本日選文（共 1 篇）。
[742] 尺度相依的地震成核：對地震活動、構造與實驗室實驗的啟示
Scale-dependent earthquake nucleation: Implications for seismicity, tectonics and laboratory experiments
- 期刊：Tectonophysics (ScienceDirect)
- DOI：10.1016/j.tecto.2026.231156
- 原文連結：連結
Summary (EN) The paper unifies strength-based and fracture-energy views of earthquake nucleation into a single scale-dependent framework in which nucleation stress depends on asperity size relative to a fault characteristic dimension (typically the down-dip width W). Three regimes are identified: small/ thin brittle zones where rupture requires exceeding rock strength, intermediate-sized asperities governed by both strength and energy criteria, and very large seismogenic structures that can fail under very low differential stress. By linking nucleation physics to statistical seismology and tectonics, the framework explains systematic variations in frequency–magnitude distributions (b-values) across settings and provides testable predictions for seismic catalogs and physics-based hazard models.
重點摘要（繁中） 本文將以強度為主與以斷裂能為主的地震起始機制統一為一個尺度相依的框架，起始應力取決於微凸起（asperity）相對於斷層特徵尺寸（通常為向下傾斜的寬度 W）的大小。研究指出三種制約情形：在薄而脆性的地殼區域，破裂需超過岩石強度；中等尺徑的微凸起由強度與能量判據共同控制；而大型生震構造則可在極低差應力下失穩。此框架將起始物理與統計地震學及構造背景相連，解釋不同構造環境下频次–震級分布（b 值）的系統性差異，並提出可由地震目錄檢驗的預測以供震害模型使用。