Sediment classification in a Brazilian reservoir: Pros and cons of parametric low frequencies
| Autor: | Klajdi Sotiri, Stephan Hilgert, Stephan Fuchs |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Advances in Oceanography and Limnology, Vol 10, Iss 1 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1947-5721 1947-573X |
| DOI: | 10.4081/aiol.2019.7953 |
| Popis: | Sediment is the main factor that limits the reservoir lifetime. Therefore, sediment classification is an essential tool for planning and operating reservoir management measures. There has been important development in the hydroacoustic classification of lakebed, especially with linear systems. The main restrictions while using linear hydroacoustic systems for lakebed classification are the shallow penetration in high-frequency applications or the low vertical and horizontal resolution when using low frequencies. With the new developments in the area of echo sounders, parametric systems can achieve high penetration while preserving the high vertical and lateral resolution. To investigate the performance of parametric systems, a new lakebed classification approach was implemented by using a SES2000 Compact. The area studied was the Passauna reservoir in Parana State, Brazil. We used the first echo division method for processing the acoustic data combined with sediment core and grab sampling. The two physical parameters investigated, were the share of the finest fraction ( |
| Databáze: | Directory of Open Access Journals |
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