期刊
NATURE CLIMATE CHANGE
卷 10, 期 10, 页码 946-+出版社
NATURE PORTFOLIO
DOI: 10.1038/s41558-020-0874-1
关键词
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资金
- California Safe Drinking Water, Water Quality and Supply, Flood Control, River and Coastal Protection Bond Act of 2006 (Proposition 84)
- Ocean Protection Council
- USGS Coastal and Marine Hazards and Resources Program
Projected sea-level rise will raise coastal water tables, resulting in groundwater hazards that threaten shallow infrastructure and coastal ecosystem resilience. Here we model a range of sea-level rise scenarios to assess the responses of water tables across the diverse topography and climates of the California coast. With 1 m of sea-level rise, areas flooded from below are predicted to expand similar to 50-130 m inland, and low-lying coastal communities such as those around San Francisco Bay are most at risk. Coastal topography is a controlling factor; long-term rising water tables will intercept low-elevation drainage features, allowing for groundwater discharge that damps the extent of shoaling in similar to 70% (68.9-82.2%) of California's coastal water tables. Ignoring these topography-limited responses increases flooded-area forecasts by similar to 20% and substantially underestimates saltwater intrusion. All scenarios estimate that areas with shallow coastal water tables will shrink as they are inundated by overland flooding or are topographically limited from rising inland.
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