Common 'hard' coastal defenses, like concrete sea walls, might struggle to keep up with increasing climate risks. A new study shows that combining them with nature-based solutions could, in some contexts, create defenses which are better able to adapt.
Common 'hard' coastal defenses, like concrete sea walls, might struggle to keep up with increasing climate risks. A new study shows that combining them with nature-based solutions could, in some contexts, create defenses which are better able to adapt.
"Sea walls, dikes, dams and breakwaters, the so-called traditional hard measures, despite being the most popular coastal defenses globally and with proven track records, are facing challenges to keep pace with increasing climate risks," explained Lam Thi Mai Huynh, a doctoral studentfrom the graduate program in sustainability science at the University of Tokyo and lead author of a new study on coastal defenses.
The researchers analyzed three key aspects of each type of defense: 1. risk reduction ; 2. climate change mitigation ; and 3. cost-effectiveness over a 20-year period. While acknowledging the limits imposed by the lack of available research on extreme and high-risk situations, Huynh and Gasparatos still believe that this study supports the idea of investing in nature-based solutions for coastal defense in lower-risk areas. Research like this has important implications for policymakers, coastal planners and communities looking to make evidence-based decisions.
Floods Landslides Oceanography Global Warming Environmental Policy Tsunamis Climate
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