Example Of Ground Penetrating Radar

927 WordsNov 21, 20174 Pages
Ground penetrating radar (GPR) can be used for numerous amount of applications. It is not only used for construction, but it can be use for archaeologists, marine scientists, geologic profiling and so forth. The GPR will send minute pulses of energy into the substance, record the time and strength for the return of the reflected signal. The control unit will send electrical pulses to the antenna which will then amplify this pulse and transmit it into the substance at a certain frequency. Determining what substance, the pulse hits it will have a strong or weak reflection. This information will come back into the control unit (in this case the GSSI SIR 20 was used which has a laptop preloaded with software to help process and interpret…show more content…
Dunes are formed by wind moving the dry sand that is well sorted and very fine to fine grained sand. The back-barrier region of the barrier island consists of the marsh, tidal flats, overwash fan and a lagoon. The overwash fan forms when storm surges through the dune and will spread over the marsh. The marshes and tidal flats are very important ecological systems and can be sefined has vegetated muddy flats. There are three different types of barrier islands. Wave dominated barriers are long and narrow and have low islands that have few tital inless and small ebb tide deltas. The overwash fan and windblown sand are commonly found in the backshore. Mixed energy barrier islands are the opposite of wave dominated barrier islands. These are short, fat, high islands, many large inlets with large ebb tide deltas. These islands also have a drumstick shape. In the Bennet et al. (2009) paper ontained nine GPR transverses at three different sites to obtain the evolution of Chesil Beach. The three different sites were Abbotsbury, Langton Herring, and Ferry Bridge. Through each of these GPR transveres, there is a lot of consistency to be seen of the internal structure of Chesil Beach. It was noted that the first phase had a landward transgression of small sand and gravel beach which crept upon the beach which lead to the accumulation of freshwater peat. This occurred between 7-5 k yr BP. The second phase involved the ‘“bulking out” of the beach’ when the sea
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