探深海比探月球更难更神秘 人类只绘20%海底地图
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▲泰坦号自18日失联至今,氧气存量即将耗尽。(图/路透)
探访铁达尼号沉船的观光潜水器“泰坦号”失联的搜救行动持续进行,然而深海搜救困难重重。CNN报导指出,尽管人类探索海洋表面的时间已有数万年之久,但依据美国国家海洋暨大气总署(NOAA)2022年的数据,直至今日仍只绘制出20%海底地图。研究人员形容,去太空旅行比潜入海底还要容易。
伍兹霍尔海洋研究所(Woods Hole Oceanographic
Institution)数据显示,人类史上有12名太空人完成登月任务,待在月球表面总时长有300小时,但多年来只有3个人探索过马里亚纳海沟最深处“挑战者深渊”(Challenger
Deep,距地表约1万973公尺),且累计时间只有3小时。
在美国国家航空暨太空总署(NASA)工作30多年的海洋学家费尔德曼(Gene
Feldman)直说,“我们绘制的月球、火星的地图,比自己所在星球的地图还要更好。”
这次失联观光潜水器泰坦号是一项较为新颖的项目,让游客能够探索海洋深处。
文中提及,人类对深海的探索如此有限是有原因的,因为到海洋深处旅行,意味着越往深处去,会进入压力极大的环境中,连带风险相当高,环境黑暗,几乎没有能见度,且温度极低。英国基尔大学鉴识地球科学教授普林格尔(Jamie
Pringle)表示,“水下搜索相当困难复杂,海底要比陆地更崎岖。”
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