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?501Please respect copyright.PENANAy05D6S2lWf
501Please respect copyright.PENANAM1UuhLnTGm
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。501Please respect copyright.PENANA24mJRZHjV0501Please respect copyright.PENANAh3nNXytMgK
501Please respect copyright.PENANAGdOQCrRFxA
501Please respect copyright.PENANAIIn0ocVimK
(圖2)二氧化碳是由一個碳原子(C)及兩個氧原子(O)而組成。501Please respect copyright.PENANAVmMH9mamRe501Please respect copyright.PENANAAx27kIlyyN
501Please respect copyright.PENANAymcI9myPun
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%。501Please respect copyright.PENANABsKxotL6ni
501Please respect copyright.PENANAXeI6kJUiQq
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。501Please respect copyright.PENANAvjo6LL9Eiu
501Please respect copyright.PENANAeiMxwDQWrE
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。501Please respect copyright.PENANAgxSGFWrTHY
501Please respect copyright.PENANAcVLFhcnCbo
(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。501Please respect copyright.PENANA05Ftg08YDJ501Please respect copyright.PENANAo2uBABIR8u
501Please respect copyright.PENANAo3A578qPua
非常重要的是,這反應會隨著溫度提升而加速進行。501Please respect copyright.PENANAf9WQkyJBhc
501Please respect copyright.PENANArzSQMRKxmX
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。501Please respect copyright.PENANA2aQKYb6W77
501Please respect copyright.PENANAjfdMR0tFmq
(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。501Please respect copyright.PENANAKKxofK600U501Please respect copyright.PENANAXNjUMUvt3H
501Please respect copyright.PENANAWVFbSLI1tZ
從圖中可見,海洋的溫度正呈著不斷下降的趨勢。501Please respect copyright.PENANAr4giCgyADq
501Please respect copyright.PENANArGb3Y2TdRr
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?501Please respect copyright.PENANA26NnkbdFuj
501Please respect copyright.PENANAtnQBMonBSI
501Please respect copyright.PENANAO48EQpuQEc
501Please respect copyright.PENANANsHaxT1tf8
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。501Please respect copyright.PENANAqoVshkEeBH
501Please respect copyright.PENANAoNwgzujbM0
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/toc501Please respect copyright.PENANA1i6fqvJMD8
501Please respect copyright.PENANAE9YkiBfikX
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。501Please respect copyright.PENANApEmbBf8Bze
501Please respect copyright.PENANAh6gU6aflNI
Link:501Please respect copyright.PENANAu0u6E3Xpx8
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio501Please respect copyright.PENANAFT5tHkI0kx
501Please respect copyright.PENANAIjBe0CjSzL
501Please respect copyright.PENANAhoGUf5vkfN
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。501Please respect copyright.PENANAB0PBudD0q8
501Please respect copyright.PENANAUb6g0mvY8h
Ref1:https://www.ldeo.columbia.edu/~peter/Resources/Seminar/readings/Ravelo%20&%20Hillaire-Marcel.2007.pdf501Please respect copyright.PENANAG5eV4TXPVt
Ref2:https://science.sciencemag.org/content/371/6534/1148501Please respect copyright.PENANAXvNF6Csrks
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline Info
-
toc Table of Contents
-
share Share
-
format_color_text Display Settings
-
exposure_plus_1 Recommend
-
Sponsor
-
report_problem Report
-
account_circle Login
Search stories, writers or societies
Continue ReadingClear All
What Others Are ReadingRefresh
X
Never miss what's happening on Penana!
科普專欄–薯不揀單
Author:
薯仔聞茱莉

ISSUE #178
三十秒科學–海洋溫度正循著上升還是下降的趨勢?
LIKES 1
READS 497
BOOKMARKS 150
campaign
Request update 0
Sponsor

Click to load the next chapter
X
After each update request, the author will receive a notification!
smartphone100 → Request update
X
Sponsor again
Click to login
Login first to show your name as a sponsor.
Thank you for supporting the story! :)
Please Login first.
×
Write down what you like about the story
×
Reading Theme:
Font Size:
Line Spacing:
Paragraph Spacing:
Load the next issue automatically
Reset to default
×
People Who Like This