理學院
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學院概況
理學院設有數學系、物理學系、化學系、生命科學系、地球科學系、資訊工程學系6個系(均含學士、碩士及博士課程),及科學教育研究所、環境教育研究所、光電科技研究所及海洋環境科技就所4個獨立研究所,另設有生物多樣性國際研究生博士學位學程。全學院專任教師約180人,陣容十分堅強,無論師資、學術長現、社會貢獻與影響力均居全國之首。
特色理學院位在國立臺灣師範大學分部校區內,座落於臺北市公館,佔地約10公頃,是個小而美的校園,內含國際會議廳、圖書館、實驗室、天文臺等完善設施。
理學院創院已逾六十年,在此堅固基礎上,理學院不僅在基礎科學上有豐碩的表現,更在臺灣許多研究中獨占鰲頭,曾孕育出五位中研院院士。近年來,更致力於跨領域研究,並在應用科技上加強與業界合作,院內教師每年均取得多項專利,所開發之商品廣泛應用於醫、藥、化妝品、食品加工業、農業、環保、資訊、教育產業及日常生活中。
在科學教育研究上,臺灣師大理學院之排名更高居世界第一,此外更有獨步全臺的科學教育中心,該中心就中學科學課程、科學教與學等方面從事研究與推廣服務;是全國人力最充足,設備最完善,具有良好服務品質的中心。
在理學院紮實、多元的研究基礎下,學生可依其性向、興趣做出寬廣之選擇,無論對其未來進入學術研究領域、教育界或工業界工作,均是絕佳選擇。
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Item 台灣周邊海域海流之數值研究(2008) 辛宜佳; Yi-Chia HsinA multiple grid-size nesting ocean model system is developed in this work to perform studies on the variations of the flow in the Taiwan Strait and the Kuroshio east of Taiwan. The transport in the Taiwan Strait is studied using the East Asian Marginal Seas (EAMS) model. Three model experiments using different wind data sets (ERA40, NCEP Reanalysis version 2, and QuikSCAT/NCEP blend wind) were performed. Model experiments suggested that the best simulation is achieved when the model is driven by the QuikSCAT/NCEP blend wind forcing. Involving the strong wintertime southward flow events in the Taiwan Strait, the annual averaged modeled transports through the Taiwan Strait is 1.09 Sv (1 Sv=106 m3/s). The result suggests that shipboard Acoustic Doppler Current Profiler (sb-ADCP) observations are biased toward estimates in summer and fair weather since bad weather during the winter northeast monsoon often prevents seagoing observations. Linear regression lines are also proposed to give simple relations between transport and wind stress for roughly evaluating the transport through a known wind stress value. The spatial and temporal variations of the Kuroshio east of Taiwan are investigated using model outputs, surface drifter trajectories, satellite-based altimetric data, and wind data. From the simulation of the EAMS model over a span of 24 years from 1982 to 2005, the variability of the Kuroshio east of Taiwan is studied in detail. Between 22 and 25°N, the mean state and variability of the Kuroshio, such as the two paths observed in the trajectories of surface drifters southeast of Taiwan and the branching of the Kuroshio northeast of Taiwan, are well reproduced by the model. Southeast of Taiwan, the Kuroshio is mostly in the top 300 m in the inshore path but extends to 600 m in the offshore path. Northeast of Taiwan, the Kuroshio follows the shelf edge in the East China Sea, but