Australian Continental Shelf Bed Shear Stress Exposure Models (1997-2005)

Output from numerical models computes combined-flow bed shear stress across the entire Australian continental shelf for an 8-year period from March 1997 to February 2005. The Australian Ocean Data Network produced this data to quantify seabed exposure to oceanographic processes like waves, tides, and currents. It presents three classification methods for assessing the magnitude and frequency of stress events.

Use Cases

• Classify seabed exposure regions using the spectral regionalization method based on stress frequency data.
• Analyze the relationship between regionalization maps and physical sediment properties like mean grain size and bulk carbonate content.
• Assess the balance between the work done on the seabed and the frequency of stress events using the provided methodology.
• Distinguish regions dominated by high-frequency (diurnal/semi-diurnal) versus low-frequency (synoptic/annual) stress events.
• Model sediment mobilization potential by correlating computed bed shear stress magnitudes with water depth data.

Strengths

• Covers the entire Australian continental shelf spatially.
• Provides an 8-year temporal record from March 1997 to February 2005.
• Offers three distinct methodological approaches for classifying exposure.

Limitations

• Data is temporally stale, ending in 2005, which may not reflect current oceanographic conditions.
• Specific row counts, column details, and data resolution are unknown.
• Derived from model outputs, not direct in-situ measurements, introducing potential model bias.

Provenance

Source

Australian Ocean Data Network

Collection Method

Computed from outputs of a suite of numerical models predicting oceanic processes.

Time Range

March 1997 - February 2005

Freshness

null

Geography

Australian continental shelf