Is It Feasible to Use a Single Remote Sensing Optical Water Index for Rapid Mapping of Water Resources?

• DOI: 10.5194/nhess-2024-214
• Publication Date: 2024-12-02T10:58:31Z
• Authors: Yuqing Wang; Yijie Ma; Tingsong Gong; Xueyue Liang; Yaochen Qin; Haifeng Tian; Jie Pei; Li Wang

Abstract. Water resources are an important component of the earth's system, and frequent occurrence floods droughts in context current climate change makes rapid accurate monitoring water particularly important. The optical index (OWI) is a commonly used method for extracting areas on basis remote sensing images, often with high level automation. However, selecting right OWI challenging due to variety types. To quantitatively evaluate differences mapping potential different OWIs surface water, we selected 12 conduct comparative experiments among five types based Landsat-8 Sentinel-2 images. results revealed that Normalized Difference Index (NDWI) was better turbid Multi-Band (MBWI) shaded Modified (MNDWI) green Automated Extraction (AWEIsh)was swamp saltwater. has higher ability classify than Landsat-8. Our work provides prior experience fast case or droughts.