https://blog.wongcw.com/2021/05/08/nasa%e7%94%a8%e8%a1%9b%e6%98%9f%e6%84%9f%e7%9f%a5%e5%88%b0%e4%ba%86%e6%b5%b7%e6%b4%8b%e8%a1%a8%e9%9d%a2%e4%b8%8b%e7%9a%84%e6%bd%ae%e6%b1%90/
NASA用衛星感知到了海洋表面下的潮汐