Abstract Fault damage zones can act as a preferential corridor for fluid flow in the subsurface, and for this reason the characterization of their structure, including the attributes of the associated fracture network, is fundamental. In this work, we characterize the damage zone of the Qala fault, a normal fault developed in platform carbonates of the Gozo Island (Maltese Islands). We propose a new workflow that combines scanline and scan-area analysis applied on a high resolution DOM. Linear scanlines allow to characterize fracture spatial distribution, detect stationary area and identify damage zone width. Areal sampling permits to extract the fracture parameters matching the stationary 1D domains. This new approach allows us to: (1) univocally separate the damage zone from the background fractures, (2) identify fracture corridors, (3) collect fracture parameters (length, trend, density, intensity, spacing and topology), (4) identify the REV of the fracture density, intensity and topology and (5) characterize the fracture network connectivity.

中文翻译：

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在公里级数字露头模型上结合扫描线和扫描区域分析的损伤带表征：Qala 断层 (Gozo)

摘要 断层损伤带可以作为地下流体流动的优先通道，因此，其结构的表征，包括相关裂缝网络的属性，是基础。在这项工作中，我们描述了 Qala 断层的损伤带，这是在戈佐岛（马耳他群岛）的台地碳酸盐岩中发育的正断层。我们提出了一种新的工作流程，它结合了应用于高分辨率 DOM 的扫描线和扫描区域分析。线性扫描线允许表征裂缝空间分布，检测静止区域并识别损伤区域宽度。区域采样允许提取与固定一维域匹配的裂缝参数。这种新方法使我们能够：(1) 明确地将损伤区与背景裂缝分开，(2) 识别裂缝走廊，