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?447Please respect copyright.ＰＥＮＡＮＡjHX8T6VnJp
447Please respect copyright.ＰＥＮＡＮＡIUup07ZGtx
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。447Please respect copyright.ＰＥＮＡＮＡbBhoppyz6y
447Please respect copyright.ＰＥＮＡＮＡ9W2WwaCqZO
447Please respect copyright.ＰＥＮＡＮＡc3CvkaBRcQ
447Please respect copyright.ＰＥＮＡＮＡ0jGTfvoUNO
（圖2）二氧化碳是由一個碳原子(C)及兩個氧原子(O)而組成。447Please respect copyright.ＰＥＮＡＮＡxwHXiW3ydg
447Please respect copyright.ＰＥＮＡＮＡD5Fyn8KvH2
447Please respect copyright.ＰＥＮＡＮＡ6gSt5c6ZW4
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%。447Please respect copyright.ＰＥＮＡＮＡA0S8DVNvLc
447Please respect copyright.ＰＥＮＡＮＡY5yPx1E3tS
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。447Please respect copyright.ＰＥＮＡＮＡrwwhMs86ea
447Please respect copyright.ＰＥＮＡＮＡ0dk1WqcTFL
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。447Please respect copyright.ＰＥＮＡＮＡRVwEMjC0Jq
447Please respect copyright.ＰＥＮＡＮＡZbXiSouyKX
（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。447Please respect copyright.ＰＥＮＡＮＡv69xczEqcx
447Please respect copyright.ＰＥＮＡＮＡCkIuA8ePye
447Please respect copyright.ＰＥＮＡＮＡFhOSKLiUgQ
非常重要的是，這反應會隨著溫度提升而加速進行。447Please respect copyright.ＰＥＮＡＮＡZZq9BYhPHf
447Please respect copyright.ＰＥＮＡＮＡjaUWLrQ0ZY
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。447Please respect copyright.ＰＥＮＡＮＡSgL6FEMubg
447Please respect copyright.ＰＥＮＡＮＡUxTtbVX1R2
（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。447Please respect copyright.ＰＥＮＡＮＡ5ywRYODeyq
447Please respect copyright.ＰＥＮＡＮＡzE9tJ6Vt6D
447Please respect copyright.ＰＥＮＡＮＡfvRdZp8WMI
從圖中可見，海洋的溫度正呈著不斷下降的趨勢。447Please respect copyright.ＰＥＮＡＮＡ7DDdlnrPqh
447Please respect copyright.ＰＥＮＡＮＡqfPDybc8w2
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？447Please respect copyright.ＰＥＮＡＮＡCf5BqDnEP6
447Please respect copyright.ＰＥＮＡＮＡj7LfbLf6dX
447Please respect copyright.ＰＥＮＡＮＡ3GdYsyjZHo
447Please respect copyright.ＰＥＮＡＮＡTn9jN6Yc79
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。447Please respect copyright.ＰＥＮＡＮＡ57HS0ktlW3
447Please respect copyright.ＰＥＮＡＮＡkgE7lEVMdY
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/toc447Please respect copyright.ＰＥＮＡＮＡhQxA21YjOZ
447Please respect copyright.ＰＥＮＡＮＡ6jmys6qecz
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。447Please respect copyright.ＰＥＮＡＮＡ0hraOATHWd
447Please respect copyright.ＰＥＮＡＮＡBJck9kIDwh
Link:447Please respect copyright.ＰＥＮＡＮＡrONAqLamxp
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio447Please respect copyright.ＰＥＮＡＮＡXGGabXvUcm
447Please respect copyright.ＰＥＮＡＮＡ6bNAejHxhX
447Please respect copyright.ＰＥＮＡＮＡ2AO2nSPW59
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。447Please respect copyright.ＰＥＮＡＮＡL7gjjVj8ra
447Please respect copyright.ＰＥＮＡＮＡ8hUQ51cCk6
Ref1:https://www.ldeo.columbia.edu/~peter/Resources/Seminar/readings/Ravelo%20&%20Hillaire-Marcel.2007.pdf447Please respect copyright.ＰＥＮＡＮＡptIJBZhyoJ
Ref2:https://science.sciencemag.org/content/371/6534/1148447Please respect copyright.ＰＥＮＡＮＡkUzw7bjPRd

ns3.144.165.245da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章