Abstract Geomorphological conditions along the Salsipuedes section of Tijuana-Ensenada Scenic Highway (TESH), on the northwestern coast of Baja California, promote the occurrence of slope instabilities which pose a severe threat to the daily basis highway operation. The monitoring systems used for risk management strategies can reduce the impact of landslides. Despite that, the landslides along the TESH have not been continuously monitored due to the high costs and tricky logistics of conventional monitoring techniques. Satellite SAR interferometry demonstrated to be a useful complementary tool for landslide monitoring. This study aims to investigate the potential of satellite interferometric SAR techniques, such as conventional DInSAR and Advanced DInSAR (IPTA approach), for landslide identification and characterization in the Salsipuedes region. For this purpose, ENVISAT ASAR descending and ascending images from the 2003–2010 period have been used. The obtained results showed that, despite the limitations of the techniques, they could be effectively used for the slope displacements detection and monitoring. Based on the results of the interferometric processing, six landslides that have been active during the study period were identified, their geometric parameters were obtained, and their displacement rates were quantified. The landslides were classified as very slow based on measured LOS displacement rates (up to 5.5 cm/yr).

中文翻译：

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卫星 SAR 干涉技术在墨西哥下加利福尼亚州蒂华纳 - 恩塞纳达风景公路沿线滑坡检测和监测中的应用

摘要 下加利福尼亚州西北海岸蒂华纳-恩塞纳达风景公路（TESH）萨尔西普德斯段沿线的地貌条件促进了边坡失稳的发生，严重威胁了公路的日常运营。用于风险管理策略的监测系统可以减少滑坡的影响。尽管如此，由于传统监测技术的高成本和棘手的后勤工作，TESH 沿线的滑坡并未得到持续监测。卫星 SAR 干涉测量被证明是滑坡监测的有用补充工具。本研究旨在调查卫星干涉 SAR 技术（如常规 DInSAR 和高级 DInSAR（IPTA 方法））在 Salsipuedes 地区滑坡识别和表征的潜力。为此，使用了 2003-2010 年期间的 ENVISAT ASAR 下降和上升图像。结果表明，尽管这些技术存在局限性，但它们可以有效地用于边坡位移检测和监测。根据干涉测量处理的结果，确定了研究期间活跃的六个滑坡，获得了它们的几何参数，并量化了它们的位移速率。根据测得的 LOS 位移速率（高达 5.5 厘米/年），滑坡被归类为非常缓慢。根据干涉测量处理的结果，确定了研究期间活跃的六个滑坡，获得了它们的几何参数，并量化了它们的位移速率。根据测得的 LOS 位移速率（高达 5.5 厘米/年），滑坡被归类为非常缓慢。根据干涉测量处理的结果，确定了研究期间活跃的六个滑坡，获得了它们的几何参数，并量化了它们的位移速率。根据测得的 LOS 位移速率（高达 5.5 厘米/年），滑坡被归类为非常缓慢。