Science Unit 5 Lesson 3 Flashcards
What is beach nourishment?
Act of adding sediment and sand to a beach to elevate and extend the shoreline into the water. Beach nourishment is a common method for fighting beach and shoreline erosion in the United States.
Where does the sand from beach nourishment come from?
This land and sediment is usually dredged from offshore
What is the definition of dredge?
To dig or pull up
Discribe the overlook of beach nourishment?
The first project of beach nourishment was in 1922 at Coney Island, New York. Since then, at least 970 projects have brought sand to more than 6,050 kilometers of U.S. shoreline along the Atlantic and Gulf coasts. When beaches are eroding, beach nourishment can protect people and property from the effects of hurricanes and coastal storms. Many projects in the United States are responses to strong hurricane erosion similar to that shown in the images above of North Ocean City, Maryland.
Why is beach nourishment so popular in the U.S.?
Hurricanes.
When beaches are eroding, beach nourishment can protect people and property from the effects of hurricanes and coastal storms. Many projects in the United States are responses to strong hurricane erosion similar to that shown in the images above of North Ocean City, Maryland.
Why is beach nourishment so expensive?
The task of moving sand from one location to another is an expensive feat. It requires machines, manpower, and time in order to pump sand from an offshore location and relocate it to the beach.
How long can beach nourishment take?
months and it can/usally cost millions
Myrtle Beach SC Beach Nourishment Timelines
August 1–15, 2018: Install subline, which is a large steel pipe that leads from the dredge (ship) to the shore. Prepare and stabilize the pipelines.
August 15–September 8, 2018: Begin beach fill for approximately 4 miles of beach.
August 30–September 11, 2018: Install subline, which is a large steel pipe that leads from the dredge (ship) to the shore. Prepare and stabilize the pipelines.
September 12–November 11, 2018: Begin beach fill for appoximately 8 miles of beach.
October 9–18, 2018: Install subline, which is a large steel pipe that leads from the dredge (ship) to the shore. Prepare and stabilize the pipelines.
November 12–December 8, 2018: Begin beach fill for approximately 2 miles of beach.
For the Myrtle Beach in South Caroline, how much did the beach nourishment cost?
$34.8 million
How much sand was needed in the Myrtle Beach in South Carolina project?
1.4 million cubic years of sand over 14 miles of beach
Quantity of Sand Used in Carolina Beach, NC Beach Nourishment Project
Quantity of Sand Used in Carolina Beach, NC Beach Nourishment Projects
1985 – 792,000 cubic yards of sand
1988 – 951,000 cubic yards of sand
1991 – 1,009,000 cubic yards of sand
1995 – 1,158,000 cubic yards of sand
1998 – 3,300,000 cubic yards of sand
2001 – 1,000,000 cubic yards of sand
2004 – 680,000 cubic yards of sand
What did the Carolina beach project show?
Clearly, beach nourishment is a temporary solution. It is only a matter of time before the pumped sand is eroded again. However, on coasts such as North Carolina where hurricanes are more prevalent, the upkeep of a project such as beach nourishment is more constant. As shown in the data, Carolina Beach had to pump sand in every 3–4 years to keep up with beach erosion.
The beach nourishment process required more sand each time between the years of 1985–1998 in an effort to rebuild the beach. Hurricanes during this time period contributed to massive sand erosion, causing beach nourishment projects to be continually undertaken to maintain beachfront.
/That beach nourishment was a temporary fix.
Where is beach nourishment more constant?
Where hurricanes occur
In 2018, Buxton Beach, North Carolina finished a beach nourishment project
2.6 million cubic yards of sand
2.9 miles of beach restored
$22 million spent
In 2013–2014, the town of Southampton, New York underwent a beach nourishment project.
2.5 million cubic yards of sand
6 miles of beach restored
$25 million spent
