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| 題 名 | 臺灣地震模型之孕震構造及參數建置過程與方法=The Methodology and Process of Establishing Seismogenic Structures and Parameters in Taiwan Earthquake Model |
|---|---|
| 作 者 | 莊怡蓉; 徐澔德; | 書刊名 | 中興工程 |
| 卷 期 | 166 2025.01[民114.01] |
| 頁 次 | 頁D1-D11 |
| 分類號 | 354.4 |
| 關鍵詞 | 臺灣地震模型; 孕震構造; 構造地形; 地震危害度評估; Taiwan earthquake model; Seismogenic structure; Tectonic geomorphology; Seismic hazard analysis; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 臺灣位於板塊聚合邊界,活動斷層遍布全島,為了瞭解斷層活動的特性,在臺灣地震模型(Taiwan earthquake model, TEM)的計畫架構下,於 2012 年開始建立全臺的孕震構造資料庫。2016 年發布了第一版孕 震構造分布圖,其中涵蓋 38 條孕震構造,並蒐集前人文獻與野外調查資料建立各斷層的長度、面積、地震規模、 長期滑移速率、地震回歸週期等參數,並應用在機率式地震危害度評估(Probabilistic seismic hazard analysis, PSHA)中。2020 年本團隊利用高解析度的數值地形重新檢討各構造的位置並新增孕震構造,發表了第二版的孕 震構造資料庫。該資料庫涵蓋 45 條孕震構造,新增了不同的地震規模與孕震厚度評估方式,同時增加了各參數 的誤差範圍。本文主要重點介紹臺灣地震模型中,孕震構造位置的判釋過程與其準則,以及參數建立的方法。值 得注意的是,這些參數的最大值和最小值,概念上是該參數在極端狀況下的極大值和極小值,並非利用統計方式 考慮各參數在常態分佈下所計算的標準差值,因此在進行地震災害的分析時,不能直接將各參數的最大和最小值 利用慣常的邏輯樹權重來計算。 |
| 英文摘要 | Taiwan is located at a convergent plate boundary, and the active faults are distributed across the island. To better understand the characteristics of active faults, we began to construct a seismogenic structure database of Taiwan under the Taiwan Earthquake Model (TEM) project in 2012. In 2016, the distribution map with 38 seismogenic structures was first released, integrating parameters from various studies and fieldwork results. The database includes fault length, rupture area, magnitude, long-term slip rate, and recurrence interval, which are used in probabilistic seismic hazard analysis (PSHA) calculations. In 2020, we re-examined the location of structures with a high-resolution digital elevation model and added new structures, expanding the database to 45 seismogenic structures. New methods for estimating earthquake magnitude and seismogenic thickness were applied, and the uncertainty ranges for each parameter were considered. This article focuses on introducing the evidence and processes for identifying seismogenic structures, and illustrates the method for establishing fault parameters. Notably, the listed maximum and minimum values of parameters represent extreme numbers, not standard deviations, and cannot be directly used with conventional logic tree weighting in seismic hazard analysis. |
本系統中英文摘要資訊取自各篇刊載內容。