本研究探討年際氣候震盪對全球平均海平面的影響，故將衛星測高儀數據剔除長期趨勢與季節波動後，與數個氣候指數進行互相關及同調性頻譜分析，其結果為：(i) 海平面與 ENSO，尤其是 Central-Pacific Types 在一年半以上的時間尺度，有高度相關，相關的原因可能與混合層溫度變化、陸地降雨海陸分布的變化有關。(ii) 海平面與 PDO、AMO 的相關性分別集中在 4 年以上與 2 年到 10 年，海水的熱含量變化可能是主因。AMO 相關性最高是在其比海平面早發生 8 個月的時間。 (iii) 雖然研究資料不包含北極海，但結果指出海平面與 AO 有弱相關，意味著北極海的年際溫鹽變化，對於全球海平面有遙相關的影響。(iv) 海平面與 AAO 似乎有弱相關，但是無法確定。最後本研究將上述五個指數以最小平方法擬合海平面年際變化，得到各指數的相對強度貢獻比例，有助於了解在未來全球暖化下的海平面變化。

本研究初步分析颱風雷達回波圖發現，利奇馬、蘇力、柯羅莎、杜鵑4個雙眼牆的颱風，內眼牆有沿著外眼牆內側旋轉的現象，時間尺度約為3至14小時。接著比較颱風個案，選定杜鵑颱風作為主要觀察研究對象，以探討影響雙眼牆颱風內眼牆滾動週期的因素為研究目標，並以數值模式簡化問題。我做出兩種猜測，認為此一現象的成因，有可能是眼區的繞轉，或是內眼牆被眼區內的正渦度帶動旋轉。我先後設計了單、雙眼牆旋轉實驗，發現影響此二系統旋轉週期的主因不盡相同。其中，從雙眼牆實驗的結果可以發現，影響內眼牆滾動週期的參數，主要是眼區半徑以及眼區渦度，呼應了內眼牆受眼區內渦度帶動旋轉的猜測。最後，我在模擬杜鵑颱風的實驗中，做出相似的旋轉週期，證明內眼牆滾動的機制，主要以水平動力為主，也證明先前實驗的參數，即是影響旋轉週期的要素。

The use of brine shrimp nauplii to test for the overall toxicity of sediment samples is proposed. Brine shrimp nauplii were cultured with different concentrations of heavy metals, including chromium (III), copper (II), nickel, lead and zinc, and organic pollutants, including triclosan, oxybenzone, octinoxate and bisphenol A. The brine shrimp nauplii were observed under a dissection microscope to determine the death rate. Results showed that brine shrimp nauplii are more sensitive to copper, cadmium, bisphenol A and oxybenzone. The LC50 (24h) are 55.5, 24.9, 5.6 and 2.7 ppm respectively. Zinc is likely to have synergistic toxic effect with nickel or lead. The synergistic toxic effects of other heavy metals and organic pollutants should be confirmed with further investigations. Brine shrimp nauplii were treated with extracts from sediment samples collected from the oyster culture zone of the Deep Bay, namely Pak Nei, Sha Kiu Tsuen and Hang Hau Tsuen. The sediment samples were extracted with neutral sodium acetate to dissolve the exchangeable heavy metal ions and some organic pollutants. The death rate of brine shrimp nauplii treated with the sediment extract of Hang Hau Tsuen was similar to 1 ppm PBA. It was also about 10 to 20% higher than that of the other two sites (Pak Nei and Sha Kiu Tsuen). Since Hang Hau Tsuen is closer to the residential area and Lau Fau Shan Seafood Market than the other two sites, its sediment sample is likely to have a higher level of environmental pollutants. The results suggest that brine shrimp nauplii may be used as a biomarker to monitor the environmental changes in the overall level of pollutants in sediment samples.

