1. geological oceanography ocean topography. two sad jokes q: why don't aliens eat clowns. a:...
TRANSCRIPT
![Page 1: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/1.jpg)
1. Geological OceanographyOcean Topography
![Page 2: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/2.jpg)
Two Sad Jokes
• Q: Why don't aliens eat clowns.• A: Because they taste funny.
• Two snowmen are standing in a field. One says to the other: "Funny, I smell carrots too".
![Page 3: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/3.jpg)
Topography refers to the shape on the land…in this case, the ocean
basins.What do ocean basins look like?
![Page 4: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/4.jpg)
![Page 5: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/5.jpg)
How do we know what it looks like?
![Page 6: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/6.jpg)
The ocean basin: Structures1. Continental Margin: Continental Shelf
Continental SlopeContinental RiseSubmarine
Canyons
2. Deep Ocean Basin: Abyssal PlainsOceanic ridges
3. Trenches4. Seamounts and Guyots5. Atolls
![Page 7: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/7.jpg)
Submerged, outer edge of the continents.
Two types: 1. Active Margin (Pacific)
2. Passive Margin (Atlantic)
![Page 8: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/8.jpg)
Continental Shelf:
Much more similar to the continent that the deep ocean. They have hills, depressions, mineral and oil deposits. In Atlantic Canada, the continental shelf hold the best fishing areas (Grand Banks and Scotia Shelf)
![Page 9: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/9.jpg)
Submarine Canyon: on the edge of the
continental shelf• V-shaped indentations into the
continental shelf, usually ending in a fan shaped wedge of sediments.
![Page 10: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/10.jpg)
The Gully!• Submarine canyon off Nova Scotia• Marine protected area because of the rare corals found
there• The natural gas pipeline goes right by it…problems?
The Gully
![Page 11: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/11.jpg)
• "This species forms colonies up to two meters high and takes between 200 and 500 years to grow such a colony. They only grow 1.5 millimeters a year."
L. Pertusa (Spider Hazards)
Bubble Gum coral
P. Arborea
Largest reported from NS was 7m tall!
![Page 12: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/12.jpg)
Deep Ocean Basin• Abyssal plains: From the
Greek meaning “without bottom”. They are flat, cold, dark, featureless expanses of sediment-covered ocean floor. They are most common in the Atlantic
• Ocean Ridgesmountainous chains of actively spreading ocean floor. They can rise 2km from the ocean floor and sometimes form islands such as Iceland, the Azores and Easter island.
![Page 13: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/13.jpg)
![Page 14: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/14.jpg)
Mid-Atlantic Ridge
![Page 15: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/15.jpg)
Trenches!• deep gap in ocean floor,
formed by movement of plates.
• Example: Mariana Trench is 10,668 meters deep
• They are among the most active areas on Earth.
• They are the deepest areas of the Earth’s crust.
• 90% of trenches are found around the Pacific rim.
![Page 16: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/16.jpg)
![Page 17: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/17.jpg)
Seamounts and GuyotsBoth are undersea volcanoes that originated at a
hotspot or along a ridge Guyots once reached the surface of the ocean
and have flat, eroded topsSeamounts never reached the surface, so they have pointy tops
![Page 18: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/18.jpg)
Hawaii
![Page 19: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/19.jpg)
Atolls• A ring shaped island of coral reefs and coral
debris. These often form over sinking inactive volcanoes.
![Page 20: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/20.jpg)
Undersea structures shown by Sonar
• This surprised oceanographers who expected the ocean bottoms to be smoother, more like a bowl (deepest in the middle and getting shallower towards continents).
![Page 21: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/21.jpg)
Features found on the seafloor
Continent Mid-ocean ridge Sea mount
Oceanic trench
Abyssal plain
Continental shelf
Central rift zoneDepth (m)
![Page 22: 1. Geological Oceanography Ocean Topography. Two Sad Jokes Q: Why don't aliens eat clowns. A: Because they taste funny. Two snowmen are standing in a](https://reader030.vdocument.in/reader030/viewer/2022032709/56649ed95503460f94be7163/html5/thumbnails/22.jpg)
Ocean floor features:
Trenches
Mountain chains
Sea mounts
Fracture zones