Seabed sub-bottom sediment classification using parametric sub-bottom profiler

Bottom Stationed Ocean Profiler

The long term project goal is development and utilization of a bottom stationed autonomous ocean profiler for enhanced physical chemical and biological measurements in the coastal ocean.. The system is designed to allow bi-directional satellite communcation, user programmability, and data storage and transmission in near real-time. It is envisioned that deployments of large numbers of BSOP syst...

A High-Frequency, Narrow-Beam Sub Bottom Profiler for Archaeological Applications

Shipwrecks in deep water are often found by their surface expressions, such as exposed ceramic containers. Fully investigating or excavating those sites, however, requires understanding what is buried beneath, including organic materials and the remains of ship structure. This paper lays out the archaeological and technical justification for a high-frequency, narrow-beam sub-bottom profiler. It...

Effects of using inclined parametric echosounding on sub-bottom acoustic imaging and advances in buried object detection

This study reports an adaptation of a parametric echosounder system using 15 kHz as secondary frequency to investigate the angular response of sub-bottom backscatter strength of layered mud, providing a new method for enhanced acoustic detection of buried targets. Adaptions to achieve both vertical (0°) and non-vertical inclination (1– 15°, 30°, 45° and 60°) comprise mechanical tilting of the a...

Sentiment Classification Using Word Sub-sequences and Dependency Sub-trees

Document sentiment classification is a task to classify a document according to the positive or negative polarity of its opinion (favorable or unfavorable). We propose using syntactic relations between words in sentences for document sentiment classification. Specifically, we use text mining techniques to extract frequent word sub-sequences and dependency sub-trees from sentences in a document ...

Sub-bottom and GPR surveys over two puzzling lakes within the Ivrea Morainic Amphitheatre (NW Italy)