4 results
Search Results
Now showing 1 - 4 of 4
Item 陳有蘭溪四個小流域崩塌與土石流發生頻率之研究(國立臺灣師範大學地理學系, 2001-05-01) 張瑞津; 沈淑敏; 劉盈劭The Chenyulan river basin, located in central Taiwan, is characterized by frequent landslides and debris flows. The catastrophic hazards, especially that induced by typhoon Herb in 1996, have drawn great concerns islandwide. It is believed that a better understanding on the spatial and temporal distribution of these rapid geomorphic changes (i.e., landslides and debris flows) over longer time span will be very helpful on risk assessment and hazard mitigation in this region. The method applied was to make a thorough examination of 17~29 versions of aerial photographs (ranging from 1951 to 2000) of four selected small catchments located in the northern part of the Chenyulan basin (i.e., Tzuzaichiao, Shanganchiao, Peiputzai, and Fengchiu catchment). According to the frequency of landslides and debris flows which identified from available photographs over last 50 years, the Shanganchiao catchment is the least responsive to external inducing events among four catchments, while the Fengchiu catchment is the most, which has experienced six debris flow events over the period.Item 陳友蘭溪四個小流域崩塌與土石流發生頻率之研究(地理學系, 2001-05-??) 張瑞津; 沈淑敏; 劉盈邵The Chenyulan river basin, located in central Taiwan, is characterized by frequent landslides and debris flows. The catastrophic hazards, especially that induced by typhoon Herb in 1996, have drawn great concerns islandwide. It is believed that a better understanding on the spatial and temporal distribution of these rapid geomorphic changes (i.e., landslides and debris flows) over longer time span will be very helpful on risk assessment and hazard mitigation in this region. The method applied was to make a thorough examination of 17~29 versions of aerial photographs (ranging from 1951 to 2000) of four selected small catchments located in the northern part of the Chenyulan basin (i.e., Tzuzaichiao, Shanganchiao, Peiputzai, and Fengchiu catchment). According to the frequency of landslides and debris flows which identified from available photographs over last 50 years, the Shanganchiao catchment is the least responsive to external inducing events among four catchments, while the Fengchiu catchment is the most, which has experienced six debris flow events over the period.Item 和社溪流域的崩塌地變遷與各子集水區土石流發生的比較(中華民國工程環境學會會刊委員會, 2013-01-01) 劉盈劭; 沈淑敏; 張瑞津Item 從歷年航空照片判釋北磺溪流域之崩塌和土石流特徵(中國地理學會, 2005-10-01) 沈淑敏; 劉盈劭; 張瑞津