Determination of local site characteristics in the Hanoi urban area using microtremor data - Tien-Hung Nguyen; Hong-Phuong Nguyen; Le-Minh Nguyen; Che-Min Lin; Van-Duong Nguyen; Van-Bang Phung; The-Truyen Pham; An-Nguyen Tran; Quang-Khoi Le (Acta Geophysica, 2026)