The research project has an extremely relevant topic - the creation of an air quality monitoring system for general secondary education. In the context of the Covid 19 pandemic, proper air sanitation is a determining factor in counteracting the spread of coronavirus infection. Special requirements for the procedure of systematic ventilation of educational premises are set before teachers and technical staff of schools "Sanitary Regulations for General Secondary Education Institutions", which is mandatory for implementation in general secondary education institutions. Together with measures to counter the Covid 19 pandemic, the new health regulations somewhat neglect resource conservation and energy efficiency issues: ventilation during the heating season can lead to wasteful heat losses. Monitoring the quality of air purification is simply necessary if teachers and parents care about creating a safe educational environment for students at school. Requirements for air safety determine and regulate its characteristics such as temperature, humidity, the presence of dust particles of different sizes, the concentration of carbon dioxide (CO2), carbon monoxide (CO) and formaldehyde vapors. The level of hazardous substances such as formaldehyde, which can be released from building materials, carbon monoxide and carbon dioxide, should be closely monitored in accordance with the recommendations of sanitary regulations and hygiene requirements of health care facilities. With increased concentrations of carbon dioxide above normal, the human body will experience the negative effects of hypoxia: poor health, drowsiness, decreased cognitive processes, learning becomes less effective. Carbon monoxide is a poisonous substance that can damage the body, poison hemoglobin and cause constant hypoxia of all organs and systems, long stay indoors with it leads to death. Formaldehyde causes carcinogenic effects, and the excess concentration of dust particles worsens the condition of people with allergies and bronchial asthma, as well as dust promotes bacterial growth and the spread of viral particles, which is especially dangerous in a coronavirus pandemic. Our solution allows for a transparent permanent monitor of air quality in the school, makes this monitoring completely inclusive - because any user from among the participants in the educational process has access to up-to-date information about the air in the school and can make informed decisions about proper behavior Our system allows students to become more responsible, independent in terms of sanitary requirements and compliance. Therefore, the main idea of our project is extremely relevant today - to organize a digitalized system for monitoring the quality of air purification in the school, thus preventing inadequate ventilation with wasteful heat loss and reduced energy efficiency of the school building. The project has signs of sustainability - it is in line with the Sustainable Development Goals – 3 «Good health and well-being», 4 «Quality education», 5 «Gender equality», 11 «Sustainable cities and communities», 12 «Responsible consumption and production» and 13 «Climate action»

當高鐵行經地層下陷明顯區域、或土壤液化中高潛勢的沖積層時，行車的車身震動會更劇烈嗎？本研究基於這樣的動機，經由測量高鐵沿線不同區段的震動訊號，了解各段的震動特徵。 本次研究使用微機電加速計（MEMS sensor）來量測高鐵行經左營至台北路線上車廂內之震動，並利用QCN Live軟體分析波形，分析行經各站間之頻率與振幅特徵，結果發現，行經台南到嘉義、嘉義至雲林、雲林至彰化三段路線的震動，在濾波0.5-4.0 Hz之平均振幅大於其他非地層下陷與土壤液化地段，同時我們也發現低頻振動的最大振幅在列車行經土壤液化區時有顯著的增加。

本研究利用海冰覆蓋面積的變化、北極震盪指數(Arctic Oscillation index, AOI)和南方震盪指數(Southern Oscillation index, SOI)的相關性，希望可以探討與聖嬰現象的關聯。 取用1950年到2020年的海冰覆蓋面積資料及195!年到2020年的SOI及AOI資料。我們將AOI和SOI做折線圖、X-Y圖，數據分成平常年、聖嬰前、聖嬰時、聖嬰後、反聖嬰前、反聖嬰時、反聖嬰後，試圖找出一些規則。利用區間分析來觀察區間範圍大小及上下界的數值隨不同事件發生的次序，探討各個事件的特徵。 聖嬰年時，區間縮小，反聖嬰年則區間略為放大且數值上升。最後將1997年聖嬰年的數據和區間做疊圖，並以2018年底到2020年的聖嬰轉反聖嬰來做驗證。若AOI的區間縮小、或海冰覆蓋面積下降後上升，表示可能是聖嬰現象要來的前兆。此外，本研究也發現，無法單獨區隔聖嬰年和反聖嬰年，兩者間會相互影響，應該要把聖嬰跟反聖嬰合併為一個氣候變化週期，才能做準確的預測。

