能高山地區地質環境之遙測研究

A Remote Sensing Study on the Geological Environment in NengKaoShan Areas

劉進金(JK Liu) ； 張寶堂(PT Chang) ； 黃金鴻(CH Huang) ； 彭淼祥(MS Perng) ； 李元炎(YY Lee)

《航測及遙測學刊》 1卷1期 (1996/12) Pp. 1-22

https://doi.org/10.6574/JPRS.1996.1(1).1

摘要

本文是農委會遙測小組資助之「遙測技術應用於高山地質環境研究計畫」之部份工作成果。研究區在花蓮新城至壽豐與南投梨山至卡社山之間海拔1,500公尺以上之山區，面積約1,700平方公里，以3262公尺的能高山居研究區之中央，為中央山脈稜線上之山峰。該區為本省地震與地體構造單元上較活躍地區之一，地質上屬於中央山脈地質區，露出地層有古生代晚期至中生代之大南澳片岩，以及古第三紀變質至亞變質岩之畢祿山層與廬山層。本研究發現研究區有大小規模山崩高達4000餘處。根據衛星影像及航照之地形特徵、色調、水系變化及線型等特性之綜合研判，研究區可分為八個岩性單位，分別為Y層、S層、K層、T層、TM層、Eh層、M層及Qa層。其中K層出露大致以三棧溪為界。Y層則在沙婆礑溪以南露出。研究區中發現數條線型構造，其代表意義值得進一步調查。野外查核也嘗試利用GPS定點查核作業，初步發現效果良好。

關鍵字

遙測 ； 地質環境 ； 高山

並列摘要

Due to the low accessibility of high mountains in Taiwan, there is little knowledge of the geologic conditions in these areas. This paper is a part of the study sponsored by Remote Sensing Development Committee of Agriculture Council to col1ect geologic information in NengKaoShan Area, with a size around 1700 square kilometers. The area covers also a part of the ridge line of Central Mountain Range. The results show that there are more than 4000 landslides in this area. The area is in the Central Mountain Geologic Province with two old geologic formations, i.e. The Tananao Schists and Bilusan/ Lusan Formation. The Tananao Shists Formation (incl. Taluko Belt and Yuli Belt) spans from Paeleozoic to Mesozoic time. The Pilushan/ Lushan Formation was in Paeleo-Tertiary Period. Eight lithologic units can be readily identified from both the satellite images and aerial photographs. They are denotated as Y, S, K, T, TM, Eh, M, and Qa. The K unit exists to the noth of SanChanSi, whereas the Y unit takes place to the south of SaPoDanSi. In this year, GPS is used to position the outcrop when field works were conducted. It is conc1uded that GPS linked to a notebook computer is a good tool for improving the efficiency and potentially an important tool for automating field work.

並列關鍵字

remote sensing ； geological environment ； high mountain