Abstract

In this research note, we demonstrate the applicability of interferometric analyses (InSAR) of RADARSAT 2 (RS2), SENTINEL 1 (S1) and RADARSAT Constellation Mission (RCM) datasets to characterize and monitor landslides along a high-risk section of the national railway transportation corridor traversing the Thompson River valley, British Columbia. As a geomorphically active landform, the North Slide is an ideal case study for field-testing and evaluating slope change-detection monitoring incorporating satellite, aerial and ground-based geospatial technologies. RS2, S1 and RCM InSAR datasets provide valuable baseline spatial and temporal information on movement of the landslide near critical railway infrastructure when benchmarked with real-time kinematic (RTK) global navigation satellite system (GNSS) measurements, uninhabited aerial vehicle (UAV) photogrammetry, bathymetric soundings, and ground observations. We demonstrate that monitoring unstable slopes and infrastructure at risk with multiple high spatial- and temporal-resolution satellite SAR platforms is a cost-effective natural hazard management practice that also provides important geoscience information to help develop appropriate mitigation and climate adaptation measures.

摘要

在本研究报告中，我们展示了 RADARSAT 2 (RS2)、SENTINEL 1 (S1) 和 RADARSAT Constellation Mission (RCM) 数据集的干涉测量分析 (InSAR) 在表征和监测国家铁路高风险路段的滑坡方面的适用性穿越不列颠哥伦比亚省汤普森河谷的交通走廊。作为地貌活跃的地貌，北滑坡是结合卫星、空中和地面地理空间技术进行实地测试和评估坡度变化检测监测的理想案例研究。RS2、S1 和 RCM InSAR 数据集以实时运动学 (RTK) 全球导航卫星系统 (GNSS) 测量为基准，提供有关关键铁路基础设施附近滑坡运动的宝贵基线空间和时间信息，无人机 (UAV) 摄影测量、测深探测和地面观测。我们证明，使用多个高时空分辨率卫星 SAR 平台监测不稳定斜坡和处于风险中的基础设施是一种具有成本效益的自然灾害管理实践，它还提供重要的地球科学信息，以帮助制定适当的缓解和气候适应措施。