-iw- in Germanic

From: fournet.arnaud
Message: 50487
Date: 2007-11-10

I've been looking at Aikio's list of pre-Saami words.
An odd phonetic phenomenon is that
-l- seems to alternate with -iw-
as though this -l- were a velarized -l- (-L-).
 
Ex 1 :
Germanic *ma-iw-a "sea-gull"
North saami bup-mae-l-as "puffin" = a small *pu: seagull.
Norse ful-mar
-iw- = -l-
root *moL-
 
Ex 2 :
Germanic *sa-iw-a "sea"
North saami sae-ll-as "an island in the sea"
PIE sa(:)l- "salt"
-iw- = -l-
root *sa(:)L
 
Ex 3 :
Germanic laiwaz-ka "lark"
Reduplicated laLa- ?
root *la-L-
 
So ?
Any idea, guys ?
 
Arnaud