通过问鬼佬,原来是冰层膨胀拱起,破裂后两层叠加在一起,低的那层有较深的水覆盖,难怪风吹有涟漪,怪吓人的。下面是经过几次我说的那个地方的鬼佬的回帖:# S% k. ^7 @8 v' @1 R( X0 d: q0 A
"Usually get some flood water around ice heaves. It will tighten up again in a couple of days. I was across there a few times on the sled. I don't think its open water, but folk should be cautious crossing heaves." 0 ^, w6 V9 w; k1 ?) p) ]" o