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Click on photo to view the original size. |
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Read what others had to say:
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Dan Nickens - Apr 04,2012
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The canal runway absolutely sparkles under a SeaRey.
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Cool Running
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Don Maxwell - Apr 04,2012
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Ack! There's a bend in the canal. Did the Corpse make a mistake?
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Dan Nickens - Apr 05,2012
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No, Don. Some Senator just got a little extra cash to water someone's back 40.
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Dan Nickens - Apr 04,2012
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Seaplane safety is strictly emphasized by certain seriously unsafe critters.
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Canal Security
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Wayne Nagy - Apr 05,2012
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Great picture of 'a BIG one', Dan!
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Dan Nickens - Apr 04,2012
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If the canal gets crowded with critters, you might have to go off-roading to check on critical aircraft components.
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Off Roading
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Dan Nickens - Apr 04,2012
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Don Maxwell - Apr 04,2012
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That road looks good enough to land on--though of course no one would dream of doing that.
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Dan Nickens - Apr 05,2012
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One might dream of it, Don. There's no law against dreaming....yet. In fact, a precautionary landing could be legally justified under existing law.
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Dan Nickens - Apr 04,2012
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Canopies can cook you in the Florida sun…unless you open them up.
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Open Cruising
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Dan Nickens - Apr 04,2012
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You have to get down low to get an accurate bug count.
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Low Rider
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Dan Nickens - Apr 04,2012
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A quick stop for catnips and swamp wraps.
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Lunch Break
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Dan Nickens - Apr 04,2012
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The big lake could easily be confused with an inland sea.
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Open Water
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Dan Nickens - Apr 04,2012
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A wrong turn on the edge of the lake can put you in the weeds.
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Weed Whacking
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Dan Nickens - Apr 04,2012
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If it’s big enough for an airboat, maybe you squeeze a SeaRey in too.
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Reed Rush
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Dan Nickens - Apr 04,2012
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Better to be over the weeds than knee deep in them.
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Weed Hopping
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Dan Nickens - Apr 04,2012
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It was way too hot for the cold stuff.
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Not Snow
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Dan Nickens - Apr 04,2012
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It’s hard to get clearance into a hot military operations area. It takes a lot of phone calls and a lot of patience.
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Patiently Floating
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Russ Garner - Apr 05,2012
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Richards got his SeaRey smile and hat on.
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Dan Nickens - Apr 04,2012
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Dan Nickens - Apr 04,2012
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Frank A. Carr - Apr 05,2012
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Is the 'stuff' that makes the blue water blue the same stuff that makes it inadvisable to land <br />in a sand mine??
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Dan Nickens - Apr 05,2012
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Glad you asked, Frank. Instead of a simple answer, consider this.<br /><br />Despite all the sand in Florida, Lake County is one of the few places where commercial grade coarse sand is available. It is derived from the Cypresshead Formation and Quaternary sediments reworked from that formation. The formations occur in a narrow band that pretty much lies in a north-south line, mostly within the Green Swamp.<br /><br />Its presence is a function of a bit of ancient history: peninsular Florida began life as a line of islands much like the Bahamas. Limestone made up of skeletons of billions of sea creatures (the original corpse of engineers) formed in the warm, shallow water. Their calcareous skeletons were deposited on top of the basement rocks (volcanic and metamorphic types) from coral reefs and shallow marine environments. In those days, there wasn’t much sand at all.