Serpetti, N. and Heath, Michael and Rose, M. and Witte, U. (2012) High resolution mapping of sediment organic matter from acoustic reflectance data. Hydrobiologia, 680 (1). 265–284. ISSN 0018-8158Full text not available in this repository. (Request a copy from the Strathclyde author)
Spatial mapping of the marine environment is challenging when the properties concerned are difﬁcult to measure except by shore-based analysis of discrete samples of material, usually from sparsely distributed sites. This is the case for many seabed sediment properties. We developed an indirect approach to mapping the organic content of coastal sediments from hydro-acoustic reﬂectance data. The basis was that both organic matter and acoustic reﬂectance are related to sediment type and grain size composition. Hence there is a collateral relationship between organic matter content and reﬂectance properties which can be exploited to enable high resolution mapping. We surveyed an area of seabed off the east coast of Scotland using a vessel mounted single beam echosounder with RoxAnn signal processing. Organic carbon, nitrogen and phytoplankton pigment contents were then measured in material from grab and core samples collected at intervals over a year. Relationships between the organic components and hydroacoustic characteristics were derived by general additive models, and used to construct high resolution maps from the acoustic survey data. Our method is an advance on traditional interpolation techniques sparse spatial data, and represents a generic approach that could be applied to other properties.
|Keywords:||acoustic reflectance data , high resolution mapping, spatial mapping, marine systems, Probabilities. Mathematical statistics|
|Subjects:||Science > Mathematics > Probabilities. Mathematical statistics|
|Department:||Faculty of Science > Mathematics and Statistics|
|Depositing user:||Pure Administrator|
|Date Deposited:||06 Mar 2012 12:22|
|Last modified:||27 Apr 2016 16:21|