tip water temps [Archive] - Fly Fishing Forum

: tip water temps

i'm so outta here
08-08-2000, 01:32 PM
This was taken at about 5 PM last night.
Notice the cool spots just south and
East of the Monomoy tip? This could
bode well if it stays like this for Sat.
Other than Monomoy, I think tunoids
are hovering outside our door steps


08-08-2000, 01:47 PM

I think you are seeing an undersampled (aliased) tidal effect. On incoming tide some of the cold georges' band water gets into the sound. The tide rips just outside mix the thermal layering and we get cold water at the surface. The next tidal outflow pretty much washes it out. The warm water boundary is realy tidally-dependent, more than 0n larger-scsale oceanographic effects. This daily flushing out with cold water is one of the reasons the area is so productive.

i'm so outta here
08-09-2000, 09:50 AM

Thanks for the deeper explanation (pun intended). I'm curious about the surface water being cool. Wouldn't it make sense for the cooler water to sink? What keeps it afloat, as it were? Do you know of a decent Web resource where we might learn more about ocean currents and water temps?

Group, the tide at the time slice above will be roughly the tide we will experience on Sat. but as everyone knows, things change. So who knows what we'll actually see (or rather feel through the waders).

i'm so outta here
08-09-2000, 09:52 AM
I keep forgetting to include this:
<!--http--><a href="http://marine.rutgers.edu/mrs/newevery.capecod.html" target="_blank">Rutgers thermal imaging site</a><!--url-->

08-09-2000, 10:44 AM
I'll try to dig up some journal articles on the topic. Basically, the cold Labrador current travels SW past New England. Most of the flow is below the thermocline. When it hits the shallow georges bank and Nantucket shoals, it gets mixed in with the warmer surface water, and reduces the temperature at the surface. It's a bit like a big pump pumping bottom water up to the surface. It then flows over towards the banana buoy and restratifies.