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This percentage of the sea floor is mapped at high resolution
20 percent
The constant change in depth from one isobath to the next
relief
This Realm contains all of the water in the ocean.
The Pelagic Realm
This zone gets the most sunlight.
Yes sunlight zone but more importantly its the photic zone
A reason why it is important to have maps of the sea floor
for navigation of ships and subs
Mapping technique used to create most of the high resolution ocean maps
Multi-beam echo sounder
This Realm contains all of the seafloor
The Benthic Realm
If you are at a depth of 7000m which zone are you in?
The Hadal Zone
technology used to map the ocean today
Sonar
The lowest resolution map of the sea floor is generated by
Echo sounder (smallest are of information)
Satellite altimetry (only shows largest features)
Lines that connect points of equal depth
Isobath
If you are at a depth of 4150m you are in this zone
Abyssal zone
This is a major risk associated with Seismic Surveying
killing the whales!!!!!
Equation used to calculate depth using sonar
depth=1/2 t* V
v=1524m/s
If you see a "v" on a bathymetric map then there is a...
Canyon
As depth increases....
Temperature...
Pressure...
Sunlight...
Decreases
Increases
Decreases
If i want to find a shipwreck im using this type of sonar device
Side scanning sonar
the depth of the ocean floor when the depth sounding is 4 seconds
3048 m
When you see circles on a bathymetric map this could be one of two possible features.
Basin or seamount
In this zone we start to see organism without eyes.
The Bathyal zone