科普專欄–薯不揀單 - 三十秒科學–海洋溫度正循著上升還是下降的趨勢？

極端氣候開始陸續浮現，人為及自然因素相信均有份參與。在這層面上，我們有沒有辦法可以得知以往的氣候變化又是如何呢?446Please respect copyright.ＰＥＮＡＮＡ2H1z7l92t1
446Please respect copyright.ＰＥＮＡＮＡwk9xHO4YCQ
本篇將會探討一下測量地球海洋溫度轉變的其中一一道辦法。446Please respect copyright.ＰＥＮＡＮＡCKJcWXL6pU
446Please respect copyright.ＰＥＮＡＮＡenPCR0v3s1
446Please respect copyright.ＰＥＮＡＮＡwlHgZ2poUD
446Please respect copyright.ＰＥＮＡＮＡHi1AAcJyHi
（圖2）二氧化碳是由一個碳原子(C)及兩個氧原子(O)而組成。446Please respect copyright.ＰＥＮＡＮＡJKs28sncX9
446Please respect copyright.ＰＥＮＡＮＡyk00Zm4hcL
446Please respect copyright.ＰＥＮＡＮＡi79bUpERrU
用沒有讀過理科的角度來觀看，碳原子在自然界會以12C、13C及其他形式的狀態呈現，其中以12C呈現的方式佔大多數，達98.89%。而13C的比例則為1.11%。446Please respect copyright.ＰＥＮＡＮＡz04n2Dtw83
446Please respect copyright.ＰＥＮＡＮＡW8WC4Pq3uE
氧原子亦是同一道理，在自然界會以16O、18O及其他形式的狀態呈現。446Please respect copyright.ＰＥＮＡＮＡhduvFRlzIl
446Please respect copyright.ＰＥＮＡＮＡ5gHLoX3uEv
整個情形就像是明治香蕉朱古力一樣，雖然同是香蕉狀，但有極少數的朱古力會以黃金香蕉的方式呈現。446Please respect copyright.ＰＥＮＡＮＡ7ciwD80fmB
446Please respect copyright.ＰＥＮＡＮＡueHLJnBbCO
（圖3）位於深海的有孔蟲(Foraminifera)的外殼含有CaCO3物質。它們會與水產生反應，因而交換氧原子的呈現方式。446Please respect copyright.ＰＥＮＡＮＡVOoLgCNGhz
446Please respect copyright.ＰＥＮＡＮＡmkppakBmXv
446Please respect copyright.ＰＥＮＡＮＡuGv65eIsgd
非常重要的是，這反應會隨著溫度提升而加速進行。446Please respect copyright.ＰＥＮＡＮＡn5E3tbqGVU
446Please respect copyright.ＰＥＮＡＮＡhEyEj30CFL
亦即是說，溫度越高的話，越多有孔蟲外殼的CaCO3物質會以18O的方式呈現。446Please respect copyright.ＰＥＮＡＮＡ2j5LQtB2ss
446Please respect copyright.ＰＥＮＡＮＡUVN5maqKKq
（圖4）科學家透過測量不同年代的孔蟲化石外殼的氧原子狀態，從而推論出不同時代的海洋溫度。446Please respect copyright.ＰＥＮＡＮＡCVgqBmlJP7
446Please respect copyright.ＰＥＮＡＮＡMxo6rXjyER
446Please respect copyright.ＰＥＮＡＮＡk60oESIQn6
從圖中可見，海洋的溫度正呈著不斷下降的趨勢。446Please respect copyright.ＰＥＮＡＮＡgewFWH89DX
446Please respect copyright.ＰＥＮＡＮＡpRXaFDM2yS
海洋溫度會影響大海吸收二氧化碳的能力及內裡的生物鏈，而海洋溫度正不斷下降，究竟是好還是壞呢？446Please respect copyright.ＰＥＮＡＮＡpwoP9wZ47x
446Please respect copyright.ＰＥＮＡＮＡ1C4vBJvkIf
446Please respect copyright.ＰＥＮＡＮＡ3VKORsWmVv
446Please respect copyright.ＰＥＮＡＮＡt3zslBMa1x
如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。446Please respect copyright.ＰＥＮＡＮＡdlAPERDmEJ
446Please respect copyright.ＰＥＮＡＮＡiXhzdv8nzH
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc446Please respect copyright.ＰＥＮＡＮＡAno04NUOsd
446Please respect copyright.ＰＥＮＡＮＡTimZV1ffEf
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。446Please respect copyright.ＰＥＮＡＮＡn8ITGJEKOR
446Please respect copyright.ＰＥＮＡＮＡPmkNYL0Yr7
Link:446Please respect copyright.ＰＥＮＡＮＡyCcy93SoZp
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio446Please respect copyright.ＰＥＮＡＮＡ8QSvcRvHd6
446Please respect copyright.ＰＥＮＡＮＡpt32bg5u5u
446Please respect copyright.ＰＥＮＡＮＡpDI8QnbMTK
除非Facebook及IG重開侵侵的account，否則我的IG將不會再作更新，只會寄居本土LIHKG及Penana。446Please respect copyright.ＰＥＮＡＮＡVjWljx2LgK
446Please respect copyright.ＰＥＮＡＮＡ6LoTMTLSgB
Ref1:https://www.ldeo.columbia.edu/~peter/Resources/Seminar/readings/Ravelo%20&%20Hillaire-Marcel.2007.pdf446Please respect copyright.ＰＥＮＡＮＡG7D3RKaa8Y
Ref2:https://science.sciencemag.org/content/371/6534/1148446Please respect copyright.ＰＥＮＡＮＡ8D1YRM0nc8

ns18.224.199.201da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章