?????? ???? ?????? ( Mean sea level , MSL) ?????? ?????????? ???????????? ??????? ??? ?????? ?????????? ??????? ?????? ?????????. ????? ???????????? ?????? ???????? ????????????? ????? ???????? ?????????. ?????? ?????? ?????? ????????? ????????? ??????? ?????????. [1] ????????????? 2006-04-15 at the ??????? ????????? ?????? ???? ?????? ?????? ???? ???, ?????? ???????????? ????????????? ??????? ???????? ?????? ?????????. ????????? ???? ????? ??????????? ????????????? ??? ??????????? ?????? ???????, ?????? ???? ??????? ????????????. ?????? ????? ??????????? ??????? ??????????????? ?????? ???? ????????? ???? ???? ??? ???????????? ?????? ????????? ???????? ??????????? ????????? ??????? ????????. ^[1]

???? ???????????? ???? ( above sea level ) ??????? ???? ???????????? ???? ???? ??? ???????? ????????? ????????? ????????????????????. ???? ?????? ?????? ????????? ???? ?????? ????????? ???? ?????. ???? ???????????? ???? ????????? ???????? ???????? ???????? ?????????. ???? ????????? ?????????????? ??? ??? ??????? ???????? ?????. ????????? ????????? ?????? ???? ???????????? ???? ( above mean sea level , AMSL) ???????? ???????????.

???? ?????? ?????? [ ???? ]

????????????? ?????????? ???? ??????? ???? ???????? ???? ???????? ??????? ????????? ????? ????????????? ????? ????????????? ???? ???????????? 14 ??.?????????? ???? ?????? ???????????????? ????????????????. ????? 1000 ????? 1400 ??? ???????? ???? ?????????? ?????????? 8 ??.?????????? ???? ?????? ????????? ?????????????????. ^{[2] [3]}

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