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?519Please respect copyright.PENANA469cJsW2XV
519Please respect copyright.PENANAyiq1UAtsR6
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。519Please respect copyright.PENANAAJV01pbvus519Please respect copyright.PENANABE4rbxq4xY
519Please respect copyright.PENANAMb5HIiEUPj
519Please respect copyright.PENANAsZllu6l9yY
(圖2)二氧化碳是由一個碳原子(C)及兩個氧原子(O)而組成。519Please respect copyright.PENANANEKFfEi0gW519Please respect copyright.PENANAXrN2g2hh15
519Please respect copyright.PENANAMg3pzEraUl
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%。519Please respect copyright.PENANAygiuPgIUTb
519Please respect copyright.PENANApEDfBkT43a
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。519Please respect copyright.PENANAQIsOHcPrvn
519Please respect copyright.PENANABvaY5llEHo
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。519Please respect copyright.PENANAa5zdryG8uG
519Please respect copyright.PENANAmNyUMaLTJ5
(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。519Please respect copyright.PENANAlDUI3XxwOi519Please respect copyright.PENANAw8iaAudyr1
519Please respect copyright.PENANAvae3FIzCDn
非常重要的是,這反應會隨著溫度提升而加速進行。519Please respect copyright.PENANAq5OtQ9DsAS
519Please respect copyright.PENANApsumQJkQJ7
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。519Please respect copyright.PENANAge1wjyb9l9
519Please respect copyright.PENANAgMp43AF0ga
(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。519Please respect copyright.PENANA2DwIcQfvct519Please respect copyright.PENANA7eXSf9gfiF
519Please respect copyright.PENANAkZ4E9HzkN8
從圖中可見,海洋的溫度正呈著不斷下降的趨勢。519Please respect copyright.PENANA81VyrzuyRL
519Please respect copyright.PENANA6shEe48qhf
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?519Please respect copyright.PENANAJZf5YQYSak
519Please respect copyright.PENANASjE0528fKw
519Please respect copyright.PENANACj9SbfSj4I
519Please respect copyright.PENANAE5dHvz4Njd
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。519Please respect copyright.PENANAOldCIXj9QT
519Please respect copyright.PENANAkjTh2h9Xf4
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/toc519Please respect copyright.PENANA7BFAerbz7t
519Please respect copyright.PENANA5k72WopQxA
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。519Please respect copyright.PENANA76qj9F6BzF
519Please respect copyright.PENANAEE9K74IZiL
Link:519Please respect copyright.PENANANUPhqX23Bl
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio519Please respect copyright.PENANAjsCQsdKySb
519Please respect copyright.PENANA4aqsfxgXAH
519Please respect copyright.PENANACHInfu2qHZ
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。519Please respect copyright.PENANANdPCj4jqIv
519Please respect copyright.PENANAOGfBxR3t69
Ref1:https://www.ldeo.columbia.edu/~peter/Resources/Seminar/readings/Ravelo%20&%20Hillaire-Marcel.2007.pdf519Please respect copyright.PENANAp4Pz7MWz74
Ref2:https://science.sciencemag.org/content/371/6534/1148519Please respect copyright.PENANAjX16leRv3G
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline 資料
-
toc 目錄
-
share 分享
-
format_color_text 介面設置
-
exposure_plus_1 推薦
-
打賞
-
report_problem 檢舉
-
account_circle 登入
X
科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #178
三十秒科學–海洋溫度正循著上升還是下降的趨勢?
喜歡 1
閱讀 515
書籤 150
campaign
催更 0
打賞

按此加載下一章
X
每次催更後,作者都會收到通知!
smartphone100 → 催更
×
寫下你喜歡這個故事的地方
×
對此喜歡的人