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Michael Davias
70 followers -
Obsessed with Alfas & Carolina Bays
Obsessed with Alfas & Carolina Bays

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Over the past few years, the USGS has changed their baseline map structure from a "Quad" that was 1/2º lat by 1º lon to one that is now 1º x 1º, renaming all the entities as well. My Carolina Bay Survey was originally structured on the old Quads, but I am now sharing the hsv-shaded LiDAR elevation maps using the new USGS structure.
One primary motivation was an attempt to move "far afield" from the know Carolina bay territory to see if more could be located on relic terrace surfaces further inland and to the west. While not found in prodigious quantities, there are indeed more being found. In addition, I have become sensitive to the concept of the "valley-head-basins" found along the eastern seaboard, and consider them to be the result of Carolina bays being eviscerated by the headward erosion of streams over the course of their lifetimes.

The photo below show two of the new 1º Quads in Google Earth. I am also including this link to a Google Fusion Table map with links to the new structures.

https://fusiontables.google.com/embedviz?q=select+col1+from+1-yyxuyl5KCvl0FAnuluNwB7C4PvbOoJUOl3rq4mO&viz=MAP&h=false&lat=34.85938030756288&lng=-85.47755468749995&t=1&z=5&l=col1&y=2&tmplt=4&hml=KML
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Four of the 100K USGS Quads in the survey have been updated with 1.5m resolution LiDAR elevation map imagery derived from recent sub-meter datasets. The Quads are Southern Pines, Fayetteville, Laurinburg and Elizabethtown. You can retrieve the Google Earth KMZ access files using this link:
http://cintos.org/FB/jan2017-4QuadsLiDAR.kmz

The Survey has over 9,000 measured Carolina bays in the 4 Quads, accessible using this link to bay metadata:
http://cintos.org/FB/jan2017QuadsBays.kmz
This kmz allows only one quad of bay placemarks to be shown at a time to keep from overloading Google Earth.
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43 year low in jobless claims - 6 years after an all time high. Yea, America is toast.

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Terrorists killed almost 3,500 Americans worldwide since 2011, but Firearms in the hands of Americans have killed over 400,000 in the USA over the same period. THAT's terror and lack of security.

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Here it comes! Honest scientific debate can now be questionable by the Justice Department. Are they gearing up to keep their jobs when Trump arrives?

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The Supreme Court was not concerned at all....  Data breach; won't happen.  Then, of course, it did. Lets set the real facts into the discussion about how safe we are giving the government  (just folks like us, really) the keys to the digital kingdom.

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North Carolina is being treated to new LiDAR flights, courtesy of the USGS and the "Sandy" program. NC was the first state to fund Lidar back in 2000 and 2001, which resulted in a treasure-trove for Carolina bay affectionatos, as it presented them in their true glory. But... that early LiDAR was technically inferior to what is available today, as it was flown on 3-meter spacing and had problems getting through dense ground cover - especially in those areas that never have "leaf-off" conditions.

I am processing the new LiDAR, which is flown on 15 cm spacing, and does indeed get to bare-earth most of the time. I cut it down to 1-meter for saving, and am putting out 2-meter LiDAR tiled overlays for use in Google Earth.

Here are two examples from the Elizabethtown USGS Quad. Guess which one is which!

http://cintos.net/ge/LiDARprojects/JoneslakeIncipientBay/JonesLake_LiDAR_network.kmz
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1/23/16
2 Photos - View album

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New LiDAR overlays for Google Earth from my Carolina Bay Survey.



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Many Carolina Bays have been developed, but this one's topography was used to design the entire neighborhood back in the 1920's.

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Wondrous suburban development built in 1920s inside a Carolina bay.
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