GEOL 1 Lecture Notes - Lecture 23: Longshore Drift, Outer Banks
21 Sep 2020
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1998: just 120 ft from the ocean. Q: what was the average rate of erosion in this area form. To save the lighthouse, in 1999-2000 it was moved 1900 ft inland over the course of 23 days (costs million) Can occur along emergent & submergent coasts. Line along the coast marking where erosion will move the shoreline to in the future. The e-10 line shows you where the shoreline will be in 10 years from now given the current rate of erosion. Erosion rate x interval = e-line distance. Ex: you want t know where the coastline will be in. 10 ft/yr * 10 yrs = 100 ft father inland. 2010: tourism generated billion for sc. Protect the shore in one of two ways: Concrete wall built parallel to the sea to protect coast behind wall. Causes a lot of erosion on the other side.
