T-LIDAR imaging of active faults - Does fault-surface roughness reflect repeated coseismic slip events?

活动断层的 T-LIDAR 成像 - 断层表面粗糙度是否反映了重复的同震滑动事件？

• 批准号: 150448127
• 负责人: Professor Dr. Klaus Reicherter
• 金额: --
• 依托单位: Laboratory of Mineralogy and Geology
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/150448127?language=en
• 关键词: LIDAR; imaging; active; faults; Does

Main aims of the planned investigations are to analyze the tectonic geomorphology and paleoseismology of known active faults that display post-glacial fault scarps with groundbased laser-scanning techniques (T-LIDAR – terrestrial Light Detection And Range) to reconstruct the faulting history along surface-rupturing scarps, and to test the potential of selected locations to calibrate the roughness-index method for active faults. LIDAR techniques will be used for surface evaluation of limestone bedrock scarps and roughness analysis of the scarp surfaces. As the footwall of a normal fault undergoes continued uplift, the development of fault scarps by repeated earthquakes forms a steep polished fault plane (free face) that is subject to differential weathering through time (degradation, karstification, bio-erosion). Therefore, the upper parts of scarps are usually characterized by more intense weathering in comparison to the base. Goals of the LIDAR investigations are to reveal the slip history of known and dated active faults and to establish a relative age estimation of the coseismic slip events along limestone fault scarps in the Mediterranean region (e.g., Greece, Italy, FYROM). Furthermore, the LIDAR approach and the point cloud analyses have a potential to constitute a supplementary methods for the absolute dating with cosmogenic nuclides. If the relative age assessment will be successful, controlled sampling for the costintensive absolute dating, hence, expenses may be reduced and time economized for scarps, which developed since the last glacial maximum (LGM).

计划研究的主要目的是分析已知的活性故障的构造地貌和古植物学，这些断层显示了带有基于地面的激光扫描技术（T-l-LIDAR - 陆生光检测和范围）的冰川后断层斜杆，以重建沿表面破裂的缺陷型疤痕，以实现较差的位置，以验证所选择的较差的较差的方法。激光雷达技术将用于对石灰石基岩坡道的表面评估和对坡度表面的粗糙度分析。随着正常断层的足球持续升高，反复地震的断层疤痕的发展形成了钢制抛光断层平面（自由面），该平面受到不同的风化（降解，karsonstification，karsonstification，bio ersosion）。因此，与底座相比，雪橇的上部通常以更强烈的风化为特征。 LIDAR调查的目标是揭示已知和过时的活性断层的滑移历史，并建立沿地中海地区石灰石断层陡峭的coseis震滑事件（例如，意大利，意大利，Fyrom）的相对年龄估计。此外，LIDAR方法和点云分析具有构成与宇宙核素绝对约会的补充方法的潜力。如果相对年龄评估将是成功的，则对成本密集型的​​绝对约会进行了受控采样，因此，自上次冰川最大值（LGM）以来，Scarps的费用可能会减少，并且时间为经济化。