Lidar addiction

[bobpbx]

I have to walk away from the computer. Boyd's Lidar is too addicting--it is the pines in a whole new light.

The upper right corner of the below photo is the Great Swamp complex containing the Nescochauge, Sleeper, Mullica, etc. Could ancient cold winds from the north (white lines) have created the dunes on the southeast side of this big riverine system? Could said winds have blown loess onto the land where the farms are now shown, thus making the lands as productive as they are today?

 

[Boyd]

Wow Bob, that's the best testimonial I could ever ask for. It's funny that you mention "light" though, because my map is a two dimensional representation of a three dimensional surface. And "light" is the only way to represent that. I had to choose a direction for the light source, and that's a tough call because it makes a big difference in appearance. There isn't a "right way" to do this, the optimum lighting may be completely different for each little detail on the map.

Here's a quick example using the location you have chosen. The number on each image represents the compass heading of the light source (the current version of the map has the light source at 0°). I can also vary the height of the source, but have kept that constant at 45°.

 

[bobpbx]

Interesting Boyd. I like 45 and 0, but I suppose if a person were looking for something specific that another direction highlights better, they would be useful.

 

[Boyd]

It really depends on the feature and how it is oriented. In hilly areas it's more of an issue because the shadows can obscure other details. Here's an example from Spring Hill. With the 0° light source in the current version of the map, the sand pit is almost completely obscured. But if I change the angle to 180°... voila!

 

[manumuskin]

The light coming from 0 degrees? You have just stood the earth in it's head

 

[pinelandpaddler]

Bob,

These are questions for Spung-Man, but, if you will, allow me to speculate:

The dunes in question were probably re-worked by the paleo river whose wide drainage is now occupied by the Nescochague, Mechescatauxin and Atsion branches. The water reoriented the dunes to where the align with the course of flow. Ok, how did I do?

 

[bobpbx]

Bob, These are questions for Spung-Man, but, if you will, allow me to speculate: The dunes in question were probably re-worked by the paleo river whose wide drainage is now occupied by the Nescochague, Mechescatauxin and Atsion branches. The water reoriented the dunes to where the align with the course of flow. Ok, how did I do?

I don't know, being unlearned in this subject, what I said about the winds is just a guess on my part. As to the river reorienting the dunes; are you thinking that the winds came from a different direction than shown, but that the river impact on the land pushed them into a NW/SW alignment?

 

[pinelandpaddler]

I don't know, being unlearned in this subject, what I said about the winds is just a guess on my part. As to the river reorienting the dunes; are you thinking that the winds came from a different direction than shown, but that the river impact on the land pushed them into a NW/SW alignment?

Yes, sir. I think the same thing happened along the south-west side of the nearby Hammonton Creek.