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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 沈川洲(Chuan-Chou Shen) | |
| dc.contributor.author | SHENG-PU CHANG | en |
| dc.contributor.author | 張聖菩 | zh_TW |
| dc.date.accessioned | 2021-06-16T17:16:45Z | - |
| dc.date.available | 2012-08-20 | |
| dc.date.copyright | 2012-08-20 | |
| dc.date.issued | 2012 | |
| dc.date.submitted | 2012-08-17 | |
| dc.identifier.citation | References
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63702 | - |
| dc.description.abstract | 西太平洋暖池擁有全球最大的暖水區域，其巨大的熱含量提供著中高緯度熱能，並將充沛的水氣經由大氣海洋循環帶至其他區域。現今影響低緯度太平洋地區變化最為劇烈的聖嬰─南方震盪現象，本研究希望藉由類比過去36萬年來赤道太平洋的氣候模式，得到對全球氣候演變更進一步的了解。
為了重建過去赤道太平洋的氣候模式，本研究對MD05-2925 (9.344 oS, 151.460 oE, 水深 1661 m)岩心進行分析，使用其中的浮游有孔蟲Globigerinoides ruber, white, s.s., (250-300 μm)的鎂鈣比以及氧同位素建立過去36萬來的海水表溫變化紀錄和水體氧同位素紀錄。 藉由比較氧同位素紀錄的變化和水表溫的變化，可以辨認其與歲差的訊號相關性非常高，說明歲差是西太平洋暖池南緣地區主要的氣候控制因素。除此之外，在赤道地區溫度紀錄裡，領先氧同位素變化大約2到4千年，推論赤道地區溫度的變化為觸發全球氣候變化的原因。經由重建過去暖池變化紀錄和前人研究的比較，得到太平洋暖池南緣和東赤道太平洋有著非常良好的相關性，顯示在低緯度東部與西南太平洋由同樣的機制控制了這個地區的變化，此同步反映在海水溫變化和鹽度變化的現象，難以用單純的聖嬰─南方震盪現象來解釋，當暖池在高溫環境下擴張時，赤道地區的高鹽度指示了間熱帶輻合區北移的可能。 | zh_TW |
| dc.description.abstract | The Western Pacific Warm Pool (WPWP) plays a key role in the global climate system because it is the greatest warm region of the oceans worldwide and the large heat capacity supplying the latent heat and moisture in global climate changes. By analyzing Mg/Ca ratios of planktonic foraminifer, Globigerinoides ruber white, s.s., (250-300 μm) of a sediment core MD05-2925 (9.344 oS, 151.460 oE, water depth 1661 m) over the past 360 thousand years at the sensitive southern margin of the WPWP (SMWP), the results show five features. (1) WPWP thermal condition is strongly associated with global sea level change. The global climate changes may be triggered by thermal/hydrological conditions of the WPWP. (2) The derived sea surface water | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T17:16:45Z (GMT). No. of bitstreams: 1 ntu-101-R98224114-1.pdf: 1794384 bytes, checksum: 1ef25998583cf598985f037518c36f46 (MD5) Previous issue date: 2012 | en |
| dc.description.tableofcontents | Contents
摘要....................................................................................………………………………I Abstract………………………………………………………………………………….II Contents III List of Figures IV List of tables V Chapter 1 Introduction 1 Chapter 2 Material and methods 5 2.1 Study Region 5 2.2 Core MD05-2925 7 2.3 Planktonic foraminifer and cleaning process 7 2.4 Mg/Ca Analysis 9 Chapter 3 Results 12 3.1 δ18O record 12 3.2 Age Model 13 3.3 G. ruber Mg/Ca and inferred SST 15 3.4 Validity of samples 16 3.5 Seawater 18O 18 Chapter 4 Discussion 19 4.1 SST, δ18O and seawater δ18O 19 4.2 Lead of SST over δ18O 22 4.3 Comparison with central warm pool and eastern equatorial Pacific 24 Chapter 5 Conclusions 27 References 28 List of Figures Figure 1.1 El Nino and La Nina…………………………………………………………2 Figure 1.2. Intertropical Convergence Zone……………………………………………2 Figure 1.3 SST records of cores ODP806B and TR163-19...……………………………4 Figure 2.1 Map with the site of core MD05-2925……………………………………….5 Figure 2.2 Modern sea surface temperature in Pacific Ocean…………………………...6 Figure 2.3. Currents in the Equatorial Pacific Ocean……………………………………6 Figure 2.4 Finnigan ELEMENT 2…………………………………………………….10 Figure 2.5 Matrix effect of [Ca]………………………………………………………..11 IV List of Figures Figure 1.1 El Niño and La Niña…………………………………………………………2 Figure 1.2. Intertropical Convergence Zone……………………………………………2 Figure 1.3 SST records of cores ODP806B and TR163-19...……………………………4 Figure 2.1 Map with the site of core MD05-2925……………………………………….5 Figure 2.2 Modern sea surface temperature in Pacific Ocean…………………………...6 Figure 2.3. Currents in the Equatorial Pacific Ocean……………………………………6 Figure 2.4 Finnigan ELEMENT 2…………………………………………………….10 Figure 2.5 Matrix effect of [Ca]………………………………………………………..11 Figure 3.1 δ18O record………………………………………………………………...12 Figure 3.2(a) An age model (b) The sedimentation rate………………………………..14 Figure 3.3 Mg/Ca-inferred SST………………………………………………………...15 Figure 3.4 Al/Ca to Mg/Ca……………………………………………………………..16 Figure 3.5 Mn/Ca to Mg/Ca…..………………………………………………………..17 Figure 3.6 Fe/Ca to Mg/Ca……………………………………………………………..17 Figure 3.7 Seawater oxygen isotopic record…………………………………………18 Figure 4.1 Comparison of SST and δ18O………………………………………………21 Figure 4.2 Filter of MD05-2925 SST…………………………………………………23 Figure 4.3 Wavelet analysis…………………………………………………………….24 Figure 4.3 SSTA record………………………………………………………………...19 Figure 4.4 Position of ITCZ……………..……………………………………………..26 Figure 4.6 Records of 3 marine sediment and map…………………………………...27 V List of tables Table 3.1 Results of 14 C dates………………………………………………………….14 | |
| dc.language.iso | en | |
| dc.subject | 西太平洋暖池 | zh_TW |
| dc.subject | 海表水文變化 | zh_TW |
| dc.subject | c Warm Pool | en |
| dc.subject | Hydrological Variation | en |
| dc.subject | Western Pacifi | en |
| dc.title | 西太平洋暖池南緣過去36萬年來的海表水文變化 | zh_TW |
| dc.title | Hydrological Variation at the Southern Margin of the Western Pacific Warm Pool over the past 360 kyrs | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 100-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 魏國彥(Kuo-Yen Wei),陳明德(Min-Te Chen),張詠斌(Yuau-Pin Chang) | |
| dc.subject.keyword | 西太平洋暖池,海表水文變化, | zh_TW |
| dc.subject.keyword | Hydrological Variation,Western Pacifi,c Warm Pool, | en |
| dc.relation.page | 47 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2012-08-18 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 地質科學研究所 | zh_TW |
| 顯示於系所單位： | 地質科學系 | |
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