• 作者： 陳肇夏
• 作者服務機構： 經濟部中央地質調?所
• 中文摘要： 臺灣97處?泉區之中有70處位於中央山脈，各?泉區?泉最高?度自36°C至99°0不等，已探勘之五處地熱區其 地下最高?度達159°C至226°C 。中央山脈長約三百公里，?四十至七十公里（含雪山山脈），?有百座以上高峰海拔 在3000公尺以上至3995公尺，地形起伏甚大，2公里?（河床上?泉與山峰之水平距離，以符號D表示之）高差（ 山峰與?泉之標高差，以符號ΔH代表之）達500-1500公尺，10-14公里?高差達2500-3000公尺。地形分析結果 顯示D's = 2-10公里以及ΔH's= 800-2100公尺有利於高?地熱區（?泉最高?度≧85°C或Tsio2 > 140°C)之形成， 而D's=2-6或6.7公里以及ΔH's = 700-1700公尺僅能形成低?地熱區（?泉最高?度<60°C或Tsio2< 110°C ) 。根據本文提出之簡單地熱模式，預料在中央山脈兩翼或主要分水嶺之兩側應有熱水上升帶，?地熱探勘之理想目標。
• 英文摘要： Of the 97 hot-spring areas in Taiwan, 70 are located in Central Range. The maximum spring temperature in each area ranges from 36°C to 99°C, and the maximum subsurface temperature in the five explored areas ranges from 159°C to 226°C. The Central Range is approximately 300 Km long and 40 to 70 Km wide (including the Hsuehshan Range), comprising more than 100 mountain peaks that are 3000 to 3995 m above sea level. Topographic relief is high, ranging from 500-1500 m (elevation difference between a mountain peak and a spring on river bed, designated by AH) in 2 Km (horizontal distance between the mountain peak and the spring, designated by D) to 2500-3000 m in 10-14 Km. Analysis of topographic effect on geothermal system reveals that D's = 2-10 Km and AH's= 800-2100 m favor occurrence of high temperature thermal areas with maximum spring temperatures ≧ 85°C or Tsio2 ≧ 140°C, whereas D's = 2-6 or 6.7 Km and AH's = 700-1700 m can only form low temperature thermal areas with maximum spring temperatures <60°C or Tsio2 < 110°C. A simple model for geothermal systems in the Central Range is proposed, and ascending zones of thermal water are expected to occur on each side of a major water divide or on both flanks of the Central Range, which are good targest for geothermal exploration.
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