Jim- I don't know why, although I have suspicions. Also, I did not say ONLY
Poplars were susceptible; I know that Red Oaks are also, but the results
are different in the change in the tree.
The difference seems to be in the fluid (sap) content and character in the
Cambium layer. With Red Oak, a hit will "explode" the bark and create a
foamed yellow substance that looks like yellow Styrofoam; The results with
Maple and Poplar are that the Steam expansion peels the bark away, but does
not "foam" it. I have seen one Poplar that had the soil removed from the
region above the roots.
The effect on the tree shape (of the growth after a hit) is also different.
The effect on a Maple is hard to see because of the multi-branched nature.
Both the Poplar and the Red Oak (When grown within a forest) have a large,
tall, main trunk, and the deviation after a hit is easy to detect.
I have lived in the same forest for over 18 years, and I can see these
results; You could, too, and I can show you, if you wish.
Bill
At 07:53 AM 3/17/2005 -0500, Jim Jarvis wrote:
>It was written:
>
>Tulip Poplars are Very prone to Lightning hits. I have quite few on my
>place that show evidence of hits above 40-50 ft. A Tulip Poplar that has
>been hit will show a "Y" or a "Zag" where the top was when it was hit.
>
>and I wonder:
>
>Why would one species of tree be more likely to be hit by lightning
>than another? Unless perhaps there is a stand of one species in a
>higher location than other trees?
>
>n2ea
>jimjarvis@ieee.org
>
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>
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>
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Bill Aycock - W4BSG
Woodville, Alabama
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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