Overview of Midfrequency Reverberation Data Acquired During the Target and Reverberation Experiment 2013
| Autor: | Jie Yang, Dajun Tang, John R. Preston, Brian T. Hefner, Kevin L. Williams |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Reverberation
010504 meteorology & atmospheric sciences 010505 oceanography Mechanical Engineering Attenuation Sea trial Ocean Engineering 01 natural sciences Sonar Surface wave Chirp Clutter Bathymetry Electrical and Electronic Engineering Geology 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | IEEE Journal of Oceanic Engineering. 43:563-585 |
| ISSN: | 2373-7786 0364-9059 |
| DOI: | 10.1109/joe.2018.2802578 |
| Popis: | The Target and Reverberation EXperiment 2013 (TREX13) included a comprehensive reverberation field project in the frequency band of 2–10 kHz, and was carried out off the coast of Panama City, FL, USA, from April 21 to May 17, 2013. A spatially fixed transmit and receive acoustic system was used to measure reverberation over time under diverse environmental conditions, allowing study of reverberation level (RL) dependence on bottom composition, sea surface conditions, and water column properties. Extensive in situ measurements, including a multibeam bathymetric survey, chirp sonar subbottom profiling, gravity/diver cores, sediment sound speed and attenuation, interface roughness, wind-generated sea surface waves, and water column properties, were made to support studies of environmental effects on RL. Beamformed RL data are categorized to facilitate studies emphasizing physical mechanisms of 1) bottom reverberation; 2) sea surface impact; and 3) biological impact. This paper is an overview of RL over the entire sea trial, intending to summarize major observations and provide both a road map and suitable data sets for follow-up efforts on model/data comparisons. Emphasis is placed on the dependence of RL on local geoacoustic properties and sea surface conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|