Discussion of the Paper “Hydrates Offshore Brazil”
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The paper “Hydrates Offshore Brazil” by Rogerio L. Fontana and Alexandre Mussumeci presents some important information that strongly indicates the presence of gas hydrates on the southern Brazilian continental margin. However, the acoustic compressional wave velocity structure reported for the Brazilian margin sediments is highly unusual and quite puzzling. We will discuss a possible explanation related to the presence of gas hydrate and free gas in the sediments.
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