Inherent Optical Properties for Biogeochemical Dynamics in Fitzroy Estuary and Keppel Bay

Geoscience Australia Data provides measurements of inherent optical properties (IOPs) from a tropical macrotidal coastal system. The dataset includes spectral absorption, scattering, and backscattering coefficients, plus discrete measurements of phytoplankton, nonalgal particles, and colored dissolved organic matter absorption, collected during the dry season. Data was last updated on the platform in May 2026.

Use Cases

• Develop spatially and temporally adjusted remote sensing algorithms based on the measured variability in optical properties.
• Model biogeochemical dynamics in coastal systems based on measurements of phytoplankton pigments and suspended matter concentrations.
• Analyze the impact of semidiurnal tides on water constituent distribution based on the described spatial and temporal sampling.
• Study the relationship between water turbidity and specific inherent optical properties (SIOPs) based on the reported orders-of-magnitude changes in particle scattering and absorption.

Strengths

• Includes continuous and discrete measurements of multiple inherent optical properties, such as spectral absorption, scattering, and backscattering.
• Captures variability on short spatial and temporal scales, including the effect of semidiurnal tides.
• Documents large observed variability, with particle scattering decreasing by 2 orders of magnitude and nonalgal particle absorption by 3 orders of magnitude from estuary to bay.

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 and temporal bias inherent to sampling in the Fitzroy Estuary and Keppel Bay during the dry season.

Provenance

Source

Geoscience Australia Data

Collection Method

Sampling of biogeochemical and inherent optical properties in the near-surface layer, spatially and across tidal phases.

Time Range

Dry season (specific years unknown).

Freshness

Last updated 2026-05-14 09:11:46.658653; freshness should be verified.

Geography

Fitzroy Estuary and Keppel Bay, tropical Australia, a shallow coastal environment (< 30 m depth).