Shared Flashcard Set

Details

Marine Biology Chap 02
The Oceanic Environment
20
Biology
Undergraduate 3
03/03/2009

Additional Biology Flashcards

 


 

Cards

Term
Mid-Ocean Ridge
Definition
A sinuous ridge rising from the deep-sea floor
Term
Gyre
Definition
Major cyclonic surface current systems in the oceans
Term
Specific Heat
Definition
The amount of heat per unit mass required to raise the temperature by one degree Celsius
Term
Ekman Transport
Definition
Movement of surface water at an angle from the wind, as a result of the Coriolis effect
Term
Heat of Vaporization (water)
Definition
The amount of heat required to convert a unit mass of water at its boiling point into vapor without an increase in temperature
Term
Oceanic Boundary Currents
Definition
Well defined currents with strong thermal boundaries between the current and the surrounding oceanic water; caused by winds combined with the earth's rotation and result in large-scale transport of surface water from the tropics to higher latitudes
Term
Thermocline
Definition
Depth zone within which temperature changes maximally
Term
Upwelling
Definition
The movement of nutrient-rich water from a specified depth to the surface, usually driven by surface winds
Term
Salinity
Definition
Number of kilograms of dissolved salkts in 1 kg of seawater, measured in parts per thousands; stands alongside another definition based upon water standards whose electricle conductivities are measured
Term
Density (seawater)
Definition
Grams of seawater in one cubic centimeter of fluid
Term
Principle of Constant Proportions
Definition
The ratio of major salts in samples of seawater is constant globally
Term
Pycnocline
Definition
Depth zone witin which seawater density changes
Term
Residence Time
Definition
The time a unit of a substance spends in a specified location in the environment; ie the residence time of sodium in the Antarctic bottom water
Term
Longshore Current
Definition
A current moving parallel to a shoreline
Term
Practical Salinity Unit (PSU)
Definition
A measure of the salt content of seawater (practical salinity), based upon electrical conductivity of a sample relative to a reference standard of seawater at one atm pressure and 15 degree C temperature; the reference in a set of diluted seawater samples from the N. Atlantic of known salt content.
Term
Rip Current
Definition
A concentrated rapid current moving offshore from a beach fronting a longshore current
Term
Oxygen Minimum Layer
Definition
A depth zone, usually below the thermocline, in which dissolved oxygen is minimal
Term
Tides
Definition
Periodic movemtn of water resulting from gravitational attraction between the earth, sun and moon
Term
Coriolis Effect
Definition
The deflection of air or water bodies, relative to the solid earth beneath, as a result of the earth's eastward rotation
Term
Trade Winds
Definition
Persistent winds at low latitudes in both the Northern and Southern hemispheres, blowing toward the west and the equator
Supporting users have an ad free experience!