本研究區域為蘭陽溪口溼地與五十二甲溼地，各選擇5和6個採樣點，檢測水體中的溶氧度、pH值、導電度、總固體溶解量(TDS)、水溫以及濁度並記錄當時氣溫。 在蘭陽溪口溼地中我們發現越靠近出海口，導電度、TDS越高。採樣點4濁度為最高，猜想可能與位置有關。五十二甲溼地中則以採樣點6的導電度、TDS為最高，濁度、pH值及溶氧量則是採樣點3最高。我們還藉由五十二甲濕地分區使用圖，比較人為因素對水質的影響。採樣點3為遊客休憩區，測得的濁度、pH值皆較高，採樣點6為生態區，測值相對較小，推測人為因素與水質有關聯。最後，在10月10日的數據中，發現蘭陽溪口溼地的導電度特別高，推測潮汐現象為可能造成此現象的因素，也是未來研究的方向。

為了解地震對地球自轉速率變化之影響，本研究使用自製地球模型、模擬板塊裝置，並運用 Tracker 等程式，模擬地震後地球自轉變化情形。 自製地球轉動時角速度有週期變化，可當作模擬地震發生的背景資料。研究結果顯示，加重板塊負重，角速度無明顯變化趨勢，但自轉一圈所需時間皆增加。改變板塊位置，北緯 22.5 度組角速度圖形高峰值及振幅顯著增加，赤道、北緯 45 度組變化則不明顯。 板塊移動與球體旋轉同向時，角速度變化振幅明顯加大，反向則不明顯。在角速度相對小時移動板塊，角速度趨勢往下，平均角速度減少；反之，在角速度相對大時移動板塊，角速度趨勢往上，平均角速度增加。 本模型模擬之地震所引發之日長改變量，經由換算相當於自轉週期 24 小時的地球改變了 36 分鐘。

本研究以維繫現今環境，使人類保有生存優勢為前提，旨在探討於海水面下裝設風扇，藉風扇擾流改變沿岸流所挾帶漂沙之沉積分布，延緩突堤效應造成之負面影響。研究先以煙霧觀測五葉、七葉及九葉風扇擾流情形，再透過水流及螢光沙模擬安平商港外海，取得裝設各風扇後漂沙沉積變化過程。除可用於預測近表層沿岸流沉積外，也可套用於海底恆流。未來期望針對流量、流速與地形坡度等作出量化數據，以求得函數模型。另外，亦期望發展洋流發電、綠色能源等各種應用。

As part of the European project GEOTHERMICA - ERA NET and in order to assess the capacity of heat storage in Switzerland, the Centre d'Hydrogéologie et de Géothermie de l'Université de Neuchâtel (CHYN) is taking part in the HEATSTORE project, launched in 2018. The latter is expected to lead to commercial heat storage projects in the near future in Geneva and Bern, in fractured aquifers. The evaluation of the geological characteristics of these aquifers is essential to understand the thermal energy transport processes of fractured aquifers. For this, it is necessary to be able to measure the temperature distribution along boreholes. Thus, the study focuses on the evaluation of a distributed temperature system (DTS) and its optical fiber in order to determine its operation, limits and potential for use in geothermal energy. Laboratory and field tests have been carried out that the water temperature deviation measurements, with a scan time of 30 s, are reliable at less than 0.5°C at +/-5 m over 500 m of fiber. For absolute temperature values, however, a bath and a reference probe must be used to recalculate the absolute temperature to within 0.5°C. The acquired data are essential for a broader understanding of the locations of fractured and karstified aquifers at Concise, allowing the system to be used to better understand the potential for water storage at a depth of 45°C at 35 m.