地理研究
Permanent URI for this collectionhttp://rportal.lib.ntnu.edu.tw/handle/20.500.12235/194
Browse
13 results
Search Results
Item 臺灣的河川流域之降水量與逕流量形式(地理學系, 1988-03-??) 陳國彥A climograph method using amount of precipitation and height of runoff is introduced to depict the river basin characteristics of Taiwan. Four regions are classified and the research findings are summarized as follows: 1. North region: Typical examples include Lan-Yang His, Tan-Shui Ho, and its tributaries. Amount of precipitation and height of runoff are evenly distributed throughout the year with maxima found in June and September. There is no obvious drought season and the rivers flow all year around in this region. 2. Central region: This region includes river basins of Tou-Chien His, Hou-lung His, Ta-An His, Ta-Chia His, Ta-Tu His, and Cho-Shui Hsi. A bi-peak curve also presents in the graph which shows a maximum in June and a sub-max in August. Seasons of high water discharge and low water discharge are not so clear-cut as those in the south region, however, dry bed river can occassionally be found during the low water discharge season. 3. South region: It includes the area from south of Pei-Kang Hsi to the southern tip of the island. The graph also shows a bi-peak curve with August maximum substantially higher than the other. The amount of precipitation and the height of runoff are cIose to nill in winter. It is regarded as a typical dry bed river region. 4. East region: A mono-peak curve is found in this region. Precipetition and runoff are more evenly distributed than west-coastal area in the same latitude, however, summer maximum is still distinct. The characteristics of river basin in Taiwan are in close relation to the monsoon climate and to the effect of island's topography. The graph shows a summer high water discharge and a winter low water discharge with great difference between them. There generally shows two maxima in a graph with one occurring in June while the other in August. This type of river flow is considered to be suitable and beneficial to the agricultural and the economic development in Taiwan, partItem 臺灣的季節分類試論(地理學系, 1987-03-??) 陳國彥In this essay, it is attempt to classify the climate in Taiwan into several seasons reasonably. Among all the climatic elements which affect the human body, the wet bulb temperature is the most important one. The sensible temperature varies very much and hard to measure by any instrument. But, there is a high correlation between the sensible temperature and wet bulb temperature. Taking all these factors into consideration. the wet bulb temperature is the most suitable elements to descrive the human sensation and to classify the seasons of climate. From the point of view of the wet bulb temperature, it is sugested that the Taiwan's climate could be devided into six seasons, such as winter, spring. pre-summer, mid-summer, post-summer and autumn.Item 臺北盆地的降雨特性及與水文災害關係的研究(1)(地理學系, 1990-03-??) 陳國彥; 徐勝一; 丘逸民With generous support of the National Science Concil, the phase-I study of the underlined research topic has been successfully executed (project No. NSC78-0202-M003-04). In the past year, the research group established a rainfall monitoring network with 21 continuous-recording stations. The sampling period is set to 10-minute and the rainfall data is automatically recorded onto an electronic device for further analysis. As the first report, this paper mainly introduces the domain of the research as: (1) The time-spatial variation of the rainfall in Taipei Basin, (2) The spatial representation of Taipei Meteological station, (3) The urban effects on the rainfall pattern in Taipei Basin, (4) By the water balance method of one heavy rainfall, to discuss the urban flood and inundation of the urbanized area in terms of rainfall intensity, Maximum runoff, surface detention inundation, etc. For increasing the rainfall resolution in the horizontal dimension and coverring a wide area encompassing the whole Taipei Basin and its outskirts, the research group will set up 20 additional rain guage stations. It is expected that through this integrated study with various inundation cases, some effective suggestions can be achieved for the improvement of the existing pumping/sewerage system and for better control of the urban flood runoff and inundation problems in Taipei Basin.Item 侵台颱風之路徑與強度(地理學系, 1981-01-??) 陳國彥Item 臺灣的柯本氣候機率分類(地理學系, 1986-03-??) 陳國彥Item 臺灣地區年降水量的長期變動(地理學系, 1980-01-??) 陳國彥Item 談中國古籍裡的雨異現象(地理學系, 1995-10-??) 徐勝一; 陳國彥; 翁國盈; 丘逸民Unusual precipitation refers to any precipitating subject but commomly observed raindrops, snowflakes, and hails. They include dust, sand, feather, silk, rice, grass, charcal, fish, meat, bone, worm, gold, coin, bloody-rain, bloody-snow and etc. A research project on "Reconstruction of Climate Data from Ancient Chinese History" was proposed by this study group and is funded by the National Science Council. Excerpts of unusual precipitation records from an edited computer file are the bases for analysis and discussion in this article. Causes of most of these precipitating subjects may be interpreted through meteorological consequences; such as typhoon, tornado, and dust-storm. While some of the peculiar events; such as sky-falling meat, coin, gold and etc. still remain unknown and reserved for further investigation.Item 屏東縣林邊佳冬枋寮地區地層下陷與海水倒灌之初步探討(地理學系, 1982-01-??) 陳國彥Item 金門的氣候(地理學系, 1985-03-??) 陳國彥Item 自然地理野外實習資料記錄器(地理學系, 1988-03-??) 徐勝一; 陳國彥; 丘逸民A data-logger designed for physical geography in field-study is introduced in this article. It uses either A. C. or D. C. power and is equipped with nine input channels and nine sampling time-periods. A replaceable memory cartridge used in this data logging system is a special feature that makes data recording easy either in a mobile (short-term) observation or in a fixed-point (long-term) operation.The specially designed memory cartridge also makes the collected-data easy and convenient for process when it is linked up with a personal computer. On account of its low-cot manu?facturing expenses and its data-process efficiency for academic research, the machine structure and its operation procedure become worthwhile to be introduced for examination.