欧美文化:New study finds warmer climate cause bigger waves in California
SACRAMENTO, the United States, Aug. 3 (Xinhua) -- The increasingly warming temperature has caused bigger wave heights along the coast of the U.S. state of California, putting the state's already climate-vulnerable coast on higher risk, according to a new study.
The study, published Tuesday in the Journal of Geophysical Research: Oceans, found that average winter waves have grown by as much as a foot (0.3 meter) since 1970; and surfs of at least 13 feet tall (about 4 meters) occurred at least twice as often between 1996 and 2016 than from 1949 to 1969.
The researchers aimed to find out how much wave heights had changed off California's coast during the winter months by analyzing seismic records over the past 90 years.
When waves ricochet off the coast, they send energy back toward the sea. When that energy hits incoming waves, it pushes energy downward, creating a seismic signal that can be detected, according to the study.
Interpreting the seismic data was an important method to understand the impact of wave heights on California's coast, said Peter Bromirski, the study's author and researcher emeritus at the Scripps Institution of Oceanography.
Higher waves with higher sea levels allowed more wave energy to reach vulnerable sea cliffs and enhanced coastal flooding as well as damage to coastal infrastructure, according to Bromirski.
These issues are of particular concern off California's coast, where sea cliffs have already started crumbling, bringing down homes in recent years.
During the past winter, severe storms and huge waves in California damaged piers and flooded parts of the scenic California Highway 1, one of the most popular tourist attractions in the state.
The study also added evidence to other research findings that ocean waves are becoming increasingly violent due to more extreme storms and wreaking havoc along coasts.
Because of rising sea level, the study warned that even moderate waves at the end of the 21st century might cause damage comparable to that of extreme weather events in the past.
相关文章
- 欧美文化:Mediterranean leaders appeal for urgent actions to tackle climate change
- 欧美文化:By merging First Republic, U.S. biggest bank gets bigger: WSJ
- 欧美文化:UN chief calls for accelerated climate action through global cooperation
- 欧美文化:NASA releases climate strategy
- 欧美文化:Anti-war rallies take place in southern California 20 years after U.S. invasion of Iraq
- 欧美文化:COP28 president-designate highlights need for unity in climate actions
- 欧美文化:Six killed in shooting in U.S. California
- 欧美文化:More rain, snow hit U.S. California as storm continues
- 欧美文化:U.S. saw over 1 mln firearm fatalities over past 30 years: study
- 欧美文化:Disasters displaced over 225 mln in Asia-Pacific in decade due to climate change: ADB report