Catastrophic storms like Hurricane Katrina, as well as general concerns about global climate change, have increased the knowledge of the impacts of coastal erosion. Retreat of the coasts have not only ecological impacts but economic ones. Identification also known as retreat of the coast, coastal erosion is a little understood phenomenon in which climate changes and the result of human activities influence the loss of coasts. Effects the economic studies suggest that the impact of erosion affects several economic sectors, including agriculture, fisheries, navigation and maritime transport and tourism / recreation. Geography a study on the impact of erosion in the Philippines showed that the communities that depend on fishing for their livelihood were particularly affected by erosion. Size in the U.S. a study of erosion in Louisiana estimated that the State of the Gulf Coast has lost an average of 40 square kilometers to the year due to erosion since the 1950s.
Important erosion in Louisiana and the U.S. Gulf Coast may adversely affect the country’s economy due to the concentration of oil refineries and energy production in that region. Experts estimated that even a break of one week three in the supply of petroleum due to coastal erosion could cost the economy countries many jobs and many million less in revenue.