[need2fish]

What's the best section of a warm core eddy to look for fish: inshore side, offshore side, east side or west side ? What's the rationale ? I guess it depends upon where you're likely to see the most upwelling of cold nutrient-rich water --> plankton, baitfish, etc..., but where is that ?? They say these eddies rotate clockwise and move to the southwest, but I don't understand how to put this info into practical use. Comments would be appreciated.

This post edited by need2fish 03:33 AM 05/10/2008

 

[643735]

Fishing Warm Core Eddies

need2fish wrote:
What's the best section of a warm core eddy to look for fish: inshore side, offshore side, east side or west side ? What's the rationale ? I guess it depends upon where you're likely to see the most upwelling of cold nutrient-rich water --> plankton, baitfish, etc..., but where is that ?? They say these eddies rotate clockwise and move to the southwest, but I don't understand how to put this info into practical use. Comments would be appreciated.

Wow, I gave 20 ocean analysis breakout sessions at the Canyon Runner seminars from Newport to Annapolis this year to more than 2000 people and no one can answer this question! You guys are in trouble. I will note your report cards and send a letter home to all your mothers!! I hope you all get grounded!

Len Belcaro
Offshore Satellite Services

This post edited by CaptLen 09:45 PM 05/10/2008

 

[Halfseas]

It's Mother's Day and the last thing she needs is another bad report card...she hasn't seen one of those for +25 years.

North West side where it hits the 100 Fathom line.

 

[643735]

Halfseas wrote:
It's Mother's Day and the last thing she needs is another bad report card...she hasn't seen one of those for +25 years.

North West side where it hits the 100 Fathom line.

Right on the nose! But Why?

 

[ifish42na]

I was there at all the seminars too. Wish I could have sat in on one of yours!

 

[Jigalow]

Where's SFUSA when you need him?

 

[Squeri Boy]

Basil, Me too! LOL!

 

[06405]

CaptLen Why??

because that is where the blue water pushes up against the edge, and traps the bait right against the wall were Mr tuna will be.

 

[643735]

06405 wrote:
because that is where the blue water pushes up against the edge, and traps the bait right against the wall were Mr tuna will be.

Blake
Good Going. The clockwise rotation drives warm nutrient rich Gulf Stream waters north up the western side of the eddy and slams it into the continental shelf driving subsurface nutrients toward the surface attracting baitfish. In spring it also creates a plankton bloom as warm Gulf Stream water moves into the cold water regions on the shelf. Check out what the rotation of the eddy is doing on the eastern side.
Basil & Chris, you guys have a pass. I still don't know anything about wind ons and I'm 20 feet from Basil's session all winter!!

 

[643735]

Question #2

Why should you keep your eyes open for life on the flats as you approach the shelf if an eddy is positioned in the same location as in the picture I provided in my last post?

Len Belcaro

 

[Halfseas]

The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water. This could cause pools of blue water to be formed at the surface far from the edge.

 

[643735]

Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water. This could cause pools of blue water to be formed at the surface far from the edge.


Frank, Are you looking for a job?

Len

 

[643735]

Question #3 Cold Core Eddies

What are the charactoristics of a cold core eddy and where are they located in relation to the Stream.

Len

 

[Jigalow]

Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.
sorry but this part doesn't make sense to me. I've always understood the warm water floats on top of the colder water, you're saying it's the other way around?

 

[643735]

Frank, Time to go to Work!

Jigalow wrote:
Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.
sorry but this part doesn't make sense to me. I've always understood the warm water floats on top of the colder water, you're saying it's the other way around?

Ok Frank this one's all yours.

Len

 

[carlynewlondon]

CaptLen wrote:
What are the charactoristics of a cold core eddy and where are they located in relation to the Stream.

Len

Cold core eddies rotate counter clockwise and are to the south side of the stream.

 

[643735]

carlynewlondon wrote:
CaptLen wrote:
What are the charactoristics of a cold core eddy and where are they located in relation to the Stream.

Len

Cold core eddies rotate counter clockwise and are to the south side of the stream.
They most certainly do, but they don't move west like the warm ones do. They sit on the surface for a short period of time then they sink out of sight of the satellites. Sail boaters running from Newport to Bermuda pick up that extra push of 2 to 4 knots from the current on the west side of the Cold Eddy due to the CCW rotation.

halfseas wrote:
sorry but this part doesn't make sense to me. I've always understood the warm water floats on top of the colder water, you're saying it's the other way around?
Where are you Frank! Late to class again!!

This post edited by CaptLen 03:23 PM 05/11/2008

 

[Hunt n' Fish]

What a great discussion.

Thank you very much Capt Len and the rest of you for offering such a great "How To" here. I appreciate it.

Jigalow wrote:
Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.
sorry but this part doesn't make sense to me. I've always understood the warm water floats on top of the colder water, you're saying it's the other way around?

Yes, colder water is denser than warm water and would, under normal circumstances, be lower in the column, but the pertinent part of the discussion you missed was:

Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.

Saltwater is denser than freshwater. Even warm saltwater is denser than cold freshwater. So apparently Gulf Stream water has a higher salinity (maybe due to more evaporation in the Southern climates?) than the Northern surface currents, and is more dense, and pushes under the cold water?

The most dense water in the world occurs where the ice caps form, and take the fresh water out of the sea to form ice, and the excess salt and extremly cold waters sink to the ocean bottom and form currents much like the surface warm water currents and bring nutrient rich upwellings when they collide with sea mounts, etc.

Chris

This post edited by Hunt n' Fish 04:39 PM 05/11/2008

 

[643735]

Hunt n' Fish wrote:
Thank you very much Capt Len and the rest of you for offering such a great "How To" here. I appreciate it.

Jigalow wrote:
Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.
sorry but this part doesn't make sense to me. I've always understood the warm water floats on top of the colder water, you're saying it's the other way around?

Yes, colder water is denser than warm water and would, under normal circumstances, be lower in the column, but the pertinent part of the discussion you missed was:

Halfseas wrote:
The warmer, salinate/ heavier gulf water will push under the cooler, desalinated/ lighter Labrador current water.

Saltwater is denser than freshwater. Even warm saltwater is denser than cold freshwater. So apparently Gulf Stream water has a higher salinity (maybe due to more evaporation in the Southern climates?) than the Northern surface currents, and is more dense, and pushes under the cold water?

The most dense water in the world occurs where the ice caps form, and take the fresh water out of the sea to form ice, and the excess salt and extremly cold waters sink to the ocean bottom and form currents much like the surface warm water currents and bring nutrient rich upwellings when they collide with sea mounts, etc.

Chris

Thanks Chris
Because of the driving force a warm eddy creates that pushes north, along with the depth and size of the warm eddy, warm water can be driven under the cold water only to eventually rise to the surface up on the flats inside the 100 fathom line. This water can pop up 2 to 10 miles inshore of the 100. KEEP YOUR EYES OPEN FOR LIFE inside the shelf and watch the water for color, & temp.

This post edited by CaptLen 05:44 PM 05/11/2008

 

[Halfseas]

Thanks for covering for me Chris, I couldn't of said it better. With little one's Mother's Day is a traveling holiday.

Great thread Len, please keep it going.

The fact I still retain the info you taught us shows you how great your breakouts are.