Analysis of Urban Areas with Built-up Land Index Using ALOS PALSAR-2 Satellite Imagery (Case Study: Surabaya City)Muhammad Nabil Hadjoe, Filsa Bioresita, Noorlaila Hayati and Timo BalzBIO Web Conf., 216 (2026) 06002DOI: https://doi.org/10.1051/bioconf/202621606002