TemperateReefBase Geonetwork Catalogue
Wave acquisition stereo-camera system measurements (WASS) from a voyage of the S.A. Agulhas II, July 2017
Between 07:00 and 08:00 UTC on the 4th July 2017, the South African icebreaker S.A. Agulhas II entered the Antarctic MIZ (62 South and 30 East) during an explosive polar cyclone.
A system of two GigE monochrome industrial CMOS cameras with a 2/3 inch sensor was installed on the icebreaker. The cameras provide a field of view of the ocean surface around the port side of the ship. Images were recorded with resolution 2448x2048 pixels and a sampling rate 2 Hz during daylight on the 4th July 2017.
The wave acquisition stereo-camera system (WASS; https://www.dais.unive.it/wass/) is used to reconstruct the water surface elevation.
Reconstructed surface elevations are given as .nc files (6).
The file name is “wass__20170704_hhmm.nc” where hh and mm denote the hour and minute in UTC of the start of each acquisition.
X_grid and Y_grid are the grid in x and y direction, resolution 1000mm or 1m.
Fps is the acquisition frequency, resolution 2Hz.
Time is a dummy variable, time is reconstructed from start time and fps.
Z is the surface elevation in space and time, in mm. Missing values are "Nan".
Other variables are WASS control variables.
Further details on the measurements and use of the data can be found at Alberello et al. “An extreme wave field in the winter Antarctic marginal ice zone during an explosive polar cyclone”.
Simple
Identification info
- Alternate title
- Wave acquisition stereo-camera system measurements (WASS) from a voyage of the S.A. Agulhas II, July 2017
- Date (Publication)
- 2021-03-16
- Edition
- 1
- Citation identifier
-
Dataset DOI
- Title
- Information and documentation - Digital object identifier system
- Date (Publication)
- 2012-04-23
- Citation identifier
- ISO 26324:2012
- Citation identifier
- doi:10.26179/q9bd-5f74
Originator
Publisher
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Collaborator
Collaborator
Collaborator
Collaborator
Collaborator
- Name
- CAASM Metadata
- Purpose
- Despite major advances over the past decade in measuring wave propagation through the MIZ, there is a lack of measurements in the harsh winter Antarctic MIZ and for the extreme wave conditions in the winter Southern Ocean, where the mean significant wave height in many sectors reaches 5 m and the 90th percentiles (extremes) are up to 7 m. Stereo-imaging techniques have emerged as a tool for in-situ wave measurements in the MIZ. The images are used to reconstruct the sea surface elevation in time and space, thus enabling analysis of wave dynamics in both two-dimensional physical space and the frequency-direction spectral domain, including statistical analysis of the wave field. The measurements have implications for the treatment of wave–ice interactions in wave and sea ice forecasting models.
- Status
- Completed
Custodian
- Topic category
-
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2017-07-04 2017-07-04
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > OCEANS > OCEAN WAVES
- EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE SPECTRA
- EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT
- Keywords
-
- WASS
- SA AGULHAS II
- WAVE ACQUISITION STEREO-CAMERA SYSTEM
- NASA/GCMD Earth Science Keywords
-
- CAMERAS
- SWAVES > STEREO WAVES
- NASA/GCMD Earth Science Keywords
-
- SHIPS
- NASA/GCMD Earth Science Keywords
-
- AMD
- AMD/AU
- CEOS
- NASA/GCMD Earth Science Keywords
-
- OCEAN > SOUTHERN OCEAN
- GEOGRAPHIC REGION > POLAR
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- These data are publicly available for download from the provided URL.
Resource constraints
- File type
- Portable Network Graphic
- Title
- Attribution 4.0 International (CC BY 4.0)
- Website
-
https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license
- Use constraints
- licence
- Other constraints
- This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4434_AGULHAS_WASS_2017 when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- Free
- Planned available datetime
- 2021-03-16T00:00:00
- Units of distribution
- GB
- Transfer size
- 1.48
- Distribution format
-
- Net CDF
- OnLine resource
-
GET DATA > DIRECT DOWNLOAD
Download the dataset.
- OnLine resource
-
PROJECT HOME PAGE
Public information for AAS project AAS_4434
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset.
- Maintenance and update frequency
- As needed
- Maintenance note
- 2021-03-16 - record created by Alberto Alberello.
Metadata
- Metadata identifier
- string/AAS_4434_AGULHAS_WASS_2017
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 4b53007c-2460-4ec0-9aa6-8d3051516a25
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2021-03-16T14:52:35
Identifier
- Description
- metadata.extraction_date
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 8.6
- Metadata linkage
-
http://data.aad.gov.au/metadata/records/AAS_4434_AGULHAS_WASS_2017
Point of truth for the metadata record
- Date info (Creation)
- 2021-03-15T00:00:00
- Date info (Last Update)
- 2021-03-16
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
Provided by
