title: Characterization of bottom sediments in lakes using hydroacoustic methods and comparison with laboratory measurements.
abstract: The acoustical properties of bottom sediments in two lakes were shown to be strongly correlated with clay content, organic C and total N concentrations, and other important sediment properties. The fractal dimension of the bottom echo was more strongly correlated with sediment physical and chemical properties than energy-based measures. The fractal dimension was also related to rates of PO4-P and NH4-N release from intact sediment cores and sediment oxygen demand. Measurements made at 430-kHz were more sensitive to differences in sediment properties than 201- or 38-kHz. Hydroacoustic measurements allow rapid assessment of properties important in lake restoration and water resource management.
authors: Department of Environmental Sciences, University of California, Riverside, CA 92521, USA. michael.anderson@ucr.edu
authors: Michael A
authors: MA
authors: Anderson
authors: Porfirio
authors: P
authors: Pacheco
mesh_terms: D000641:Ammonia / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D005618:Fresh Water / Q000737:chemistry*; D019015:Geologic Sediments / Q000737:chemistry*; D010710:Phosphates / Q000032:analysis; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D010710:Phosphates; D014874:Water Pollutants, Chemical; D014867:Water; D000641:Ammonia