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題 名 | An Analysis of Tectonic Environment and Contemporary Seismicity of Frontal Orogeny in Central Taiwan=臺灣中部造山帶前緣強震發生的構造環境分析 |
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作 者 | 鄭魁香; | 書刊名 | 高苑學報 |
卷 期 | 8 2002.07[民91.07] |
頁 次 | 頁75-88 |
分類號 | 354.4 |
關鍵詞 | 弧地帶; 活動構造帶; 地震活動性; Arcuate zone; Active tectonic zone; Seismic activity; Aftershock series; |
語 文 | 英文(English) |
中文摘要 | 臺灣中部造山帶前緣呈現為一弧形逆衝構造體系。每個弧形帶分別由多個不同尺度但各自獨立的次級弧形構造組成。而每一個弧形構結都有其個自獨立的幾何、運動和動力學特徵,是典型的褶皺-逆衝帶,但同時各個次級弧形構造間卻又有自相似特性。臺灣中部弧形系列構造帶,由運動學看來,是從弧形頂部向西逆衝向兩側過渡到斜衝,到弧凹處的逆衝為止。每個弧形構造在深耜均狺前斷坡、斜斷坡和側斷坡所組成。 每一個地震形變帶與獨立活動的弧形逆衝構造間可能有一定的對應關係存在。大地震發生在規模較大的弧形構造上,而中小地震則發生在規模較小的次級弧形構造上。 在對臺灣中部地區弧形逆衡體系的空間位置與地震活動間的關係分析基礎上,本文歸納出中部弧型逆衡地震帶的地震活動特徵。 |
英文摘要 | The central region of Taiwan shows an arcuate thrust tectonics. Every arcuate belt is composed of a series of varying scales of sub-arcs, as a separate fold-and-thrust belt with independent characteristics of geometry, kinematics and mechanics and a self-similar system as well. The kinematics of arc changes from thrusting on the top of the arc to the oblique thrusting and wrenching at the sections, and finally thrusts to the bottom of the arc. The arcuate thrust tectonics is composed of frontal, lateral and oblique ramps at depth. Each earthquake deformation belt is related to the independent arc. Strong earthquakes correspond to the large-scale arcs, and medium earthquakes to the small, even to the smaller ones. Finally, the mapping analysis is carried on between the contemporary seismicity and the space area of the arcuate thrusting tectonic system in the central region of Taiwan, especially on strong Chi-Chi aftershock series. |
本系統中英文摘要資訊取自各篇刊載內容。