Dynamic Planet B/C

[SciolyMaster]

I really should be doing my homework instead of making this...

1. What climate events are characterized by increased upwelling and decreased sea surface temperatures off the western coast of South America?
2. What two forces are balanced when ocean water undergoes geostrophic flow?
3. What are the two most common anions in seawater?

[jimmy-bond]

I really should be doing my homework instead of making this...

1. What climate events are characterized by increased upwelling and decreased sea surface temperatures off the western coast of South America?
2. What two forces are balanced when ocean water undergoes geostrophic flow?
3. What are the two most common anions in seawater?

You reminded me that I have AP Calc homework to tend to, so I'll repay by answering them questions 1. La Nina comes to mind, but idk what events plural would have those effects. I'll just go with the girl.
2. The pressure gradient and the Coriolis force
3. Cl- and SO4(2-)

[SciolyMaster]

I really should be doing my homework instead of making this...

1. What climate events are characterized by increased upwelling and decreased sea surface temperatures off the western coast of South America?
2. What two forces are balanced when ocean water undergoes geostrophic flow?
3. What are the two most common anions in seawater?

You reminded me that I have AP Calc homework to tend to, so I'll repay by answering them questions 1. La Nina comes to mind, but idk what events plural would have those effects. I'll just go with the girl.
2. The pressure gradient and the Coriolis force
3. Cl- and SO4(2-)

All correct! (#1 asks for "events" because La Niña events occur in a semi-regular cycle, i.e. more than once; sorry if that confused you.) Your turn.

[jimmy-bond]

Grephton (pronounced Mike) has hella samples to collect and analyze. Suggest a tool for him to collect...
1. A sediment profile of an area that's supposed to have four layers of different material, but he can't disturb it too much
2. A sample of water just above the ocean floor, and only with water at a specified elevation - no higher, no lower (well duh, you'd be going into the ground)
3. A community of tube worms on the sea floor near some hydrothermal vents
4. Information on DEPTH...depth...depth...depth...

[SciolyMaster]

Grephton (pronounced Mike) has hella samples to collect and analyze. Suggest a tool for him to collect...
1. A sediment profile of an area that's supposed to have four layers of different material, but he can't disturb it too much
2. A sample of water just above the ocean floor, and only with water at a specified elevation - no higher, no lower (well duh, you'd be going into the ground)
3. A community of tube worms on the sea floor near some hydrothermal vents
4. Information on DEPTH...depth...depth...depth...

Click to Show Answer

1. box corer? (or is it the long tube/cylinder thingy?)
2. Nansen/Niskin bottle
3. Bushwhacker
4. (multi-beam) echo sounder

[jimmy-bond]

Click to Show Answer

1. box corer? (or is it the long tube/cylinder thingy?)
2. Nansen/Niskin bottle
3. Bushwhacker
4. (multi-beam) echo sounder

1. Yeah, long tube/cylinder thing. A piston corer is what you're looking for.
2. Nansen and Niskin bottles are mainly for vertical stuff, along with just about every other water sampler except the one I had in mind, which was the Van Dorn sampler
3 and 4 are correct Your turn!

[SciolyMaster]

1. At approximately what latitude is average seawater salinity the greatest, and why?
2. What is the region in which seawater density rapidly increases with depth known as?
3. What is the world's largest deep-sea water mass, and how does it form?

[k1208438]

1. At approximately what latitude is average seawater salinity the greatest, and why?
2. What is the region in which seawater density rapidly increases with depth known as?
3. What is the world's largest deep-sea water mass, and how does it form?

1, Between 20-40 degrees North, because of high evaporation and low rainfall.
2,Pycnocline
3,North Atlantic Deep Water, through upwelling and downwelling

[SciolyMaster]

1. At approximately what latitude is average seawater salinity the greatest, and why?
2. What is the region in which seawater density rapidly increases with depth known as?
3. What is the world's largest deep-sea water mass, and how does it form?

1, Between 20-40 degrees North, because of high evaporation and low rainfall.
2,Pycnocline
3,North Atlantic Deep Water, through upwelling and downwelling

Click to Show Answer

1. Actually, it's around 30 degrees both north AND south of the Equator, but otherwise you're correct!
2. Correct!
3. It's actually Antarctic Bottom Water (or AABW), which forms near Antarctica due to a combination of brine rejection during sea ice formation, and the action of katabatic winds that push newly-formed sea ice away from regions called polynyas (preventing the ice from insulating the underlying water)

Your turn!

[k1208438]

1, What are semi-permeable membrane devices used for?
2,What landform was in place of the Bering Strait millions of years ago?