Green Open Space Form/Morphology Characteristics Which Function Ecologically as Rain Water Absorber in Kalirungkut Subdistrict - Angelia, Tisa; Department of Architecture, Faculty of Architecture, Design, and Planning, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia (Institut Teknologi Sepuluh Nopember, 2018)