National Agency for Research and Innovation (BRIN), Jakarta, Indonesia.
Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore.
Sci Data. 2023 Jul 1;10(1):421. doi: 10.1038/s41597-023-02274-0.
Land subsidence in cities along the northern coastline of Java has been at a worrying level. Monitoring efforts using geodetic data reveal that Jakarta, Pekalongan, Semarang, and Demak subside at least ~9x faster than the present-day rate of global sea level rise, which affects the cities' future urban viability. In this study, we publish a time series of the precise 3D displacements observed by twenty continuous Global Navigation Satellite System (GNSS) stations between 2010 and 2021. These are the first open-to-the-public and rigorously processed GNSS datasets that are useful for accurately quantifying land subsidence in the densely populated sinking cities in Java. The data also provides a way to tie other geodetic observations, such as Interferometric Synthetic Aperture Radar (InSAR), to a global reference frame in an attempt to build worldwide observations of coastal land subsidence.
爪哇岛北海岸线城市的地面沉降已经到了令人担忧的程度。利用大地测量数据进行的监测工作表明，雅加达、勿加泗、三宝垄和德马克的沉降速度至少比目前全球海平面上升速度快 9 倍，这影响了这些城市未来的城市生存能力。在这项研究中，我们发布了 2010 年至 2021 年间二十个连续全球导航卫星系统 (GNSS) 站观测到的精确三维位移时间序列。这些是第一批公开的、经过严格处理的 GNSS 数据集，可用于准确量化爪哇人口密集沉降城市的地面沉降。这些数据还提供了一种将其他大地测量观测（如合成孔径雷达干涉测量 (InSAR)）与全球参考框架联系起来的方法，以试图建立全球沿海地面沉降观测。
