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Disappearing cities on US coasts

Earth Sciences

Disappearing cities on US coasts

L. O. Ohenhen, M. Shirzaei, et al.

This groundbreaking study by Leonard O. Ohenhen, Manoochehr Shirzaei, Chandrakanta Ojha, Sonam F. Sherpa, and Robert J. Nicholls uncovers alarming projections of land inundation in 32 major US coastal cities due to sea-level rise by 2050. The research reveals that even with coastal defenses, significant areas—affecting thousands of people and properties—are at risk, emphasizing the critical adaptation challenges these cities face.

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Playback language: English
Abstract
This study combines high-resolution vertical land motion and elevation datasets with projections of sea-level rise to quantify potential inundated areas in 32 major US coastal cities by 2050. Even with current coastal defenses, 1,006–1,389 km² of land, impacting 55,000–273,000 people and 31,000–171,000 properties, is threatened. Ignoring land subsidence leads to inaccurate projections. The study highlights the significant adaptation challenge facing US coastal cities.
Publisher
Nature
Published On
Mar 06, 2024
Authors
Leonard O. Ohenhen, Manoochehr Shirzaei, Chandrakanta Ojha, Sonam F. Sherpa, Robert J. Nicholls
Tags
sea-level rise
coastal cities
land motion
adaptation challenges
inundation
projections
land subsidence

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