Fault control on distribution of sag-ponds in Imogiri, Bantul, Yogyakarta, and Its implications for the existence of the Opak active faultAl Hussein Flowers Rizqi, Fadhilah Elsa Putra, Fanssyah Widianto, Muhammad Erlandi, Ghani Abdillah Ahmad, Robert Timotius Tuska and Evan Rosyadi OgaraE3S Web Conf., 688 (2026) 01015DOI: https://doi.org/10.1051/e3sconf/202668801015