Hahahahhahahaha... That's great. So did the cherry fall off?Aithne wrote:
You have to hear this.
Okay I am a smoker. I smoke outside (laundry room is a cross between outside and inside - and this is where I smoke). I usually take my laptop with me so I can continue to chat with you ladies. So I go in the laundry room. Open the door to outside to ventilate the room. Grab a cigarette, light it (all while holding onto my laptop). Then I go to sit down. And miss the chair by a foot.
[Archive] Son of Daniel, ma belle
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You just had a Kyle moment.
You just had a Kyle moment.
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PolkadotConfederation
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Aithne wrote:
You have to hear this.
Okay I am a smoker. I smoke outside (laundry room is a cross between outside and inside - and this is where I smoke). I usually take my laptop with me so I can continue to chat with you ladies. So I go in the laundry room. Open the door to outside to ventilate the room. Grab a cigarette, light it (all while holding onto my laptop). Then I go to sit down. And miss the chair by a foot.
Hey. I'm Kassia!
I waffle my Chelsey.
Thomas Andrews is my hero.
I waffle my Chelsey.
Thomas Andrews is my hero.
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consideration
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I'm suddenly sooo tired. It just went WOOMPH and hit me all at once.
I'm off to bed. Goodnight!
Oh, and btw, I just wanted to let you guys know that when I say that I love you, I seriously mean it! I haven't even been posting that long and I feel so close to you guys. It's awesome.
G'nite!
I'm off to bed. Goodnight!
Oh, and btw, I just wanted to let you guys know that when I say that I love you, I seriously mean it! I haven't even been posting that long and I feel so close to you guys. It's awesome.
G'nite!
Raspberry Lemonade Slurpees!
Daniel, Ma Belle and all its inhabitants (past and present) own my heart.
Daniel, Ma Belle and all its inhabitants (past and present) own my heart.
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PolkadotConfederation
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considdy. is. leaving. meeeeeeee?
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PolkadotConfederation
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PolkadotConfederation
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Aithne
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Aithne
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PolkadotConfederation
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In the last lesson we covered the wind-driven currents of the surface ocean. While the surface circulation is the more obvious to us, it turns out it affects only 10% of ocean water volume. The remaining 90% of ocean water is too deep to be affected by wind. This lesson covers where that deep water comes from, and how it circulates through the deep ocean in slow currents driven by density differences between water masses with different temperatures and salinities. This slow movement of deep water helps regulate our climate, and delivers nutrients to organisms living in the deep.
Density-Driven Water Flow
Deep-water circulation is driven by density differences (as in heavier water sinks, and lighter water rises), and is called “Thermohaline Circulation” because temperature and salinity (T&S) together are what determine the density of seawater. Processes that cause variations in temperature and salinity occur mainly at the surface (warming and cooling by the atmosphere, evaporation, freezing). So once a parcel of water becomes dense and sinks away from the surface it tends to keep its T&S characteristics for a long time (1000 years or longer), until it eventually circulates back up to the surface.
Density Variation in Sea Water
Most ocean water is within a narrow range of T&S. The figure below (Figure 6.13 in your textbook) shows the natural range of T&S of ocean waters. 75% of ocean water has the very narrow range of T&S characteristics covered by the small, dark blue square near the bottom of the figure at 0–5°C and 34–35‰, while 99% of ocean water has T&S characteristics that fit within the light blue area. But even these small variations in T&S are enough to create the density differences that drive deep-water circulation.
Density-Driven Water Flow
Deep-water circulation is driven by density differences (as in heavier water sinks, and lighter water rises), and is called “Thermohaline Circulation” because temperature and salinity (T&S) together are what determine the density of seawater. Processes that cause variations in temperature and salinity occur mainly at the surface (warming and cooling by the atmosphere, evaporation, freezing). So once a parcel of water becomes dense and sinks away from the surface it tends to keep its T&S characteristics for a long time (1000 years or longer), until it eventually circulates back up to the surface.
Density Variation in Sea Water
Most ocean water is within a narrow range of T&S. The figure below (Figure 6.13 in your textbook) shows the natural range of T&S of ocean waters. 75% of ocean water has the very narrow range of T&S characteristics covered by the small, dark blue square near the bottom of the figure at 0–5°C and 34–35‰, while 99% of ocean water has T&S characteristics that fit within the light blue area. But even these small variations in T&S are enough to create the density differences that drive deep-water circulation.
Hey. I'm Kassia!
I waffle my Chelsey.
Thomas Andrews is my hero.
I waffle my Chelsey.
Thomas Andrews is my hero.