2 successive waves to pass a reference point
- Wave
- a periodic, traveling undulation of the sea surface
- Diurnal tides
- a tidal pattern with one high tide and one low tide each lunar day
- Buffer
- a chemical substance that tends to limit changes in pH levels
- High tide
- the highest tide level reached by the rising tide
- Polar easterlies
- winds that blow from east to west at very high latitudes
- Aphotic zone
- the portion of the ocean where the absence of sunlight prevents plant growth
- Westerlies
- winds that blow primarily from the west in the mid-latitudes
- Intertidal effects
- the vertical extent of the shoreline between the high and low tide lines
- Gyre
- the large loop of interconnected surface ocean currents within a single ocean basin usually spanning 20 to 30 in latitude
- Neap tides
- sets of moderate tides that alternate with spring tides and recur every two weeks
- Neritic province
- the portion of the marine environment that overlies the continental shelf
- Benthic division
- pertaining to the sea bottom and the organism that live there