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?714Please respect copyright.ＰＥＮＡＮＡiyWZ23KLQs
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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。714Please respect copyright.ＰＥＮＡＮＡASdkHggdVH
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（圖2）二氧化碳是由一個碳原子(C)及兩個氧原子(O)而組成。714Please respect copyright.ＰＥＮＡＮＡQL0e7n993F
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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%。714Please respect copyright.ＰＥＮＡＮＡzvGb7MgWUA
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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。714Please respect copyright.ＰＥＮＡＮＡQrP9JglumE
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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。714Please respect copyright.ＰＥＮＡＮＡyxqGQzdkgt
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（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。714Please respect copyright.ＰＥＮＡＮＡTwZKtSlbjh
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非常重要的是，這反應會隨著溫度提升而加速進行。714Please respect copyright.ＰＥＮＡＮＡgQQGjqztdC
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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。714Please respect copyright.ＰＥＮＡＮＡdOKbJWhJdR
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（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。714Please respect copyright.ＰＥＮＡＮＡUzmGHd8vMj
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從圖中可見，海洋的溫度正呈著不斷下降的趨勢。714Please respect copyright.ＰＥＮＡＮＡ9YVyCSbsbV
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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？714Please respect copyright.ＰＥＮＡＮＡt40qI14HLs
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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。714Please respect copyright.ＰＥＮＡＮＡ1nNWafQt4h
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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。714Please respect copyright.ＰＥＮＡＮＡPVp2o3ggyo
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio714Please respect copyright.ＰＥＮＡＮＡVzCNdhb2Iv
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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。714Please respect copyright.ＰＥＮＡＮＡArDXdkDQrQ
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Ref1:https://www.ldeo.columbia.edu/~peter/Resources/Seminar/readings/Ravelo%20&%20Hillaire-Marcel.2007.pdf714Please respect copyright.ＰＥＮＡＮＡ3On3IRNZj8
Ref2:https://science.sciencemag.org/content/371/6534/1148714Please respect copyright.ＰＥＮＡＮＡXh47i0pK25
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