Disappearing cities on US coasts

Ohenhen, Leonard O., Shirzaei, Manoochehr, Ojha, Chandrakanta, Sherpa, Sonam F. and Nicholls, Robert J, (2024). Disappearing cities on US coasts. Nature, 627 108-115

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    Author Ohenhen, Leonard O.
    Shirzaei, Manoochehr
    Ojha, Chandrakanta
    Sherpa, Sonam F.
    Nicholls, Robert J
    Title Disappearing cities on US coasts
    Appearing in Nature
    Volume 627
    Publication Date 2024-03-06
    Place of Publication Berlin
    Publisher Springer Nature
    Start page 108
    End page 115
    Language eng
    Abstract The sea level along the US coastlines is projected to rise by 0.25–0.3 m by 2050, increasing the probability of more destructive flooding and inundation in major cities1,2,3. However, these impacts may be exacerbated by coastal subsidence—the sinking of coastal land areas4—a factor that is often underrepresented in coastal-management policies and long-term urban planning2,5. In this study, we combine high-resolution vertical land motion (that is, raising or lowering of land) and elevation datasets with projections of sea-level rise to quantify the potential inundated areas in 32 major US coastal cities. Here we show that, even when considering the current coastal-defence structures, further land area of between 1,006 and 1,389 km2 is threatened by relative sea-level rise by 2050, posing a threat to a population of 55,000–273,000 people and 31,000–171,000 properties. Our analysis shows that not accounting for spatially variable land subsidence within the cities may lead to inaccurate projections of expected ex
    Copyright Holder author(s)
    Copyright Year 2024
    Copyright type Creative commons
    DOI 10.1038/s41586-024-07038-3
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    Created: Fri, 27 Sep 2024, 04:27:14 JST by Haideh Beigi on behalf of UNU INWEH