| contributor author | Amador, André;Jaramillo, Sergio;Pawlak, Geno | |
| date accessioned | 2018-01-03T10:59:48Z | |
| date available | 2018-01-03T10:59:48Z | |
| date copyright | 7/20/2017 12:00:00 AM | |
| date issued | 2017 | |
| identifier other | jtech-d-16-0182.1.pdf | |
| identifier uri | http://138.201.223.254:8080/yetl1/handle/yetl/4245816 | |
| description abstract | AbstractA theoretical model is developed to describe how autonomous underwater vehicle (AUV)-based current measurements are influenced by a surface wave field. The model quantifies a quasi-Lagrangian, wave-induced velocity bias as a function of the local wave conditions, and the vehicle?s depth and velocity using a first-order expansion of the linear wave solution. The theoretical bias is verified via field experiments carried out off the coast of Oahu, Hawaii. Spatially averaged along- and cross-track AUV velocity measurements are calculated over one effective wavelength and compared with time-averaged, fixed ADCP measurements in a range of wave and current conditions. The wave-induced bias is calculated using wave directional spectra derived from fixed ADCP data. Ensemble-averaged velocity differences confirm the presence of the wave-induced bias O(1?5) cm s?1 and reveal an additional bias in the direction of the vehicle motion O(1) cm s?1. The analysis considers velocity measurements made using a Remote Environmental Monitoring Units (REMUS) 100 AUV, but the content applies to any small AUV (vehicle size wavelength) immersed in a wave field. | |
| publisher | American Meteorological Society | |
| type | Journal Paper | |
| journal volume | 34 | |
| journal issue | 9 | |
| journal title | Journal of Atmospheric and Oceanic Technology | |
| identifier doi | 10.1175/JTECH-D-16-0182.1 | |
| journal fristpage | 2029 | |
| journal lastpage | 2042 | |
| tree | Journal of Atmospheric and Oceanic Technology:;2017:;volume( 034 ):;issue: 009 | |
| contenttype | Fulltext | |
