Salsipuedes-Punta Morro, Baja California, Mexico 2014

This airborne LiDAR dataset collected by NCALM, covers two sites. Site one is a coastal strip (4.5 x 0.4 km) of Salsipuedes Bay, in Baja California, Mexico. It is centered on km 93 of the Ensenada-Tijuana Scenic Highway 1D traversing sea cliffs with steep slopes, cutting exhumed marine sediments of the Rosario formation that are capped in part by the basaltic Rosarito Beach formation. On the night of December 27, 2013, a 220m long segment of the highway, at km 93, started to slide down towards the ocean. The movement continued for several hours until it stabilized the following day after, having displaced a volume close to 300 x 10³ m³ of sandstone 35m down and 25m towards the Pacific Ocean. It took almost a year to repair this massive landslide and reestablish traffic through the main gateway to the Baja California Peninsula. This dataset was collected 186 days after the landslide when reconstruction was already taking place. Site two is Punta Morro, where Ensenada's science cluster is located, hosting CICESE, UNAM and UABC campuses.<p><br>Publications associated with this dataset can be found at <a href=\"http://calm.geo.berkeley.edu/ncalm/dtc.html\" target=\"_blank\">NCALM's Data Tracking Center</a></p>

本数据集为NCALM采集的机载激光雷达（airborne LiDAR）数据，包含两个研究区域。一号区域位于墨西哥下加利福尼亚州萨尔西普埃德斯湾（Salsipuedes Bay）的沿海地带（范围为4.5×0.4千米），以恩塞纳达-提华纳1D景观公路93公里段为中心，该路段途经陡坡海崖，切穿了部分被玄武岩质罗萨里托海滩组（Rosarito Beach formation）覆盖的、经抬升出露的罗萨里奥组（Rosario formation）海相沉积层。2013年12月27日夜间，该路段93公里处一段长220米的路段发生向海滑移，滑移过程持续数小时后于次日趋于稳定；此次滑移共位移约300×10³立方米的砂岩，垂直滑移距离达35米，向太平洋方向水平位移25米。此次大规模滑坡的修复工程耗时近一年，才恢复了这条作为下加利福尼亚半岛主要通行门户的路段的交通。本数据集采集于滑坡发生后186天，彼时修复重建工作已启动。二号区域为彭塔莫罗（Punta Morro），此处是恩塞纳达市的科技集群所在地，设有CICESE、UNAM及UABC的校区。与本数据集相关的研究成果可通过<a href="http://calm.geo.berkeley.edu/ncalm/dtc.html" target="_blank">NCALM数据跟踪中心</a>查询。