Lord Howe Island shelf in NSW was surveyed by Geoscience Australia in 2008. The survey mapped seabed bathymetry and characterized benthic environments using sediment sampling, rock coring, underwater video, and current measurements. The lh_back_8m grid is a processed backscatter product covering 1034 sq km, derived from EM300 data.
Use Cases
- Analyze seabed hardness and texture based on backscatter intensity values.
- Map benthic habitat distribution by correlating backscatter with video observations.
- Study sediment thickness and shelf stratigraphy by integrating backscatter with subbottom profile data.
- Model oceanographic processes using backscatter data alongside tide and current measurements.
Strengths
- Grid covers a defined area of 1034 sq km.
- Data integrates multiple survey methods including sampling, coring, and video.
- Backscatter data is processed using a specific method (CMST-GA MB Process).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to the specific survey area.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Data acquired using the National Facility Research Vessel Southern Surveyor during survey SS062008.
- Time Range
- Survey conducted in 2008.
- Freshness
- Last updated 2026-05-05 05:10:12.151917; freshness should be verified.
- Geography
- Lord Howe Island shelf, NSW, Australia.