Antarctic Circumnavigation Expedition 2017: HOSM data product

Progress Code: completed Statement: Nans in the reconstructed surfaces indicate numerical instability. Files containing Nans should be disregarded. Purpose The assessment of metocean conditions in the Southern Oceans Reconstructed nonlinear surface from WAMOS (marine radar) data collected during the...

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Bibliographic Details
Other Authors: AADC (owner), AADC, DATA OFFICER (distributor), AADC, DATA OFFICER (custodian), ALBERELLO, ALBERTO (collaborator), ALBERELLO, ALBERTO (hasPrincipalInvestigator), ALBERELLO, ALBERTO (author), AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith), Alberello, A., Bennetts, L., Derkani, M.H. and Toffoli, A. (originator), Australian Antarctic Data Centre (publisher), Australian Antarctic Division (sponsor), BENNETTS, LUKE (collaborator), BENNETTS, LUKE (hasPrincipalInvestigator), BENNETTS, LUKE (author), DERKANI, MARZIEH HAJIARAB (collaborator), DERKANI, MARZIEH HAJIARAB (hasPrincipalInvestigator), DERKANI, MARZIEH HAJIARAB (author), TOFFOLI, ALESSANDRO (collaborator), TOFFOLI, ALESSANDRO (hasPrincipalInvestigator), TOFFOLI, ALESSANDRO (author)
Format: Dataset
Language:unknown
Published: Australian Ocean Data Network
Subjects:
oceans
EARTH SCIENCE &gt
OCEANS &gt
OCEAN WAVES
OCEAN WAVES &gt
WAVE SPECTRA
SEA STATE
WAVE HEIGHT
HOSM
NUMERICAL SIMULATIONS
NONLINEAR WAVES
Computer &gt
Computer
SHIPS
R/V AKADEMIK TRESHNIKOV
AMD/AU
AMD
CEOS
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
Antarc*
Antarctic
Southern Ocean
Online Access:https://researchdata.edu.au/antarctic-circumnavigation-expedition-hosm-product/2819982
Description
Summary:Progress Code: completed Statement: Nans in the reconstructed surfaces indicate numerical instability. Files containing Nans should be disregarded. Purpose The assessment of metocean conditions in the Southern Oceans Reconstructed nonlinear surface from WAMOS (marine radar) data collected during the 3rd leg of Antarctic Circumnavigation Expedition, from the end of January to the end of March 2017. WAMOS data (AAS_4434_ACE_WAMOS) are processed with the Higher Order Spectral Method (HOSM) to provide the nonlinear surface elevation and the corresponding spectrum of waves during ACE. A Montecarlo approach is adopted to reproduce the natural variability of the sea state and gain reliable statistics of the underlying nonlinear surface elevation. Details on the method can be found on Toffoli, Alessandro, et al. "Evolution of weakly nonlinear random directional waves: laboratory experiments and numerical simulations." Journal of Fluid Mechanics 664 (2010): 313-336. File structure: Folder name corresponds to the time stamp of the input spectrum (yyyyMMddhhmmss) from AAS_4434_ACE_WAMOS. Each folder contains: 1. The surface elevation for 250 random realisations at 10 instant in times from initialisation saved every 5 dominant wave periods apart (0,5,10,15,…,50 Tp). The ten digits name is structured as 0000NRRttt where NRR is the number of the random realisation (from 1 to 250) and ttt denotes the time index (from 0 to 10). 2. NEW_SPECTRUM.DAT the 2D spectrum (64x64) as a columnar vector of the initial spectrum read from the AAS_4434_ACE_WAMOS. 3. INPUT_SPECTRUM.DAT the 2D spectrum (256x256) as a columnar vector of the initial spectrum for the HOSM. 4. WAVENUMBERSX.DAT and WAVENUMBERSY.DAT the wavenumber in x and y respectively 5. PP_INFO.DAT contains the peak period (Tp) in seconds 6. RUN_INFO.DAT contains the resolution in x of the WAMOS spectrum (64), the resolution in y of the WAMOS spectrum (64), the delta x for the surface elevation in m, the delta y for the surface elevation in m. Subsequent parameters are ...

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