<br /><br />Then the world changed. About 24 million years ago Florida bumped into Georgia. Georgia was the southern terminus of a range of great mountains. As the Appalachians eroded they sent a steady stream of sand, silt and clay southward. Coincidentally, the strong currents triggered an upwelling of phosphate rich deep ocean water. The sand and phosphate in Lake County got all mixed together. The clays deposits were subsequently eroded preferentially during sea level fluctuations.<br /><br />Then, about 5 million years ago, sea level rose significantly. When sea level crested, Lake County was just a shallow sand bar. The influx of sand to Lake County lay along the long axis of the peninsula. As sea level dropped, wave action sorted the sand leaving some areas with coarse grains. The phosphate no longer welled up during the Pliocene when the coarse grain beach sand of the Cypresshead Formation came into being.<br /><br />During the Quaternary period, beginning about 2 million years ago, sea level fluctuation worked on the old sand deposits, moving them to new locations on different beaches and depositing them in streams, rivers and tidal channels. This “reworking” enhanced the good commercial sand deposits of the Cypresshead Formation. When sea level dropped, subaerial weathering washed out many of the impurities.<br /><br />Now before the latest recession, there was a building boom going on in Florida generally and Lake County in particular. Those well washed sand deposits made for commercial sand pits.<br /><br />To avoid the cost and environmental impact of dewatering in the swampy areas, miners employed dredging techniques. A mixture of sand and water is pumped from the dredge pool to the processing plant. In a “closed loop” system, the sandless water is returned to the pool from which it came.<br /><br />At the processing plant, a washer is used to remove impurities (mostly fine grained sand and clay). The water containing the impurities is typically cycled to settling ponds. In most cases the “fines” settle out quickly. In some cases, where there is a lot of clay, they may remain in suspension for a long period of time unless chemical “flocculants” (polymers) are used.<br /><br />In some cases there may be black organics. When present, chemical leaching is used to remove the unsightly stain.<br /><br />The water left in the dredge pool is a function of the original sediment, processing, and post processing. Where there were fine clay particles, the separated clay may take decades to fall out of suspension (unless polymers are added to flocculate the particles in the post processing). If the sand was not white, chemical leaching may have been used in the processing. All these factors determine the “water quality” of the resultant pool.<br /><br />Water clarity is a function of dissolved substances or suspended particles (or the absence thereof). Deep, dark chocolate water in the Green Swamp is generally the result of tannin from substantial organic material. The army green is usually a function of algae (phytoplankton).<br /><br />True color is based on filtering out of suspended particles and micro organisms. It is measured in PCU, or platinum-cobalt units. What we see from our seaplanes is only the apparent color and not of much interest to water quality scientists.<br /><br />Though it is of interest to me, I have no personal knowledge of the water quality of the ponds in my photos. I’m optimistic that they aren’t particularly toxic, though, and given the opportunity I might just drop in to check them out.<br /><br />But the water quality and color is not what makes it inadvisable to land. The “ponds” are privately owned and I suspect the corporate owners would take a dim view of airborne aquatic trespassers.<br />
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Troy iRMT Heavy Maint. Enriquez - Apr 06,2012
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Dan,<br />May I borrow/have this for my doctoral thesis? <br />well written.
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Don Maxwell - Apr 06,2012
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Interesting, Dan. What makes the blue water blue?
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Dan Nickens - Apr 06,2012
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Perhaps I wasn't sufficiently clear, Don: 'I don't know.' <br /><br />But Wikipedia does: <a href="http://en.wikipedia.org/wiki/Color_of_water">http://en.wikipedia.org/wiki/Color_of_water</a>
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Don Maxwell - Apr 06,2012
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I've been especially interested in this one because there are some sand pits near where I live (and fly). Most of them have water that from the air appears bright aqua--almost fluorescent and unnatural--but a few look like the lime phosphates that old-time drugstores used to sell. I've been meaning to drive to some of them and try to get a close look at the water.<br /><br />I suspect that the hue is at least partly determined by the bottom of the pond. White sand, I'd think, would make clear water appear bright, light blue, But that's only a hypothesis and needs testing.<br /><br />Here in eastern Virginia, many rivers are brownish from silt runoff. Others (like the Chicahominy that you've flown past) appear black from tree-stuff after flowing through a swamp. There's even one, the Pamunkey, that almost looks clear-ish. Up in the Shenandoah Valley, where there's not much farming or development, rivers like the Potomac run clear and bright.<br /><br />I've poked a stick into snow on mountain tops, and the hole looks like it's filled with pale blue air.<br /><br />Color names and divisions between colors work out differently in different languages. For example, the line between 'blue' and 'green' is at a different wavelength in Yoruba (western Nigeria) than in English. And I think that in Mandarin, the line between 'yellow' and 'red' is different. (Not too sure about that, though. It may just be a manner of speaking about cloths in uniforms and other things, rather than an entirely different perception of color. It's rather hard to discuss this because everyone grows up with different assumptions, and we don't have good ways of discussing it.)<br /><br />Here's an interesting page that I came across recently: <a href="http://www.colblindor.com/color-name-hue/">http://www.colblindor.com/color-name-hue/</a>
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