地理漫步·世界地理英语30篇（1）

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所罗门群岛珊瑚与海啸风险

The Solomon Islands sit along the Pacific Ring of Fire, where tectonic plates collide and trigger powerful undersea earthquakes.
When such quakes occur offshore, they displace massive water columns, generating tsunamis that travel at jet speeds across the ocean.
Healthy coral reefs act like natural breakwaters: their rough, porous structures absorb up to 97% of incoming wave energy.
However, decades of blast fishing, sediment runoff, and coral bleaching have degraded over 40% of these protective barriers.
Villages built directly on flat coastal terraces now face higher flood risk, especially during high tide combined with tsunami surges.
Local marine rangers map reef health using underwater drones and train youth to monitor coral recovery after cyclones.
New early-warning systems include community sirens powered by solar panels and bilingual SMS alerts in Pijin and English.
Scientists model how even modest reef restoration—just 100 meters wide—can reduce inland wave height by half.
Unlike artificial seawalls, living reefs grow with sea level rise and support fish stocks that feed thousands of families.
Protecting corals here is not only ecological stewardship—it is frontline disaster resilience for island nations.