QUESTIONS The Risks of Owning Property on Barrier Islands 1. Compare Figures 13.
ID: 289574 • Letter: Q
Question
QUESTIONS The Risks of Owning Property on Barrier Islands 1. Compare Figures 13.2Sa and 13.25b. What feature of a low-relief barrier island does the light-colored area of sand on Horn Island represent? a. b. What high-energy event could have produced this area of sand? 2. a. Based on information gleaned from the view and caption of Figure 13.25c, is Cedar Island a transgressive or regressive barrier island? b. What is the basis for your answer to 2a? Study the topographic map of Figure 13.27 on the following page, which shows two barrier islands, Assateague Island to the south and Fenwick Island to the north, separated from the mainland of Mary- land by Sinepuxent Bay. Prior to 1933, there was a single continuous barrier island, the original Fen- wick Island (referred to here as "ancestral Fewwick Island), which was breached in 1933 to form the two present-day islands. The outline in black shows the location of "ancestral" Fenwick Island in 1849. An- swer the following questions. What do you think breached "ancestral" Fenwick Island in 1933 to form the present-day Ocean City Inlet, which now separates As sateague Island from Fenwick Island? 3. Once the breach was created, coastal engineers decided to keep the passage open as a boat channel by stabilizing it on the north side (southern end of Fenwick Island) and the south side (seawall at the northern end of Assateague Island) with jetties. Jetties are "hard" en- gineering structures similar to groins. They are usually placed at harbor entrances in an attempt to keep them stable and prevent sedi- ment from the clogging the channel as was done for Newport Har- bor, California (Figure 13.26) a. Determine the direction of longshore flow for the coastal area 4. Rigure 13.26 Portion of New port Beach, California topographic map, showing entrance to Newport Bay and Harbor shielded shown in Figure 13.27. b. Are the barrier islands in Figure 13.27 transgressive or regressive by north and south thin black lines around the edges of Newport Bay and Balboa Island are groins, Aodalied fhorm Lisas 196s barrier islands? Provide evidence in support of your answer. ho minute Newport Broch quadiangie 152 Laboratory 13: The Coast:Processes and HazardsExplanation / Answer
1) a) the the density is on of the main factor which is responsible for the this kind of the chnages or the process take place the light color sand. the waves pararell to the coast line enable the flow of sand and make the light colors to occurs.
b) the sand dunes produce by the waves at the coastal region are responsible for the production of the high energy to this region.
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2) a) according to the given data it can be said that as the island have the overwash and inlet immitation and along with this it having the transitioning so it is transgressive barrier island.
b) the basis for the ans 2 a) is already descibed in that problem please check it.
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