Aia ma Severn Estuary, Wales, ʻo Aberavon kahi hoʻonohonoho groyne leʻaleʻa e hāʻawi ana i kahi lima hema wili maikaʻi no nā huli a me nā hacks. He maʻalahi ka heʻenalu ʻana o nā nalu ma ʻaneʻi a hiki i 50 mau mika ma luna o kahi pōhaku. Aia kekahi mau piko kahakai OK ma ka ʻākau ma ke kahakai. Hiki ke pilikia ka maikaʻi o ka wai.
He aha nā kūlana heʻenalu maikaʻi loa no Aberavon?
Loaʻa maikaʻi ma waena o ka pūhaka kiʻekiʻe a ma luna. Paipai mākou i ka holo ʻana i kahi papa lōʻihi ma ʻaneʻi i ka wā liʻiliʻi a me kahi papa pōkole ke piʻi ka nui. He kūpono kēia hoʻomaha no ka poʻe heʻenalu waena a kiʻekiʻe. He nalu ko ka nalu maʻaneʻi i kekahi manawa (4/10) a ʻaʻohe kanaka nui (3/10). No ka Hikina mai ka makani maikai. ʻO nā ʻōhū maikaʻi loa mai ke komohana hema a me ke komohana. Ke hana nei ma ke kai kiʻekiʻe.
Paipai mākou e hoʻohana i kahi 3/2 i ke kauwela ke piʻi ka mahana o ka wai i 17 degere. I ka hoʻoilo, ʻoi aku ka maikaʻi o ka 5/4 ke hāʻule ka mahana o ka wai i 8 degere. E ʻike i ka pakuhi wela ma lalo no ka ʻikepili hou aku no kēia.