The Anninghe-Zemuhe-Daliangshan-Xiaojiang (AZDX) fault zone is an important boundary between the South China block and southeastern (SE) Tibetan Plateau. Its strong earthquake potential has been highly concerned, because remarkable left lateral strike-slip motion has been observed in this fault zone. Using the linear spherical block model constrained by a refined GPS horizontal velocity field, we have derived the detailed partial slip deficits and the coupling fraction distributions along the AZDX fault zone, as well as self-consistent long-term slip rates on major active faults in SE Tibetan Plateau. Our results identified three remarkable slip deficit regions with high fault coupling fractions (0.6–1.0), including the southern segment of the Anninghe Fault (north of Xichang), the southern segment of the Daliangshan Fault (Butuo-Qiaojia), and southern terminus of the Xiaojiang Fault. These regions spatially coincide with the seismic gaps inferred from the spatiotemporal distributions of historical earthquake ruptures and paleoearthquake surveys, jointly implying their higher strong earthquake potential. Furthermore, combining with analyses of GPS data, previous geological and numerical simulation studies, we tentatively discussed the possible effect range of the Burma arc tectonic domain.

安宁河-泽木河-大凉山-小江(AZDX)断裂带是华南地块与青藏高原东南部(SE)的重要分界线。由于在该断层带中观测到明显的左横向走滑运动，其强震潜势受到高度关注。使用由精细 GPS 水平速度场约束的线性球块模型，我们推导出了沿 AZDX 断层带的详细局部滑动缺陷和耦合分数分布，以及主要活动断层的自洽长期滑动速率。青藏高原东南部。我们的结果确定了三个具有高断层耦合分数（0.6-1.0）的显着滑动缺陷区，包括安宁河断裂南段（西昌以北）、大凉山断裂南段（布拖-乔家）、和小江断裂南端。这些区域在空间上与历史地震破裂和古地震调查的时空分布推断出的地震间隙相吻合，共同暗示它们具有较高的强震潜力。此外，结合GPS数据分析、前期地质和数值模拟研究，初步探讨了缅甸弧形构造域的可能影响范围。