sometimes branches along a path south of the Ryukyu Islands. The latter path often meanders southward, and a significant portion of the Kuroshio transport may be diverted to this path. The Kuroshio extends from the coast to 123°E ~ 123.5°E between 22°N ~ 25°N with currents reaching a depth of 1000 m at some latitudes. The Kuroshio transports averaged over five sections east of Taiwan are 28.4 ± 5.0 Sv and 32.7 ± 4.4 Sv with and without the contribution from the countercurrent, respectively. Using satellite data and the Seas Around Taiwan (SAT) model simulation, the intra-seasonal variation of the Kuroshio southeast of Taiwan is further studied. Superimposed with the main stream of the Kuroshio, two intra-seasonal signals longer than 2 weeks are revealed in the study region, 20 ~ 30 days and 40 ~ 90 days. The variation of 20 ~ 30 days is only significant between Taiwan and the Lan-Yu Island. Amechanism is proposed to describe how the wind stress curl in the northeastern South China Sea modulates the circulation southeast of Taiwan on this timescale. The fluctuation with a longer period of 40 ~ 90 days is resulted from the westward propagating eddies.Item 臺灣附近海域傳輸量之研究(2004-05-20) 許瑋真; 辛宜佳; 吳朝榮臺灣位於西北太平洋(Northwestern Pacific Ocean )的海域上,是東亞島弧的 一部份;東連太平洋,北鄰東海(East China Sea,ECS),西接臺灣海峽(Taiwan Strait),南靠呂宋海峽(Luzon Strait),西南方為南中國海(South China Sea,SCS)。在此區域之風系概為:於冬季時低氣壓在北太平洋上形成,盛行東 北季風,然於夏季時相反,盛行西南季風,故此季風系統的改變乃是影響臺灣附 近海流變化的重要因子之一。臺灣周圍海底地貌有許多重要的通道,這些通道為 水團交換的重要場所,黑潮由臺灣東邊的東臺灣通道(East Taiwan Channel, ETC)進入東海,西太平洋水團經由臺灣與呂宋島間的呂宋海峽與南中國海水團會 合,東海水團流經位在臺灣與中國大陸(Mainland China)間的臺灣海峽與南中國 海水團相會,而在臺灣海峽東南側的澎湖水道(Penghu channel),是海峽中唯一 水深超過200 公尺之處。所以這些通道影響著水團進出的特性,而且從過去到現 在已有計畫展開研究。本研究的主要目的是運用臺灣附近海域傳輸量之比較來驗 證西北太平洋數值模式的正確性,並探討此海域附近傳輸量的變異。由西北太平 洋數值模式之模擬結果,我們可以計算出臺灣附近海域各主要通道之傳輸量的時 間序列,其結果與觀測值相仿,如黑潮主軸在PN測線(124.50度E,30.00度 N)~(128.25度E,27.50度N)上往東北方向的流,年平均傳輸量為 26.7.plmin.3.5Sv(1Sv=10m/sup 3/s/sup -1/),與Ichikawa and Chean(2000)指出年平均傳輸量為27.6Sv,頗為近似,故可說明此模式在臺灣附 近海域的模擬具有很高的可信度。Item 南海海域之數值模式研究(2004-05-20) 許群; 辛宜佳; 吳朝榮從台灣的南端向西南延伸就到達了東南亞最大的邊緣海----南中國海(South China Sea) ;其為一個半封閉的海盆,北邊由台灣海峽來與東海相連,東北邊 則是由呂宋海峽與西太平洋連接,南邊的麻六甲海峽則與印度洋相連。四週也有 陸地環繞,東邊為呂宋島、東南為巴拉望、南為婆羅州,而西邊是越南、西南為 馬來半島,北邊則為中國的東南沿海。其水深最大可達5000公尺左右,海盆中還 有東沙、中沙與南沙等群島。本研究利用美國普林斯頓大學所發展之三維原始方 程式數值模式--- POM(Princeton Ocean Model) 所建構而成,模式範圍,東西 向從99.degree.E 到124.degree.E,南北向從2.degree.N 到27.degree.N。利用 不同時間、空間尺度的風場資料來驅動,例如: 歐洲中尺度風場中心(ECMWF)的 資料,藉此發現對模式結果所造成的影響。由模式結果發現,南海海盆的表面流 況有季節性的變化。在冬天時因受東北季風的影響,海盆內部的表層環流出現反 時鍾的環流型態(Cyclonic),並且在呂宋島的西北海域有湧升流(upwalling)的 出現。而在夏天,風向變為西南季風,因此,海盆內出現南北兩個相反的環流系 統;在北半部為反時鍾的環流型態(Cyclonic),南半部則出現順時鍾的環流型態 (Anticyclonic),並且在越南東方海域有湧升流的出現。